{"id":1651,"date":"2018-10-25T22:22:59","date_gmt":"2018-10-25T14:22:59","guid":{"rendered":"http:\/\/www.ponybai.com\/?p=1651"},"modified":"2018-10-25T22:22:59","modified_gmt":"2018-10-25T14:22:59","slug":"%e7%94%bb%e5%b8%83%e5%bc%80%e5%8f%91%ef%bc%884%ef%bc%89canvas-sdk","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=1651","title":{"rendered":"\u753b\u5e03\u5f00\u53d1\uff084\uff09Canvas SDK"},"content":{"rendered":"\n\t\t\t\t\n<h2 class=\"wp-block-heading\">\u5b66\u4e60\u76ee\u6807<\/h2>\n\n\n\n<p>\u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\u4e86\u89e3\u5230\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5f15\u7528Canvas SDK<br\/><\/li><li>\u9a8c\u8bc1<br\/><\/li><li>\u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u83b7\u53d6\u4e0a\u4e0b\u6587<br\/><\/li><li>\u8de8\u57dfXHR<br\/><\/li><li>\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f<br\/><\/li><li>\u5b9e\u65bdCanvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6<br\/><\/li><li>\u5728Canvas\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528Streaming API<br\/><\/li><li>\u5728Canvas\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u8c03\u8bd5<br\/><\/li><li>\u5728Canvas App\u4e2d\u4f7f\u7528\u6807\u7b7e<\/li><\/ul>\n\n\n\n<p>Canvas\u662f\u4e00\u7ec4\u5de5\u5177\uff0c\u4f7f\u60a8\u53ef\u4ee5\u5728Salesforce\u4e2d\u96c6\u6210\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u3002 \u6b64\u6846\u67b6\u5305\u542b\u4e00\u4e2aSDK\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5SDK\u5bf9\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u5e76\u4eceSalesforce\u68c0\u7d22\u6570\u636e\u3002 Canvas SDK\u548c\u4ee3\u7801\u793a\u4f8b\u53ef\u5728GitHub\u4e0a\u83b7\u5f97\uff0c\u7f51\u5740\u4e3ahttps:\/\/github.com\/forcedotcom\/salesforcecanvasframeworksdk\u3002<\/p>\n\n\n\n<p>Canvas SDK\u5df2\u7ecf\u8fc7\u7248\u672c\u5316\uff0c\u5e76\u4e14\u4e0e\u6bcf\u4e2a\u7248\u672c\u4e2d\u7684API\u7248\u672c\u76f8\u5339\u914d\u3002 \u76ee\u524d\u7684\u7248\u672c\u662f44.0\u3002<br\/>\n\u60a8\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528version\u65b9\u6cd5\u627e\u5230\u60a8\u62e5\u6709\u7684SDK\u7248\u672c\u3002 \u53ef\u4ee5\u5728\u4ee5\u4e0b\u4f4d\u7f6e\u627e\u5230\u6b64\u5f00\u53d1\u4eba\u5458\u6307\u5357\u7684\u65e9\u671f\u7248\u672c<br\/>\nhttps:\/\/developer.salesforce.com\/page\/Earlier_Reference_Documentation\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5f15\u7528Canvas SDK<br\/><\/h2>\n\n\n\n<p>Canvas SDK\u53ef\u4ee5\u5728GitHub\u4e0a\u4f7f\u7528\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e24\u4e2a\u9009\u9879\u4ece\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5f15\u7528\u5b83\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5728\u60a8\u81ea\u5df1\u7684Web\u670d\u52a1\u5668\u4e0a\u6258\u7ba1SDK\u5e76\u5728\u90a3\u91cc\u8bbf\u95ee\u5b83<br\/><\/li><li>\u8bbf\u95eeSalesforce\u670d\u52a1\u5668\u4e0a\u6258\u7ba1\u7684SDK<\/li><\/ul>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5728\u81ea\u5df1\u7684Web\u670d\u52a1\u5668\u4e0a\u6258\u7ba1SDK\uff0c\u90a3\u4e48\u8fd9\u5c31\u662finclude\u8bed\u53e5\u7684\u6837\u5b50\uff1a<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u5f15\u7528\u6258\u7ba1SDK\u65f6include\u8bed\u53e5\u7684\u5916\u89c2\uff1a<\/p>\n\n\n\n<p>\u5982\u679c\u8981\u5728Web\u5e94\u7528\u7a0b\u5e8f\u6216Visualforce\u9875\u9762\u4e2d\u5305\u542b\u5176\u4e2d\u4e00\u4e2aSDK\u6587\u4ef6\uff0c\u5219\u5728Salesforce\u670d\u52a1\u5668\u4e0a\u5f15\u7528SDK\u7684\u529f\u80fd\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><\/tr><\/tbody><\/table>\n\n\n\n<h2 class=\"wp-block-heading\">Authentication<\/h2>\n\n\n\n<p>\u521b\u5efa\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8eab\u4efd\u9a8c\u8bc1\u65b9\u6cd5\u4e4b\u4e00\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u7b7e\u540d\u8bf7\u6c42 &#8211; \u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u9ed8\u8ba4\u8eab\u4efd\u9a8c\u8bc1\u65b9\u6cd5\u3002\u7b7e\u540d\u8bf7\u6c42\u6388\u6743\u6d41\u7a0b\u53d6\u51b3\u4e8e\u60a8\u662f\u5426\u914d\u7f6e\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u4ee5\u4fbf\u7ba1\u7406\u5458\u4e3a\u7528\u6237\u63d0\u4f9b\u5bf9\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u6216\u8005\u7528\u6237\u662f\u5426\u53ef\u4ee5\u81ea\u884c\u6388\u6743\u3002\u5982\u679c\u7ba1\u7406\u5458\u5141\u8bb8\u7528\u6237\u8bbf\u95ee\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u6216\u8005\u7528\u6237\u901a\u8fc7\u6279\u51c6\/\u62d2\u7eddOAuth\u6d41\u7a0b\u6279\u51c6\u4e86\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u5219\u4f1a\u5411\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u5305\u542b\u4f7f\u7528\u8005\u5bc6\u94a5\uff0c\u8bbf\u95ee\u4ee4\u724c\u548c\u5176\u4ed6\u4e0a\u4e0b\u6587\u4fe1\u606f\u7684\u7b7e\u540d\u8bf7\u6c42\u3002 \u3002<br\/><\/li><li>OAuth 2.0-Canvas\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u4f7f\u7528OAuth 2.0\u534f\u8bae\u6765\u9a8c\u8bc1\u548c\u83b7\u53d6\u8bbf\u95ee\u4ee4\u724c\u3002\u6709\u5173OAuth\u548cLightning\u5e73\u53f0\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u5728Salesforce\u4e2d\u6df1\u5165\u6316\u6398OAuth 2.0\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b7e\u540d\u8bf7\u6c42\u8eab\u4efd\u9a8c\u8bc1<\/h3>\n\n\n\n<p>This is the default authorization method for canvas apps. The signed request authorization flow varies depending on whether the canvas app\u2019s Permitted Users field is set to &#8220;Admin approved users are pre-authorized&#8221; or &#8220;All users may self-authorize.&#8221;<br\/><\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td><strong>Permitted Users Value<\/strong><\/td><td><strong>Canvas App Accessibility<\/strong><\/td><td><strong>\u5f53\u7528\u6237\u9700\u8981\u6279\u51c6\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u65f6<\/strong><\/td><td><strong>POST or GET Behavior<\/strong><\/td><\/tr><tr><td>\u7ba1\u7406\u5458\u6279\u51c6\u7684\u7528\u6237\u5df2\u83b7\u5f97\u9884\u6388\u6743<\/td><td>\u4e00\u65e6\u7ba1\u7406\u5458\u5728\u7ec4\u7ec7\u4e2d\u5b89\u88c5\u8be5\u5e94\u7528\u7a0b\u5e8f\u5e76\u914d\u7f6e\u54ea\u4e9b\u7528\u6237\u53ef\u4ee5\u770b\u5230\u8be5\u5e94\u7528\u7a0b\u5e8f\uff0c\u8be5\u5e94\u7528\u7a0b\u5e8f\u5c31\u53ef\u4f9b\u7528\u6237\u8bbf\u95ee\u3002\u7528\u6237\u65e0\u9700\u6279\u51c6\u6216\u62d2\u7edd\u8bbf\u95ee\u3002<\/td><td>Never<\/td><td>Salesforce\u5bf9\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6267\u884cPOST\uff0c\u5176\u4e2d\u5305\u542b\u7b7e\u540d\u8bf7\u6c42\u6b63\u6587\u4e2d\u5305\u542b\u7684\u6240\u6709\u6388\u6743\u4fe1\u606f\uff0c\u5305\u62ec\u5237\u65b0\u4ee4\u724c\u3002<\/td><\/tr><tr><td>\u6240\u6709\u7528\u6237\u90fd\u53ef\u4ee5\u81ea\u6211\u6388\u6743<\/td><td>\u6240\u6709\u7528\u6237\u90fd\u53ef\u4ee5\u8bbf\u95ee\u8be5\u5e94\u7528\uff0c\u4f46\u4f1a\u63d0\u793a\u7528\u6237\u6279\u51c6\u6216\u62d2\u7edd\u8bbf\u95ee\u8be5\u5e94\u7528\u3002<\/td><td><del>\u2022\u00a0<\/del>\u7528\u6237\u7b2c\u4e00\u6b21\u6253\u5f00\u5e94\u7528\u7a0b\u5e8f<br\/>\u2022 \u5982\u679c\u7ba1\u7406\u5458\u64a4\u6d88\u4e86\u8bbf\u95ee\u4ee4\u724c<br\/>\u2022 \u5982\u679c\u7ba1\u7406\u5458\u4e3a\u4ee4\u724c\u8bbe\u7f6e\u4e86\u65f6\u95f4\u9650\u5236\u5e76\u4e14\u8d85\u51fa\u4e86\u65f6\u95f4\u9650\u5236<\/td><td>\u5982\u679c\u7528\u6237\u4e4b\u524d\u5df2\u6279\u51c6\u8be5\u5e94\u7528\u7a0b\u5e8f\u5e76\u4e14\u8bbf\u95ee\u6743\u9650\u5c1a\u672a\u88ab\u64a4\u9500\u6216\u8fc7\u671f\uff0c\u5219Salesforce\u4f1a\u4f7f\u7528\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u6709\u6548\u5185\u5bb9\u5bf9\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6267\u884cPOST\u3002<br\/>\u5982\u679c\u7528\u6237\u5c1a\u672a\u6279\u51c6\u8be5\u5e94\u7528\u7a0b\u5e8f\uff0c\u6216\u8005\u8be5\u8bbf\u95ee\u6743\u9650\u5df2\u88ab\u64a4\u9500\u6216\u8fc7\u671f\uff0c\u5219Salesforce\u4f1a\u5bf9\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u6267\u884cGET\u3002\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5fc5\u987b\u901a\u8fc7\u63a5\u53d7\u8c03\u7528\u5e76\u67e5\u627eURL\u53c2\u6570\u6765\u5904\u7406GET<br\/>_sfdc_canvas_authvalue\u3002\u5982\u679c\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6536\u5230\u6b64\u53c2\u6570\u503c\uff0c\u5219\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5e94\u542f\u52a8\u6279\u51c6\u6216\u62d2\u7eddOAuth\u6d41\u7a0b\u3002<br\/>_sfdc_canvas_authvalue = user_approval_required<br\/>\u542f\u52a8OAuth\u6d41\u5e76\u4e14\u7528\u6237\u6279\u51c6\u5e94\u7528\u7a0b\u5e8f\u540e\uff0c\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5e94\u4f7f\u7528\u53c2\u6570true\u8c03\u7528repost\uff08\uff09\u65b9\u6cd5\u4ee5\u68c0\u7d22\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002<\/td><\/tr><\/tbody><\/table>\n\n\n\n<p>\u7b7e\u540d\u7684\u8bf7\u6c42\u4fe1\u606f\u53ef\u4ee5\u4f7f\u7528\u5ba2\u6237\u7aef\u5bc6\u94a5\u8fdb\u884c\u9a8c\u8bc1\uff0c\u5e76\u7528\u4e8e\u81ea\u5b9a\u4e49\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u968f\u540e\u8c03\u7528Salesforce\u3002<\/p>\n\n\n\n<p>\u7b7e\u540d\u8bf7\u6c42\u662f\u4ee5\u4e0b\u8fde\u63a5\u7684\u5143\u7d20\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4f7f\u7528HMAC SHA-256\u7b97\u6cd5\u52a0\u5bc6\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u8005\u5bc6\u94a5<br\/><\/li><li>A period \uff08\u201d\u3002\u201d\uff09<br\/><\/li><li>Base64\u4e2d\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u548c\u6388\u6743\u4ee4\u724cJSON<\/li><\/ul>\n\n\n\n<p>\u7b7e\u540d\u7684\u8bf7\u6c42\u770b\u8d77\u6765\u4e0e\u6b64\u7c7b\u4f3c\uff0c\u4f46\u4f1a\u66f4\u957f\uff1a<\/p>\n\n\n\n<p>9Rpl6rE7R2bSNjoSfYdERk8nffmgtKQNhr5U\/5eSJPI=.eyJjb250ZXh0Ijp7InVzZXIiOnsibGFuZ3V&#8230;. \u7b7e\u540d\u8bf7\u6c42\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Salesforce\u5728\u8c03\u7528\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u65f6\u6267\u884cHTTP POST\u6216GET\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u201c\u5141\u8bb8\u7684\u7528\u6237\u201d\u503c\u4ee5\u53ca\u662f\u5426\u8fd4\u56de\u5237\u65b0\u4ee4\u724c\u3002<br\/><\/li><li>\u9700\u8981\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u6765\u9a8c\u8bc1\u548c\u89e3\u7801\u8bf7\u6c42\u3002<br\/><\/li><li>\u60a8\u53ef\u4ee5\u5728\u8c03\u7528\u5e94\u7528\u7a0b\u5e8f\u540e\uff0c\u4f7f\u7528SDK\u6309\u9700\u8bf7\u6c42\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Canvas App\u7528\u6237\u6d41\u7a0b\u7b7e\u540d\u8bf7\u6c42<\/h4>\n\n\n\n<p>\u6b64\u56fe\u663e\u793a\u4e86\u4f7f\u7528\u7b7e\u540d\u8bf7\u6c42\u8eab\u4efd\u9a8c\u8bc1\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u7528\u6237\u6d41\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img fetchpriority=\"high\" decoding=\"async\" width=\"555\" height=\"675\" src=\"http:\/\/121.37.188.161\/wp-content\/uploads\/2018\/10\/image9.jpeg\" alt=\"\" class=\"wp-image-1652\" srcset=\"http:\/\/www.ponybai.com\/wp-content\/uploads\/2018\/10\/image9.jpeg 555w, http:\/\/www.ponybai.com\/wp-content\/uploads\/2018\/10\/image9-247x300.jpeg 247w\" sizes=\"(max-width: 555px) 100vw, 555px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u9a8c\u8bc1\u548c\u89e3\u7801\u7b7e\u540d\u8bf7\u6c42<\/h4>\n\n\n\n<p>\u4f7f\u7528\u7b7e\u540d\u8bf7\u6c42\u65f6\uff0cSalesforce\u4f1a\u5c06\u7528\u6237\u4e0a\u4e0b\u6587\u548c\u8eab\u4efd\u9a8c\u8bc1\u4fe1\u606f\u4f20\u9012\u5230\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u3002\u8981\u786e\u4fdd\u7b7e\u540d\u7684\u8bf7\u6c42\u6709\u6548\uff0c\u60a8\u5fc5\u987b\u4f7f\u7528\u7279\u5b9a\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u8005\u5bc6\u94a5\u9a8c\u8bc1\u7b7e\u540d\u7684\u8bf7\u6c42\u662f\u5426\u5df2\u7b7e\u540d\u3002\u5982\u679c\u4f7f\u7528\u4e86\u6b63\u786e\u7684\u6d88\u8d39\u8005\u79d8\u5bc6\uff0c\u90a3\u4e48\u60a8\u53ef\u4ee5\u4fe1\u4efb\u4e0a\u4e0b\u6587;\u5426\u5219\uff0c\u60a8\u53ef\u4ee5\u5047\u8bbe\u8be5\u8bf7\u6c42\u4e0d\u662f\u7531Salesforce\u53d1\u8d77\u7684\u3002\u8981\u9a8c\u8bc1\u548c\u89e3\u7801\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\uff0c\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u5e94\uff1a<\/p>\n\n\n\n<p>1.\u63a5\u6536\u5305\u542bSalesforce\u521d\u59cb\u7b7e\u540d\u8bf7\u6c42\u7684POST\u6d88\u606f\u3002<br\/>2.\u5728\u7b2c\u4e00\u4e2a\u671f\u95f4\u62c6\u5206\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002\u7ed3\u679c\u662f\u4e24\u4e2a\u5b57\u7b26\u4e32\uff1a\u4f7f\u7528\u4f7f\u7528\u8005\u673a\u5bc6\u7b7e\u540d\u7684\u6563\u5217\u7684Based64\u4e0a\u4e0b\u6587\u548cBase64\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u672c\u8eab\u3002<br\/>3.\u4f7f\u7528HMAC SHA-256\u7b97\u6cd5\u5bf9Base64\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u8fdb\u884c\u54c8\u5e0c\u5904\u7406\uff0c\u5e76\u4f7f\u7528\u60a8\u7684\u4f7f\u7528\u8005\u5bc6\u94a5\u5bf9\u5176\u8fdb\u884c\u7b7e\u540d\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u63a5\u6536\u5305\u542bSalesforce\u521d\u59cb\u7b7e\u540d\u8bf7\u6c42\u7684POST\u6d88\u606f\u3002<br\/><\/li><li>\u5728\u7b2c\u4e00\u4e2a\u671f\u95f4\u62c6\u5206\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002\u7ed3\u679c\u662f\u4e24\u4e2a\u5b57\u7b26\u4e32\uff1a\u4f7f\u7528\u4f7f\u7528\u8005\u673a\u5bc6\u7b7e\u540d\u7684\u6563\u5217\u7684Based64\u4e0a\u4e0b\u6587\u548cBase64\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u672c\u8eab\u3002<br\/><\/li><li>\u4f7f\u7528HMAC SHA-256\u7b97\u6cd5\u5bf9Base64\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u8fdb\u884c\u54c8\u5e0c\u5904\u7406\uff0c\u5e76\u4f7f\u7528\u60a8\u7684\u4f7f\u7528\u8005\u5bc6\u94a5\u5bf9\u5176\u8fdb\u884c\u7b7e\u540d\u3002<\/li><li>Base64\u7f16\u7801\u5728\u4e0a\u4e00\u6b65\u4e2d\u521b\u5efa\u7684\u5b57\u7b26\u4e32\u3002<\/li><li>\u5c06Base64\u7f16\u7801\u7684\u5b57\u7b26\u4e32\u4e0e\u4f7f\u7528\u60a8\u5728\u6b65\u9aa42\u4e2d\u6536\u5230\u7684\u4f7f\u7528\u8005\u5bc6\u94a5\u7b7e\u540d\u7684\u6563\u5217Base64\u4e0a\u4e0b\u6587\u8fdb\u884c\u6bd4\u8f83\u3002<\/li><\/ol>\n\n\n\n<p>\u5982\u679c\u8fd9\u4e24\u4e2a\u503c\u76f8\u540c\uff0c\u90a3\u4e48\u60a8\u5c31\u77e5\u9053\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u662f\u4f7f\u7528\u60a8\u7684\u4f7f\u7528\u8005\u5bc6\u94a5\u7b7e\u540d\u7684\uff0c\u5e76\u4e14\u53ef\u4ee5\u4fe1\u4efb\u3002\u4ece\u90a3\u91cc\uff0c\u60a8\u53ef\u4ee5Base64\u89e3\u7801\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u5e76\u89e3\u6790\u51fa\u60a8\u9700\u8981\u7684\u4efb\u4f55\u503c\u3002\u6709\u5173\u8fd9\u4e9b\u503c\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605CanvasRequest\u3002\u5982\u679c\u4e24\u4e2a\u5b57\u7b26\u4e32\u4e0d\u540c\uff0c\u5219\u8bf7\u6c42\u672a\u4f7f\u7528\u60a8\u7684\u4f7f\u7528\u8005\u5bc6\u94a5\u8fdb\u884c\u6563\u5217\u548c\u7b7e\u540d\uff0c\u60a8\u5e94\u8be5\u5c06\u76f8\u5e94\u7684\u6d88\u606f\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u9a8c\u8bc1\u548c\u89e3\u7801\u7684\u529f\u80fd<\/h5>\n\n\n\n<p>\u8981\u9a8c\u8bc1\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\uff0c\u60a8\u53ef\u4ee5\u8c03\u7528Canvas SDK\u4e2d\u7684\u4ee5\u4e0b\u51fd\u6570\uff08\u5728<br\/>\nSalesforceCanvasFrameworkSDK\u7684\\ src \\\u4e3b\\ java\u7684\\\u5e06\u5e03\\ SignedRequest.java\uff09\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>verifyAndDecode &#8211; \u5c06\u5df2\u7b7e\u540d\u8bf7\u6c42\u7684\u5df2\u9a8c\u8bc1\u548c\u5df2\u89e3\u7801\u7248\u672c\u4f5c\u4e3aJava\u5bf9\u8c61\u8fd4\u56de\u3002<br\/><\/li><li>verifyAndDecodeAsJson &#8211; \u5c06\u5df2\u7b7e\u540d\u8bf7\u6c42\u7684\u7ecf\u8fc7\u9a8c\u8bc1\u548c\u89e3\u7801\u7684\u7248\u672c\u4f5c\u4e3aJSON\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u8fd4\u56de\u3002<\/li><\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528SDK\u4e2d\u7684\u51fd\u6570\u9a8c\u8bc1\u548c\u89e3\u7801\u7b7e\u540d\u8bf7\u6c42\u3002\u6b64\u4ee3\u7801\u5728\u6b64\u671f\u95f4\u62c6\u5206\u7b7e\u540d\u7684\u8bf7\u6c42\u5b57\u7b26\u4e32\uff0c\u4ee5\u89e3\u6790\u7b7e\u540d\u7684\u79d8\u5bc6\u548cBase64 JSON\u5b57\u7b26\u4e32\u3002\u7136\u540e\uff0c\u5b83\u4f1a\u52a0\u5bc6\u4f7f\u7528HMAC SHA-256\u7b97\u6cd5\u7b7e\u540d\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u8005\u5bc6\u94a5\uff0c\u5e76\u5c06\u52a0\u5bc6\u503c\u4e0eSalesforce\u53d1\u9001\u7ed9\u60a8\u7684\u52a0\u5bc6\u503c\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8fd9\u4e24\u4e2a\u503c\u76f8\u540c\uff0c\u5219\u8868\u793a\u4e0a\u4e0b\u6587\u6709\u6548\u4e14\u6765\u81eaSalesforce\u3002\u5982\u679c\u8fd9\u4e24\u4e2a\u503c\u4e0d\u540c\uff0c\u5219\u8bf7\u6c42\u4e0d\u662f\u6765\u81eaSalesforce\u3002<br\/><\/p>\n\n\n\n<p>\/**<br\/>\n*The utility method can be used to validate\/verify the signed request.<br\/>\n*In this case, the signed request is verified that it&#8217;s from Salesforce and that<br\/>\n*it has not been tampered with.<br\/>\n*This utility class has two methods. One verifies and decodes the request<br\/>\n*as a Java object, the other as a JSON String.<br\/>\n*\/<br\/>\npublic class SignedRequest {<br\/>\n    public static CanvasRequest verifyAndDecode(String input, String secret)<br\/>\n        throws SecurityException {<br\/>\n        String[] split = getParts(input);<br\/>\n        String encodedSig = split[0];<br\/>\n        String encodedEnvelope = split[1];<br\/>\n        \/\/ Deserialize the JSON body.<br\/>\n        String json_envelope = new String(new Base64(true).decode(encodedEnvelope)); <br\/>\n        ObjectMapper mapper = new ObjectMapper();<br\/>\n        ObjectReader reader = mapper.reader(CanvasRequest.class); <br\/>\n        CanvasRequest canvasRequest;<br\/>\n        String algorithm; <br\/>\n        try {<br\/>\n            canvasRequest = reader.readValue(json_envelope); algorithm = canvasRequest.getAlgorithm() == null ?<br\/>\n            &#8220;HMACSHA256&#8221; : canvasRequest.getAlgorithm();<br\/>\n        } catch (IOException e) {<br\/>\n            throw new SecurityException(String.format(&#8220;Error [%s] deserializing JSON to Object [%s]&#8221;, e.getMessage(), CanvasRequest.class.getName()), e);<br\/>\n        }<br\/>\n        verify(secret, algorithm, encodedEnvelope, encodedSig);<br\/>\n        \/\/ If we got this far, then the request was not tampered with.<br\/>\n        \/\/ Return the request as a Java object. <br\/>\n        return canvasRequest;<br\/>\n    }<br\/>\n    public static String verifyAndDecodeAsJson(String input, String secret) throws SecurityException {<br\/>\n        String[] split = getParts(input); <br\/>\n        String encodedSig = split[0]; <br\/>\n        String encodedEnvelope = split[1];<br\/>\n        String json_envelope = new String(new Base64(true).decode(encodedEnvelope)); <br\/>\n        ObjectMapper mapper = new ObjectMapper();<br\/>\n        String algorithm; StringWriter writer;<br\/>\n        TypeReference&lt;HashMap&lt;String,Object>> typeRef<br\/>\n        = new TypeReference&lt;HashMap&lt;String, Object>>() { };<br\/>\n        try {<br\/>\n            HashMap&lt;String,Object> o = mapper.readValue(json_envelope, typeRef); <br\/>\n            writer = new StringWriter();<br\/>\n            mapper.writeValue(writer,  o); <br\/>\n            algorithm = (String)o.get(&#8220;algorithm&#8221;);<br\/>\n        } catch (IOException e) {<br\/>\n            throw new SecurityException(String.format(&#8220;Error [%s] deserializing JSON to Object [%s]&#8221;, e.getMessage(),<br\/>\n            typeRef.getClass().getName()), e);<br\/>\n        }<br\/>\n        verify(secret, algorithm, encodedEnvelope, encodedSig);<br\/>\n        \/\/ If we got this far, then the request was not tampered with.<br\/>\n        \/\/ Return the request as a JSON string. <br\/>\n        return writer.toString();<br\/>\n    }<br\/>\n    private static String[] getParts(String input) {  <br\/>\n        if (input == null || input.indexOf(&#8220;.&#8221;) &lt;= 0) {<br\/>\n            throw new SecurityException(String.format(&#8220;Input [%s] doesn&#8217;t look like a signed request&#8221;, input));<br\/>\n        }<br\/>\n        String[] split = input.split(&#8220;[.]&#8221;, 2); return split;<br\/>\n    }<br\/>\n    private static void verify(String secret, String algorithm, String encodedEnvelope, String encodedSig )<br\/>\n        throws SecurityException<br\/>\n        {<br\/>\n            if (secret == null || secret.trim().length() == 0) {<br\/>\n            throw new IllegalArgumentException(&#8220;secret is null, did you set your environment variable CANVAS_CONSUMER_SECRET?&#8221;);<br\/>\n        }<br\/>\n        SecretKey hmacKey = null;<br\/>\n        try {<br\/>\n            byte[] key = secret.getBytes();<br\/>\n            hmacKey = new SecretKeySpec(key, algorithm); <br\/>\n            Mac mac = Mac.getInstance(algorithm); mac.init(hmacKey);<br\/>\n            \/\/ Check to see if the body was tampered with.<br\/>\n            byte[] digest = mac.doFinal(encodedEnvelope.getBytes());<br\/>\n            byte[] decode_sig = new Base64(true).decode(encodedSig);<br\/>\n            if (! Arrays.equals(digest, decode_sig)) {<br\/>\n                String label = &#8220;Warning: Request was tampered with&#8221;; throw new SecurityException(label);<br\/>\n            }<br\/>\n        } catch (NoSuchAlgorithmException e) {<br\/>\n            throw new SecurityException(String.format(&#8220;Problem with algorithm [%s] Error [%s]&#8221;, algorithm, e.getMessage()), e);<br\/>\n        } catch (InvalidKeyException e) {<br\/>\n            throw new SecurityException(String.format(&#8220;Problem with key [%s] Error [%s]&#8221;, hmacKey, e.getMessage()), e);<br\/>\n        }<br\/>\n        \/\/ If we got here and didn&#8217;t throw a SecurityException then all is good.<br\/>\n    }<br\/>\n}<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8c03\u7528verifyAndDecode\u51fd\u6570<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u83b7\u53d6\u7b7e\u540d\u8bf7\u6c42\uff0c\u7136\u540e\u4f7f\u7528verifyAndDecode\u51fd\u6570\u9a8c\u8bc1\u548c\u89e3\u7801\u8bf7\u6c42\u7684\u793a\u4f8b\u3002<\/p>\n\n\n\n<p>\/\/ From a JSP or servlet.<br\/>\n&lt;%@ page import=&#8221;canvas.SignedRequest&#8221; %><br\/>\n&lt;%@ page import=&#8221;java.util.Map&#8221; %><br\/>\n&lt;%<br\/>\n\/\/ Pull the signed request out of the request body and verify\/decode it. Map&lt;String, String[]> parameters = request.getParameterMap();<br\/>\nString[] signedRequest = parameters.get(&#8220;signed_request&#8221;); if (signedRequest == null) {%><br\/>\nThis app must be invoked via a signed request!&lt;% return;<br\/>\n}<br\/>\nString yourConsumerSecret=System.getenv(&#8220;CANVAS_CONSUMER_SECRET&#8221;); String signedRequest = SignedRequest.verifyAndDecode(signedRequest[0],<br\/>\nyourConsumerSecret);<br\/>\n%><br\/>\n\u2026<br\/>\n\/\/ From JavaScript, you can handle the signed request as needed. var signedRequest = &#8216;&lt;%=signedRequestJson%>&#8217;;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8c03\u7528verifyAndDecodeAsJson\u51fd\u6570<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u83b7\u53d6\u7b7e\u540d\u8bf7\u6c42\uff0c\u4f7f\u7528verifyAndDecodeAsJson\u51fd\u6570\u9a8c\u8bc1\u548c\u89e3\u7801\u8bf7\u6c42\u4ee5\u53ca\u89e3\u6790\u8fd4\u56de\u7684JSON\u7ed3\u679c\u7684\u793a\u4f8b\u3002<\/p>\n\n\n\n<p>\/\/ From a JSP or servlet.<br\/>\n&lt;%@ page import=&#8221;canvas.SignedRequest&#8221; %><br\/>\n&lt;%@ page import=&#8221;java.util.Map&#8221; %><br\/>\n&lt;%<br\/>\n\/\/ Pull the signed request out of the request body and verify\/decode it. Map&lt;String, String[]> parameters = request.getParameterMap();<br\/>\nString[] signedRequest = parameters.get(&#8220;signed_request&#8221;); if (signedRequest == null) {%><br\/>\nThis App must be invoked via a signed request!&lt;% return;<br\/>\n}<br\/>\nString yourConsumerSecret=System.getenv(&#8220;CANVAS_CONSUMER_SECRET&#8221;);<br\/>\nString signedRequestJson = SignedRequest.verifyAndDecodeAsJson(signedRequest[0], yourConsumerSecret);<br\/>\n%><br\/>\n\u2026<br\/>\n\/\/ From JavaScript, you can parse with your favorite JSON library. var signedRequest = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;);<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bf7\u6c42\u7b7e\u540d\u8bf7\u6c42<\/h4>\n\n\n\n<p>\u5982\u679c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u4e3a\u4f7f\u7528\u5df2\u7b7e\u540d\u7684\u8eab\u4efd\u9a8c\u8bc1\u8bf7\u6c42\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528SDK\u6309\u9700\u8bf7\u6c42\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002\u60a8\u7684\u5e94\u7528\u53ef\u4ee5\u8981\u6c42Salesforce\u91cd\u65b0\u53d1\u9001\u52a0\u8f7d\u5e94\u7528\u65f6\u4f7f\u7528\u7684\u5df2\u7b7e\u540d\u8bf7\u6c42\u6216\u53d1\u9001\u65b0\u7684\u5df2\u7b7e\u540d\u8bf7\u6c42\u3002\u5728\u91cd\u5b9a\u5411\u5e94\u7528\u7a0b\u5e8f\u540e\u5237\u65b0\u8fc7\u671f\u7684\u4f1a\u8bdd\u6216\u83b7\u53d6\u8eab\u4efd\u9a8c\u8bc1\u4fe1\u606f\u65f6\uff0c\u8bf7\u6c42\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528SDK\u4e2d\u7684refreshSignedRequest\uff08\uff09\u6216repost\uff08\uff09JavaScript\u65b9\u6cd5\u6309\u9700\u8bf7\u6c42\u7b7e\u540d\u8bf7\u6c42\u3002 refreshSignedRequest\uff08\uff09\u901a\u8fc7\u56de\u8c03\u8fd4\u56de\u4e00\u4e2a\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\uff0c\u800crepost\uff08\uff09\u8981\u6c42\u7236\u7a97\u53e3\u5411\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u53d1\u8d77\u4e00\u4e2a\u65b0\u7684POST\uff0c\u5e76\u4f7f\u7528\u5237\u65b0\u7684\u7b7e\u540d\u8bf7\u6c42\u91cd\u65b0\u52a0\u8f7d\u5e94\u7528\u9875\u9762\u3002<\/p>\n\n\n\n<p>\u65e0\u8bba\u4f55\u65f6\u9700\u8981\u5237\u65b0\u5e94\u7528\u7a0b\u5e8f\u7684\u7b7e\u540d\u8bf7\u6c42\uff0c\u8bf7\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\u65b9\u6848\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5237\u65b0\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u4fe1\u606f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u7b7e\u540d\u8bf7\u6c42\u4e2d\u7684OAuth\u4ee4\u724c\u901a\u5e38\u5728\u4e24\u5c0f\u65f6\u540e\u8fc7\u671f\u3002\u5982\u679cOAuth\u4ee4\u724c\u5df2\u8fc7\u671f\uff0c\u5e76\u4e14\u60a8\u9700\u8981\u53d1\u51fa\u5176\u4ed6API\u8bf7\u6c42\uff0c\u5219\u53ef\u4ee5\u8c03\u7528refreshSignedRequest\uff08\uff09\u4ee5\u83b7\u53d6\u65b0\u7684OAuth\u4ee4\u724c\uff0c\u800c\u4e0d\u4f1a\u4e2d\u65ad\u7528\u6237\u3002<br\/><\/li><li>Canvas\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u91cd\u5b9a\u5411\uff0c\u5c24\u5176\u662f\u5728\u5c1d\u8bd5\u8de8\u591a\u4e2a\u7cfb\u7edf\u63d0\u4f9b\u5355\u70b9\u767b\u5f55\u529f\u80fd\u65f6\u3002\u5982\u679c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u91cd\u5b9a\u5411\uff0c\u5219\u91cd\u5b9a\u5411URL\u5c06\u4e0d\u4f1a\u6536\u5230\u5305\u542b\u521d\u59cb\u7b7e\u540d\u8bf7\u6c42\u4fe1\u606f\u7684\u539f\u59cb\u8bf7\u6c42\u6b63\u6587\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u65b0\u65b9\u6cd5\u518d\u6b21\u8bf7\u6c42\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002<br\/><\/li><li>\u57282014\u5e74\u590f\u5b63\u53ca\u4e4b\u540e\uff0c\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u662f\u7528\u6237\u8ba4\u53ef\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u5982\u679c\u7528\u6237\u672a\u6279\u51c6\u60a8\u7684\u7528\u6237\u6279\u51c6\u7684\u5e94\u7528\uff0c\u5219\u60a8\u7684\u5e94\u7528\u5c06\u4e0d\u4f1a\u83b7\u5f97\u521d\u59cb\u7b7e\u540d\u8bf7\u6c42POST\u3002\u76f8\u53cd\uff0c\u60a8\u7684\u5e94\u7528\u9700\u8981\u901a\u8fc7OAuth\u6279\u51c6\uff0c\u7136\u540e\u60a8\u53ef\u4ee5\u8c03\u7528repost\uff08\uff09\u6765\u83b7\u53d6\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u3002<\/li><\/ul>\n\n\n\n<p>\u5fc5\u987b\u5c06\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u914d\u7f6e\u4e3a\u4f7f\u7528\u7b7e\u540d\u7684\u8eab\u4efd\u9a8c\u8bc1\u8bf7\u6c42\u624d\u80fd\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002 \u60a8\u8fd8\u9700\u8981\u5728JavaScript\u4ee3\u7801\u4e2d\u5f15\u7528canvas-all.js\uff0c\u5982\u5f15\u7528Canvas SDK\u4e2d\u6240\u8ff0\u3002<\/p>\n\n\n\n<p>\u8bf7\u6c42\u6210\u529f\u540e\uff0c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5fc5\u987b\u9a8c\u8bc1\u8fd4\u56de\u7684SignedRequest\u4fe1\u606f\u3002 \u6709\u5173\u9a8c\u8bc1\u4eceSalesforce\u63a5\u6536\u7684\u5df2\u7b7e\u540d\u8bf7\u6c42\u4fe1\u606f\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u9a8c\u8bc1\u548c\u89e3\u7801\u7b7e\u540d\u8bf7\u6c42\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Using <strong>refreshSignedRequest() <\/strong>to Obtain a Signed Request<\/h4>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><\/tr><\/tbody><\/table>\n\n\n\n<p>\u4f7f\u7528refreshSignedRequest\uff08\uff09\u901a\u8fc7\u60a8\u63d0\u4f9b\u7684\u56de\u8c03\u8bf7\u6c42\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\u3002 \u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u4f7f\u7528\u56de\u8c03\u8c03\u7528refreshSignedRequest\uff08\uff09\uff0c\u8be5\u56de\u8c03\u68c0\u67e5\u54cd\u5e94\u4ee3\u7801\uff0c\u7136\u540e\u5c06\u7b7e\u540d\u7684\u8bf7\u6c42\u89e3\u6790\u4e3a\u4f7f\u7528\u4f7f\u7528\u8005\u5bc6\u94a5\u548cBase64\u7f16\u7801\u7684\u4e0a\u4e0b\u6587\u672c\u8eab\u7b7e\u540d\u7684\u6563\u5217\u7684Based64\u4e0a\u4e0b\u6587\u3002<br\/><\/p>\n\n\n\n<p>\/\/ Gets a signed request on demand. Sfdc.canvas.client.refreshSignedRequest(function(data) {<br\/>\nif (data.status === 200) {<br\/>\nvar signedRequest =    data.payload.response; var part = signedRequest.split(&#8216;.&#8217;)[1];<br\/>\nvar obj = JSON.parse(Sfdc.canvas.decode(part));<br\/>\n}<br\/>\n}<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Using <strong>repost() <\/strong>to Obtain a Signed Request<\/h4>\n\n\n\n<p>\u4f7f\u7528repost\uff08\uff09\u6307\u793a\u7236\u7a97\u53e3\u5411\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u53d1\u9001\u65b0\u7684POST\u3002 POST\u5305\u542b\u52a0\u8f7d\u5e94\u7528\u7a0b\u5e8f\u65f6\u4f7f\u7528\u7684\u7b7e\u540d\u8bf7\u6c42\u6216\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\u3002 \u4e0erefreshSignedRequest\uff08\uff09\u4e0d\u540c\uff0c\u4f7f\u7528repost\uff08\uff09\u91cd\u65b0\u52a0\u8f7d\u753b\u5e03\u5e94\u7528\u9875\u9762\u3002 \u4ee5\u4e0b\u793a\u4f8b\u8c03\u7528repost\uff08\uff09\uff0c\u8be2\u95ee\u539f\u59cb\u7b7e\u540d\u8bf7\u6c42\u3002<\/p>\n\n\n\n<p>\/\/ Gets a signed request on demand, without refreshing the signed request. Sfdc.canvas.client.repost();<\/p>\n\n\n\n<p>The following example calls repost(), asking for a new signed request.<\/p>\n\n\n\n<p>\/\/ Gets a signed request on demand, first by refreshing the signed request. Sfdc.canvas.client.repost({refresh : true});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">OAuth\u8eab\u4efd\u9a8c\u8bc1<\/h3>\n\n\n\n<p>Canvas\u652f\u6301OAuth 2.0\u8fdb\u884c\u6388\u6743\u3002\u4f7f\u7528OAuth\u65f6\uff0c\u60a8\u6709\u4e24\u79cd\u9009\u62e9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Web\u670d\u52a1\u5668OAuth\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b &#8211; \u5f53\u7528\u6237\u8fd0\u884c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u4ed6\u4eec\u53ef\u4ee5\u6388\u6743\u5e94\u7528\u7a0b\u5e8f\u8bbf\u95ee\u5176\u6570\u636e\u3002\u8fd9\u8981\u6c42\u6bcf\u4e2a\u7528\u6237\u5141\u8bb8\u753b\u5e03\u5e94\u7528\u8bbf\u95ee\u5176\u4fe1\u606f\u3002\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u5982\u4f55\u4f7f\u7528Web\u670d\u52a1\u5668OAuth\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b\u5bf9\u8eab\u4efd\u9a8c\u8bc1\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\uff1f\u5728REST API\u5f00\u53d1\u4eba\u5458\u6307\u5357\u4e2d\u3002<br\/><\/li><li>\u7528\u6237\u4ee3\u7406OAuth\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b &#8211; \u5f53\u7528\u6237\u8fd0\u884c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u4ed6\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ec5\u4f7f\u7528\u6d4f\u89c8\u5668\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u6765\u6388\u6743\u5e94\u7528\u7a0b\u5e8f\u8bbf\u95ee\u5176\u6570\u636e\u3002\u4e0eWeb Server OAuth\u8eab\u4efd\u9a8c\u8bc1\u4e00\u6837\uff0c\u6b64\u9009\u9879\u8981\u6c42\u6bcf\u4e2a\u7528\u6237\u5141\u8bb8\u753b\u5e03\u5e94\u7528\u8bbf\u95ee\u5176\u4fe1\u606f\u3002<br\/>\u5efa\u8bae\u60a8\u5728\u5f00\u53d1\u671f\u95f4\u800c\u4e0d\u662f\u5728\u751f\u4ea7\u4e2d\u4f7f\u7528\u6b64\u6388\u6743\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4f7f\u7528\u6b64\u7c7b\u6388\u6743\u4e0d\u9700\u8981\u670d\u52a1\u5668\u7aef\u4ee3\u7801\uff0c\u4e5f\u65e0\u9700\u5c06\u5f00\u53d1\u8ba1\u7b97\u673a\u516c\u5f00\u5230Internet\u3002\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u201cREST API\u5f00\u53d1\u4eba\u5458\u6307\u5357\u201d\u4e2d\u7684\u4e86\u89e3\u7528\u6237\u4ee3\u7406OAuth\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b\u3002<br\/><br\/><\/li><\/ul>\n\n\n\n<p>\u65e0\u8bba\u60a8\u5b9e\u65bd\u54ea\u79cdOAuth\u6d41\uff0ccanvas\u5e94\u7528\u7a0b\u5e8f\u90fd\u5fc5\u987b\u63d0\u4f9b\u7528\u4e8e\u542f\u52a8\u57fa\u4e8e\u6807\u51c6\u7684OAuth\u6d41\u7684\u4ee3\u7801\u3002 OAuth\u6ce8\u610f\u4e8b\u9879\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Salesforce\u5728\u8c03\u7528\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u65f6\u6267\u884cHTTP GET\u3002<br\/><\/li><li>\u4f7f\u7528\u7528\u6237\u4ee3\u7406OAuth\uff0c\u53ef\u4ee5\u5728\u6d4f\u89c8\u5668\u4e2d\u6267\u884c\u6240\u6709\u6388\u6743\uff08\u4e0d\u9700\u8981\u670d\u52a1\u5668\u7aef\u4ee3\u7801\uff09\u3002<\/li><\/ul>\n\n\n\n<p>\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u4f7f\u7528OAuth\u8eab\u4efd\u9a8c\u8bc1\u7684\u73b0\u6709\u8fde\u63a5\u5e94\u7528\uff0c\u5e76\u4e14\u60a8\u5e0c\u671b\u5c06\u8be5\u5e94\u7528\u4f5c\u4e3a\u753b\u5e03\u5e94\u7528\u516c\u5f00\uff0c\u90a3\u4e48\u60a8\u6709\u4e24\u4e2a\u9009\u62e9\u3002\u9996\u5148\uff0c\u60a8\u53ef\u4ee5\u7f16\u8f91\u73b0\u6709\u5e94\u7528\u7a0b\u5e8f\uff08\u521b\u5efa\u65b0\u7248\u672c\uff09\u5e76\u5411\u5176\u6dfb\u52a0\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4fe1\u606f\u3002\u8fd9\u610f\u5473\u7740\u60a8\u7684\u5e94\u7528\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u76f8\u540c\u7684\u5ba2\u6237\u7aefID\u548c\u6d88\u8d39\u8005\u5bc6\u94a5\u3002\u7b2c\u4e8c\u4e2a\u9009\u9879\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u3002\u5982\u679c\u60a8\u8fd9\u6837\u505a\uff0c\u60a8\u5c06\u83b7\u5f97\u65b0\u7684\u5ba2\u6237\u7aefID\u548c\u6d88\u8d39\u8005\u4fdd\u5bc6\u4fe1\u606f\uff0c\u5e76\u4e14\u60a8\u9700\u8981\u4f7f\u7528\u8be5\u4fe1\u606f\u66f4\u65b0\u60a8\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Canvas App\u7528\u6237\u6d41 &#8211; OAuth<\/h4>\n\n\n\n<p>\u5982\u679c\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528OAuth\u8eab\u4efd\u9a8c\u8bc1\uff0c\u5219\u7528\u6237\u4f53\u9a8c\u4f1a\u56e0\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5728\u7528\u6237\u754c\u9762\u4e2d\u7684\u4f4d\u7f6e\u4ee5\u53ca\u5982\u4f55\u8bbe\u7f6e\u7528\u6237\u8bbf\u95ee\u6743\u9650\u800c\u5f02\u3002\u6b64\u56fe\u663e\u793a\u4e86\u4f7f\u7528OAuth\u8eab\u4efd\u9a8c\u8bc1\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u7528\u6237\u6d41\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"519\" height=\"833\" src=\"http:\/\/121.37.188.161\/wp-content\/uploads\/2018\/10\/image10.jpeg\" alt=\"\" class=\"wp-image-1653\" srcset=\"http:\/\/www.ponybai.com\/wp-content\/uploads\/2018\/10\/image10.jpeg 519w, http:\/\/www.ponybai.com\/wp-content\/uploads\/2018\/10\/image10-187x300.jpeg 187w\" sizes=\"(max-width: 519px) 100vw, 519px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u542f\u52a8OAuth\u6d41\u7a0b<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u663e\u793a\u5982\u4f55\u4f7f\u7528OAuth\u5728\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u542f\u52a8\u6388\u6743\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>&lt;html><br\/>\n&lt;head><br\/>\n&lt;script type=&#8221;text\/javascript&#8221; src=&#8221;\/sdk\/js\/canvas-all.js&#8221;>&lt;\/script><br\/>\n&lt;\/head><br\/>\n&lt;body><br\/>\n&lt;script><br\/>\nfunction loginHandler(e) { var uri;<br\/>\nif (! Sfdc.canvas.oauth.loggedin()) { uri = Sfdc.canvas.oauth.loginUrl(); Sfdc.canvas.oauth.login(<br\/>\n{uri : uri,<br\/>\nparams: {<br\/>\nresponse_type : &#8220;token&#8221;,<br\/>\nclient_id : &#8220;3MVG9lKcPoNINVBLigmW.8dAn4L5HwY VBzxbW5FFdzvU0re2f7o9aHJNUpY9ACdh.3SUgw5rF2nSsC9_cRqzD&#8221;, redirect_uri : encodeURIComponent(<br\/>\n&#8220;https:\/\/demoapp1234.herokuapp.com\/sdk\/callback.html&#8221;)<br\/>\n}});<br\/>\n}<br\/>\nelse {<br\/>\nSfdc.canvas.oauth.logout(); login.innerHTML = &#8220;Login&#8221;; Sfdc.canvas.byId(&#8220;oauth&#8221;).innerHTML = &#8220;&#8221;;<br\/>\n}<br\/>\nreturn false;<br\/>\n}<br\/>\n\/\/ Bootstrap the page once the DOM is ready. Sfdc.canvas(function() {<br\/>\n\/\/ On Ready\u2026<br\/>\nvar login    = Sfdc.canvas.byId(&#8220;login&#8221;), loggedIn = Sfdc.canvas.oauth.loggedin(), token = Sfdc.canvas.oauth.token()<br\/>\nlogin.innerHTML = (loggedIn) ? &#8220;Logout&#8221; : &#8220;Login&#8221;; if (loggedIn) {<br\/>\n\/\/ Only displaying part of the OAuth token for better formatting. Sfdc.canvas.byId(&#8220;oauth&#8221;).innerHTML = Sfdc.canvas.oauth.token()<br\/>\n.substring(1,40) + &#8220;\u2026&#8221;;<br\/>\n});<br\/>\n}<br\/>\nlogin.onclick=loginHandler;<br\/>\n&lt;\/script><br\/>\n&lt;h1 id=&#8221;header&#8221;>Canvas OAuth App&lt;\/h1><br\/>\n&lt;div><br\/>\naccess_token = &lt;span id=&#8221;oauth&#8221;>&lt;\/span><br\/>\n&lt;\/div><br\/>\n&lt;div><br\/>\n&lt;a id=&#8221;login&#8221; href=&#8221;#&#8221;>Login&lt;\/a>&lt;br\/><br\/>\n&lt;\/div><br\/>\n&lt;\/body><br\/>\n&lt;\/html><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u4e8eCanvas\u5e94\u7528\u7a0b\u5e8f\u7684SAML\u5355\u70b9\u767b\u5f55<\/h3>\n\n\n\n<p>\u65e0\u8bba\u60a8\u662f\u4f7f\u7528\u7b7e\u540d\u8bf7\u6c42\u8fd8\u662fOAuth\u6388\u6743\uff0c\u90fd\u53ef\u4ee5\u4f7f\u7528\u57fa\u4e8eSAML\u7684\u5355\u70b9\u767b\u5f55\uff08SSO\uff09\u4e3a\u60a8\u7684\u7528\u6237\u63d0\u4f9b\u65e0\u7f1d\u7684\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b\u3002\u60a8\u53ef\u4ee5\u5c06Salesforce\u7528\u4f5c\u8eab\u4efd\u63d0\u4f9b\u8005\u6216\u670d\u52a1\u63d0\u4f9b\u8005\u3002 SAML SSO\u4f7f\u60a8\u80fd\u591f\u901a\u8fc7SAML\u4e3a\u60a8\u7684\u7528\u6237\u63d0\u4f9b\u81ea\u52a8\u8eab\u4efd\u9a8c\u8bc1\uff0c\u5e76\u901a\u8fc7\u7b7e\u540d\u8bf7\u6c42\u5bf9Salesforce\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<p>SAML\uff08\u5b89\u5168\u65ad\u8a00\u6807\u8bb0\u8bed\u8a00\uff09\u662f\u4e00\u79cd\u57fa\u4e8eXML\u7684Web\u6807\u51c6\uff0c\u7528\u4e8e\u5728Web\u4e0a\u8fdb\u884c\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\uff0c\u5141\u8bb8\u5728\u4e24\u4e2a\u57df\u4e4b\u95f4\u4ea4\u6362\u6388\u6743\u6570\u636e\u3002\u4f7f\u7528\u6b64\u529f\u80fd\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u8be5\u5e94\u7528\u7a0b\u5e8f\u5728\u7528\u6237\u6253\u5f00\u65f6\u5f00\u59cb\u6807\u51c6SAML\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b\u3002\u6b64\u8fc7\u7a0b\u5b8c\u6210\u540e\uff0c\u7528\u6237\u5c06\u5728Web\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u4f7f\u7528\u7b7e\u540d\u8bf7\u6c42\u8eab\u4efd\u9a8c\u8bc1\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0cCanvas SDK\u4e2d\u5305\u542b\u7684\u4e24\u79cd\u65b9\u6cd5\u4f7f\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u8c03\u7528Salesforce\u4ee5\u76f4\u63a5\u63a5\u6536\u65b0\u7684\u5df2\u7b7e\u540d\u8bf7\u6c42\uff0c\u6216\u4f7fSalesforce\u80fd\u591f\u5c06\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42\u91cd\u65b0\u53d1\u5e03\u5230Web\u5e94\u7528\u7a0b\u5e8f\u7aef\u70b9\u3002\u8fd9\u5bfc\u81f4\u5b8c\u6574\u7684\u7aef\u5230\u7aef\u8eab\u4efd\u9a8c\u8bc1\u6d41\u7a0b\u3002<\/p>\n\n\n\n<p><strong>refreshSignedRequest <\/strong><strong>Method<\/strong><\/p>\n\n\n\n<p>\u901a\u8fc7\u56de\u8c03\u8fd4\u56de\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\u3002 SAML SSO\u6d41\u7a0b\u5b8c\u6210\u540e\uff0c\u60a8\u7684\u5e94\u7528\u53ef\u4ee5\u8c03\u7528\u6b64\u65b9\u6cd5\u5e76\u63a5\u6536\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\u3002\u6b64\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u4f7f\u7528\u66f4\u591a\u5ba2\u6237\u7aefJavaScript\u65b9\u6cd5\u68c0\u7d22\u7b7e\u540d\u8bf7\u6c42\u7684\u5f00\u53d1\u4eba\u5458\u3002 \uff08Canvas SDK\u5c06\u7b7e\u540d\u7684\u8bf7\u6c42\u53d1\u9001\u5230\u60a8\u7684\u5e94\u7528\u3002\uff09<\/p>\n\n\n\n<p><strong>repost <\/strong><strong>Method<\/strong><\/p>\n\n\n\n<p>\u8bf7\u6c42\u7236\u7a97\u53e3\u5411\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8POST\uff0c\u5e76\u4f7f\u7528\u5237\u65b0\u7684\u7b7e\u540d\u8bf7\u6c42\u91cd\u65b0\u52a0\u8f7d\u5e94\u7528\u7a0b\u5e8f\u9875\u9762\u3002 SAML SSO\u6d41\u7a0b\u5b8c\u6210\u540e\uff0c\u60a8\u7684\u5e94\u7528\u53ef\u4ee5\u8c03\u7528\u6b64\u65b9\u6cd5\uff0c\u5e76\u901a\u8fc7POST\u5c06\u65b0\u7b7e\u540d\u7684\u8bf7\u6c42\u53d1\u9001\u5230\u60a8\u7684\u5e94\u7528\u3002\u6b64\u65b9\u6cd5\u9002\u7528\u4e8e\u5e0c\u671b\u4f7f\u7528\u66f4\u591a\u670d\u52a1\u5668\u7aef\u65b9\u6cd5\u68c0\u7d22\u5df2\u7b7e\u540d\u8bf7\u6c42\u7684\u5f00\u53d1\u4eba\u5458\u3002 \uff08Salesforce\u5c06\u5df2\u7b7e\u540d\u7684\u8bf7\u6c42POST\u5230\u60a8\u7684\u670d\u52a1\u5668\u3002\uff09<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1aLightning Platform\u793e\u533a\u4e0a\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e0d\u652f\u6301\u542f\u52a8\u7684SAML\u542f\u52a8\u65b9\u6cd5\u6807\u8bc6\u63d0\u4f9b\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u83b7\u53d6\u4e0a\u4e0b\u6587<\/h2>\n\n\n\n<p>\u4f7f\u7528\u7b7e\u540d\u8bf7\u6c42\u9a8c\u8bc1\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u60a8\u5c06\u83b7\u5f97CanvasRequest\u5bf9\u8c61\uff08\u5176\u4e2d\u5305\u542bContext\u5bf9\u8c61\uff09\u4f5c\u4e3a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8fURL\u7684POST\u7684\u4e00\u90e8\u5206\u3002\u5982\u679c\u60a8\u4f7f\u7528OAuth\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\uff0c\u6216\u8005\u60f3\u8981\u8c03\u7528\u83b7\u53d6\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u8fdb\u884cJavaScript\u8c03\u7528\u6765\u6267\u884c\u6b64\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u662f\u83b7\u53d6\u4e0a\u4e0b\u6587\u7684JavaScript\u8c03\u7528\u793a\u4f8b\u3002\u6b64\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u6587\u672c\u201cGet Context\u201d\u7684\u94fe\u63a5\uff0c\u7136\u540e\u8c03\u7528Sfdc.canvas.client.ctx\u51fd\u6570\u3002<br\/><\/p>\n\n\n\n<p>&lt;script><br\/>\nfunction callback(msg) {<br\/>\nif (msg.status !== 200) { alert(&#8220;Error: &#8221; + msg.status); return;<br\/>\n}<br\/>\nalert(&#8220;Payload: &#8220;, msg.payload);<br\/>\n}<br\/>\nvar ctxlink = Sfdc.canvas.byId(&#8220;ctxlink&#8221;); var client = Sfdc.canvas.oauth.client(); ctxlink.onclick=function() {<br\/>\nSfdc.canvas.client.ctx(callback, client)};<br\/>\n}<br\/>\n&lt;\/script><br\/>\n&lt;a id=&#8221;ctxlink&#8221; href=&#8221;#&#8221;>Get Context&lt;\/a><\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><\/tr><\/tbody><\/table>\n\n\n\n<h2 class=\"wp-block-heading\">\u8de8\u57dfXHR<\/h2>\n\n\n\n<p>Canvas\u5e94\u7528\u7a0b\u5e8f\u52a0\u8f7d\u5728iFrame\u4e2d\u7684Salesforce\u9875\u9762\u4e0a\u3002\u56e0\u6b64\uff0ccanvas\u5e94\u7528\u7a0b\u5e8f\uff08\u5728\u5176\u81ea\u5df1\u7684\u57df\u4e2d\uff09\u65e0\u6cd5\u5c06XHR\uff08XML HTTP\u8bf7\u6c42\uff09\u8c03\u7528\u56de\u5230* .salesforce.com\u57df\u3002\u60a8\u53ef\u4ee5\u5f00\u53d1\u548c\u90e8\u7f72\u81ea\u5df1\u7684\u4ee3\u7406\u4f5c\u4e3aSDK\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u662f\uff0cCanvas\u63d0\u4f9b\u4e86\u7528JavaScript\u7f16\u5199\u7684\u5ba2\u6237\u7aef\u4ee3\u7406\u3002\u6b64\u4ee3\u7406\u4f7f\u5ba2\u6237\u7aefXHR\u8c03\u7528\u56deSalesforce\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u4f7f\u7528\u5ba2\u6237\u7aef\u7684\u6b64\u4ee3\u7406\u53d1\u51faXHR\u8bf7\u6c42\uff0c\u5219API\u4f1a\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u5916\u90e8iFrame\uff0c\u5e76\u4ee3\u8868\u60a8\u63d0\u4ea4\u8bf7\u6c42\u3002\u8bf7\u6c42\u5b8c\u6210\u540e\uff0cSDK\u4f1a\u4f7f\u7528\u7ed3\u679c\u8c03\u7528\u5ba2\u6237\u7aef\u7684\u56de\u8c03\u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5982\u4f55\u8fdb\u884cXHR\u8c03\u7528\u7684\u793a\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u83b7\u53d6Chatter\u7528\u6237\u5217\u8868<br\/><\/li><li>\u53d1\u5e03\u5230Chatter Feed<\/li><\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1aSDK\u652f\u6301\u8de8\u57dfXHR\u8c03\u7528\uff0c\u4f46\u4e0d\u5e94\u5c06\u5176\u7528\u4e8e\u8fdb\u884c\u540c\u57df\u8c03\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u83b7\u53d6Chatter\u7528\u6237\u5217\u8868<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u663e\u793a\u4e86\u4e00\u4e2a\u8fd4\u56deChatter\u7528\u6237\u5217\u8868\u7684\u8c03\u7528\u3002<br\/><\/p>\n\n\n\n<p>\/\/ Paste the signed request string into a JavaScript object for easy access. var sr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;);<br\/>\n\/\/ Reference the Chatter user&#8217;s URL from Context.Links object. var chatterUsersUrl = sr.context.links.chatterUsersUrl;<br\/>\n\/\/ Make an XHR call back to salesforce through the supplied browser proxy. Sfdc.canvas.client.ajax(chatterUsersUrl,<br\/>\n{client : sr.client, success : function(data){<br\/>\n\/\/ Make sure the status code is OK. if (data.status === 200) {<br\/>\n\/\/ Alert with how many Chatter users were returned. alert(&#8220;Got back &#8221;    + data.payload.users.length +<br\/>\n&#8221; users&#8221;); \/\/ Returned 2 users<br\/>\n}<br\/>\n}});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53d1\u5e03\u5230Chatter Feed<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u663e\u793a\u4e86\u5c06\u9879\u76ee\u53d1\u5e03\u5230\u4e0a\u4e0b\u6587\u7528\u6237\u7684Chatter\u6458\u8981\u7684\u8c03\u7528\u3002<\/p>\n\n\n\n<p>var sr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;);<br\/>\n\/\/ Reference the Chatter user&#8217;s URL from Context.Links object.<br\/>\nvar url = sr.context.links.chatterFeedsUrl+&#8221;\/news\/&#8221;+sr.context.user.userId+&#8221;\/feed-items&#8221;; <br\/>\nvar body = {body : {messageSegments : [{type: &#8220;Text&#8221;, text: &#8220;Some Chatter Post&#8221;}]}};<br\/>\nSfdc.canvas.client.ajax(url,<br\/>\n{client : sr.client, method: &#8216;POST&#8217;,<br\/>\ncontentType: &#8220;application\/json&#8221;, data: JSON.stringify(body), success : function(data) {<br\/>\nif (201 === data.status) { alert(&#8220;Success&#8221;);<br\/>\n}<br\/>\n}<br\/>\n});<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f<br\/><\/h2>\n\n\n\n<p>Canvas\u63d0\u4f9b\u4e86\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5927\u5c0f\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u5728SDK\u548c\u6b64\u5904\u627e\u5230\u8fd9\u4e9b\u65b9\u6cd5\u7684\u5b8c\u6574\u53c2\u8003\u6587\u6863\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>autogrow &#8211; \u542f\u52a8\u6216\u505c\u6b62\u8ba1\u65f6\u5668\uff0c\u8be5\u8ba1\u65f6\u5668\u68c0\u67e5\u753b\u5e03iFrame\u7684\u5185\u5bb9\u5927\u5c0f\u5e76\u8c03\u6574\u5e27\u3002\u8bf7\u53c2\u9605\u81ea\u52a8\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5927\u5c0f\u3002<br\/><\/li><li>resize-\u901a\u77e5\u7236\u7a97\u53e3\u8c03\u6574\u753b\u5e03iFrame\u7684\u5927\u5c0f\u3002\u8bf7\u53c2\u9605\u663e\u5f0f\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5927\u5c0f\u3002<br\/><\/li><li>size &#8211; \u8fd4\u56de\u753b\u5e03iFrame\u7684\u5f53\u524d\u5927\u5c0f\u3002\u8bf7\u53c2\u9605\u83b7\u53d6\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f\u3002<br\/><\/li><li>subscribe &#8211; \u8ba2\u9605\u7236\u4e8b\u4ef6\u3002\u76ee\u524d\uff0ccanvas.scroll\uff08\u7236\u7ea7\uff09\u662fcanvas\u547d\u540d\u7a7a\u95f4\u4e2d\u552f\u4e00\u53d7\u652f\u6301\u7684\u7236\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u8ba2\u9605\u7236\u4e8b\u4ef6\u3002<\/li><\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1a\u8981\u4f7f\u8c03\u6574\u5927\u5c0f\u51fd\u6570\u4e0ecanvas\u5e94\u7528\u7a0b\u5e8f\u4e00\u8d77\u4f7f\u7528\uff0c\u5fc5\u987b\u5728\u4e0e\u8be5\u5e94\u7528\u7a0b\u5e8f\u5173\u8054\u7684\u4efb\u4f55HTML\u9875\u9762\u7684\u9876\u90e8\u58f0\u660eDOCTYPE\u3002 \u4f8b\u5982\uff1a&lt;\uff01DOCTYPE html>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u52a8\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528autogrow\u65b9\u6cd5\u6765\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f\u3002 \u5f53\u60a8\u7684\u5185\u5bb9\u66f4\u6539\u5927\u5c0f\u65f6\u4f7f\u7528\u6b64\u65b9\u6cd5\uff0c\u4f46\u60a8\u4e0d\u786e\u5b9a\u4f55\u65f6\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5728Mozilla\u00aeFirefox\u00ae\u548cMicrosoft\u00aeInternetExplorer\u00ae\u4e2d\uff0c\u5982\u679c\u5185\u5bb9\u5927\u5c0f\u51cf\u5c0f\uff0c\u81ea\u52a8\u589e\u957f\u65b9\u6cd5\u53ef\u80fd\u65e0\u6cd5\u8c03\u6574\u5e27\u5927\u5c0f\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528resize\u65b9\u6cd5\u6307\u5b9a\u8981\u5c06\u5e27\u66f4\u6539\u4e3a\u7684\u786e\u5207\u5927\u5c0f\u3002<\/p>\n\n\n\n<p>\/\/ Turn on auto grow with default settings. Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.autogrow(sr.client);<br\/>\n});<br\/>\n\/\/ Turn on auto grow with polling interval of 100ms (milliseconds). Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.autogrow(sr.client, true, 100);<br\/>\n});<br\/>\n\/\/ Turn off auto grow. Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.autogrow(sr.client, false);<br\/>\n});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u663e\u5f0f\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528resize\u65b9\u6cd5\u6765\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f\u3002\u5982\u679c\u672a\u6307\u5b9a\u9ad8\u5ea6\u548c\u5bbd\u5ea6\u53c2\u6570\uff0c\u7236\u7a97\u53e3\u5c06\u5c1d\u8bd5\u6839\u636e\u5176\u5185\u5bb9\u786e\u5b9a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u9ad8\u5ea6\uff0c\u7136\u540e\u76f8\u5e94\u5730\u8bbe\u7f6eiFrame\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u3002<\/p>\n\n\n\n<p>\/\/ Automatically determine the size. Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.resize(sr.client);<br\/>\n});<br\/>\n\/\/ Set the height and width explicitly.<br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.resize(sr.client, {height : &#8220;1000px&#8221;, width : &#8220;900px&#8221;});<br\/>\n});<br\/>\n\/\/ Set only the height. Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.resize(sr.client, {height : &#8220;1000px&#8221;});<br\/>\n});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u83b7\u53d6\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528size\u65b9\u6cd5\u4ee5\u83b7\u53d6\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5927\u5c0f\u3002 console.log\u51fd\u6570\u8f93\u51fa\u5e27\u5927\u5c0f\uff0c\u4ee5\u4fbf\u60a8\u5728\u8c03\u6574\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5927\u5c0f\u65f6\u53ef\u4ee5\u770b\u5230\u5927\u5c0f\u66f4\u6539\u3002<\/p>\n\n\n\n<p>\/\/ Get the canvas app sizes in the sizes object. var sizes = Sfdc.canvas.client.size();<br\/>\nconsole.log(&#8220;contentHeight; &#8221; + sizes.heights.contentHeight); <br\/>\nconsole.log(&#8220;pageHeight; &#8221; + sizes.heights.pageHeight); <br\/>\nconsole.log(&#8220;scrollTop; &#8221; + sizes.heights.scrollTop); <br\/>\nconsole.log(&#8220;contentWidth; &#8221; + sizes.widths.contentWidth); <br\/>\nconsole.log(&#8220;pageWidth; &#8221; + sizes.widths.pageWidth); <br\/>\nconsole.log(&#8220;scrollLeft; &#8221; + sizes.widths.scrollLeft);<br\/>\n\/\/ Resize the canvas app. Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); Sfdc.canvas.client.autogrow(sr.client);<br\/>\n});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba2\u9605\u7236\u6d3b\u52a8<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528subscribe\u65b9\u6cd5\uff0c\u4ee5\u4fbfcanvas\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u8ba2\u9605\u7236\u4e8b\u4ef6\u3002\u6b64\u793a\u4f8b\u5904\u7406\u7528\u6237\u5728\u7236\u7a97\u53e3\u4e2d\u6eda\u52a8\u65f6\u89e6\u53d1\u7684onscroll\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p>\/\/Subscribe to the parent window onscroll event. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;);<br\/>\n\/\/ Capture the onScrolling event of the parent window <br\/>\nSfdc.canvas.client.subscribe(sr.client,<br\/>\n{name : &#8216;canvas.scroll&#8217;, onData : function (event) {<br\/>\nconsole.log(&#8220;Parent&#8217;s contentHeight; &#8221; + event.heights.contentHeight); <br\/>\nconsole.log(&#8220;Parent&#8217;s pageHeight; &#8221; + event.heights.pageHeight); <br\/>\nconsole.log(&#8220;Parent&#8217;s scrollTop; &#8221; + event.heights.scrollTop); <br\/>\nconsole.log(&#8220;Parent&#8217;s contentWidth; &#8221; + event.widths.contentWidth); <br\/>\nconsole.log(&#8220;Parent&#8217;s pageWidth; &#8221; + event.widths.pageWidth); <br\/>\nconsole.log(&#8220;Parent&#8217;s scrollLeft; &#8221; + event.widths.scrollLeft);<br\/>\n}}<br\/>\n);<br\/>\n});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5904\u7406\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u65b9\u5411\u66f4\u6539<\/h3>\n\n\n\n<p>\u901a\u8fc7\u65b9\u5411\u4e8b\u4ef6\uff0c\u60a8\u53ef\u4ee5\u5728\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u663e\u793a\u5728\u79fb\u52a8\u8bbe\u5907\u4e0a\u65f6\u5904\u7406\u65b9\u5411\u66f4\u6539\u3002\u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605\u8be5\u4e8b\u4ef6\u540e\uff0c\u53ea\u8981\u7236\u7a97\u53e3\u89e6\u53d1window.orientation\u4e8b\u4ef6\uff0c\u5c31\u4f1a\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002\u8be5\u4e8b\u4ef6\u8fd4\u56de\u5305\u542b\u8fd9\u4e9b\u503c\u7684\u6709\u6548\u5185\u5bb9\u3002<\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr style=\"height: 45px;\"><td style=\"height: 45px;\"><strong>Value<\/strong><\/td><td style=\"height: 45px;\"><strong>Description<\/strong><\/td><\/tr><tr style=\"height: 73px;\"><td style=\"height: 73px;\">clientHeight<\/td><td style=\"height: 73px;\">\u5e94\u7528\u7a0b\u5e8f\u7684\u9ad8\u5ea6\uff08\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\uff09\uff0c\u7279\u5b9a\u4e8e\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5448\u73b0\u7684\u8bbe\u5907<\/td><\/tr><tr style=\"height: 75px;\"><td style=\"height: 75px;\">clientWidth<\/td><td style=\"height: 75px;\">\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u5bbd\u5ea6\uff08\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\uff09\uff0c\u7279\u5b9a\u4e8e\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6e32\u67d3\u7684\u8bbe\u5907<\/td><\/tr><tr style=\"height: 101px;\"><td style=\"height: 101px;\">orientation<\/td><td style=\"height: 101px;\">\u5305\u542b\u5176\u4e2d\u4e00\u4e2a\u503c\u3002<br\/>\u20220\uff1a\u6a2a\u5411\u5230\u7eb5\u5411<br\/>\u202290\uff1a\u7eb5\u5411\u5230\u6a2a\u5411<br\/>\u2022-90\uff1a\u9006\u65f6\u9488\u8f6c\u52a8\u7eb5\u5411\u5230\u6a2a\u5411<\/td><\/tr><\/tbody><\/table>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u663e\u793a\u5982\u4f55\u8ba2\u9605orientation\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p>\/\/ Capture the orientation event of the parent window. <br\/>\nSfdc.canvas.client.subscribe(sr.client,<br\/>\n{name : &#8216;canvas.orientation&#8217;, <br\/>\nonData : function (event) {<br\/>\nconsole.log(&#8220;Parent&#8217;s orientation: &#8221; + event.orientation + &#8220;Canvas app height: &#8221; + event.clientHeight + &#8220;Canvas app width: &#8221; + event. clientWidth);<br\/>\n}} );<br\/>\n});<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1aWindows\u624b\u673a\u4e0d\u652f\u6301\u65b9\u5411\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><\/tr><\/tbody><\/table>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u73b0Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6<\/h2>\n\n\n\n<p>\u4e8b\u4ef6\u63d0\u4f9b\u4e86\u4e00\u79cd\u57fa\u4e8eJavaScript\u7684\u65b9\u5f0f\u6765\u5728\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u53d1\u9001\u548c\u63a5\u6536\u4e8b\u4ef6\u3002\u4f7f\u7528\u4e8b\u4ef6\u53ef\u5728\u5355\u4e2a\u9875\u9762\u4e0a\u542f\u7528\u591a\u4e2a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u4e00\u79cd\u60c5\u51b5\u53ef\u80fd\u662f\u60a8\u5c06\u4e24\u4e2a\u81ea\u5b9a\u4e49\u5e94\u7528\u7a0b\u5e8f\u516c\u5f00\u4e3a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7684\u9875\u9762\uff1a\u65c5\u884c\u548c\u8d39\u7528\u5e94\u7528\u7a0b\u5e8f\u4ee5\u53ca\u6279\u51c6\u5e94\u7528\u7a0b\u5e8f\u3002\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e8b\u4ef6\uff0c\u4ee5\u4fbf\u5728\u8d39\u7528\u62a5\u8868\u7684\u72b6\u6001\u53d1\u751f\u66f4\u6539\u65f6\uff0c\u8be5\u4e8b\u4ef6\u4f1a\u88ab\u5f15\u53d1\u5e76\u5305\u542b\u6709\u5173\u8be5\u8d39\u7528\u62a5\u8868\u7684\u6570\u636e\uff08\u91c7\u7528JSON\u683c\u5f0f\uff09\u3002\u5ba1\u6279\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605\u8be5\u4e8b\u4ef6\uff0c\u5e76\u6307\u5b9a\u5728\u5f15\u53d1\u4e8b\u4ef6\u65f6\u8c03\u7528\u7684\u51fd\u6570\u3002\u72b6\u6001\u66f4\u6539\u540e\uff0c\u6279\u51c6\u5e94\u7528\u7a0b\u5e8f\u5c06\u63a5\u6536\u4e8b\u4ef6\u5e76\u8fd0\u884c\u6307\u5b9a\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p>Canvas\u63d0\u4f9b\u4e86\u5728canvas\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u7684\u65b9\u6cd5\u3002\u53ef\u4ee5\u5728SDK\u548c\u6b64\u5904\u627e\u5230\u8fd9\u4e9b\u65b9\u6cd5\u7684\u5b8c\u6574\u53c2\u8003\u6587\u6863\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>publish &#8211; \u521b\u5efa\u5176\u4ed6\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6216Visualforce\u9875\u9762\u53ef\u4ee5\u8ba2\u9605\u7684\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u521b\u5efa\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<br\/><\/li><li>subscribe &#8211; \u8ba2\u9605\u7236\u4e8b\u4ef6\u6216\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u3002\u6b64\u65b9\u6cd5\u53ef\u7528\u4e8e\u8ba2\u9605\u591a\u4e2a\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u8ba2\u9605Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<br\/><\/li><li>unsubscribe &#8211; \u53d6\u6d88\u8ba2\u9605\u7236\u4e8b\u4ef6\u6216\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u3002\u6b64\u65b9\u6cd5\u53ef\u7528\u4e8e\u53d6\u6d88\u8ba2\u9605\u591a\u4e2a\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u53d6\u6d88\u8ba2\u9605Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<\/li><\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1asubscribe\u548cunsubscribe\u65b9\u6cd5\u4e5f\u53ef\u7528\u4e8e\u8ba2\u9605\u5355\u4e2aStreaming API\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<p>\u5728\u5b9e\u73b0\u753b\u5e03\u5e94\u7528\u4e8b\u4ef6\u65f6\uff0c\u8bf7\u8bb0\u4f4f\u4ee5\u4e0b\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6211\u4eec\u5efa\u8bae\u60a8\u5728\u547d\u540d\u4e8b\u4ef6\u65f6\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\uff0c\u4f46\u8fd9\u4e0d\u662f\u5fc5\u9700\u7684\u3002<br\/><\/li><li>\u4e8b\u4ef6\u547d\u540d\u7a7a\u95f4\u4e0eSalesforce\u4e2d\u7684\u7ec4\u7ec7\u547d\u540d\u7a7a\u95f4\u4e0d\u540c\u3002\u4f46\u662f\uff0c\u5982\u679c\u4f7f\u7528\u540d\u79f0\u7a7a\u95f4\uff0c\u6211\u4eec\u5efa\u8bae\u60a8\u5c06\u4e8b\u4ef6\u540d\u79f0\u7a7a\u95f4\u4e0e\u7ec4\u7ec7\u540d\u79f0\u7a7a\u95f4\u76f8\u540c\u3002<br\/><\/li><li>\u547d\u540d\u7a7a\u95f4\u5fc5\u987b\u662f\u4e0d\u5305\u542b\u53e5\u70b9\u7684\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0cmy.name.space.statusChanged\u65e0\u6548\u3002\u5177\u6709\u547d\u540d\u7a7a\u95f4\u7684\u6709\u6548\u4e8b\u4ef6\u540d\u79f0\u7684\u793a\u4f8b\u662fmynamespace.statusChanged\u3002<br\/><\/li><li>\u8fd9\u4e9b\u540d\u79f0\u662f\u4fdd\u7559\u7684\uff0c\u4e0d\u80fd\u7528\u4f5c\u547d\u540d\u7a7a\u95f4\uff1a<br\/>\u2013 canvas<br\/>\u2013 chatter<br\/>\u2013 force<br\/>\u2013 publisher<br\/>\u2013 salesforce<br\/>\u2013 sfdc<br\/><\/li><li>\u4e8b\u4ef6\u4ec5\u5728\u540c\u4e00\u9875\u9762\u4e0a\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u8d77\u4f5c\u7528\u3002\u5982\u679cChatter\u9009\u9879\u5361\u4e0a\u6709\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u5219\u8be5\u5e94\u7528\u7a0b\u5e8f\u65e0\u6cd5\u8ba2\u9605Visualforce\u9875\u9762\u4e0a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u53d1\u5e03\u7684\u4e8b\u4ef6\u3002<br\/><\/li><li>\u60a8\u53ef\u4ee5\u5728\u8ba2\u9605\u547c\u53eb\u4e2d\u8ba2\u9605\u591a\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u3002<br\/><\/li><li>\u60a8\u53ef\u4ee5\u5728\u8ba2\u9605\u547c\u53eb\u4e2d\u4ec5\u8ba2\u9605\u4e00\u4e2aStreaming API\u4e8b\u4ef6\u3002<br\/><\/li><li>\u60a8\u65e0\u6cd5\u4f7f\u7528\u76f8\u540c\u7684\u8ba2\u9605\u8c03\u7528\u8ba2\u9605\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u548cStreaming API\u4e8b\u4ef6\u3002<br\/><\/li><li>\u5982\u679c\u5728\u6570\u7ec4\u4e2d\u5b9a\u4e49\u5177\u6709\u76f8\u540c\u540d\u79f0\u7684\u591a\u4e2a\u4e8b\u4ef6\uff0c\u5219\u53ea\u6709\u6700\u540e\u5b9a\u4e49\u7684\u4e8b\u4ef6\u53ef\u7528\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u72b6\u6001\u4e3a\u534f\u5546\u7684\u6700\u540e\u4e00\u4e2a\u4e8b\u4ef6\u662f\u4f7f\u7528\u7684\u4e8b\u4ef6\u3002<br\/>\u5bf9\u4e8eStreaming API\u4e8b\u4ef6\u4e5f\u662f\u5982\u6b64\u3002<\/li><\/ul>\n\n\n\n<p>Sfdc.canvas.client.subscribe(sr.client, [<br\/>\n{<br\/>\nname :&#8221;mynamespace.statusChanged&#8221;, payload : {status : &#8216;Closed&#8217;}<br\/>\n},<br\/>\n{<br\/>\nname:&#8221;mynamespace.statusChanged&#8221;, payload : {status : &#8216;Negotiating&#8217;}<br\/>\n]);<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u521b\u5efaCanvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528publish\u65b9\u6cd5\u6765\u521b\u5efa\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002\u5982\u679c\u60a8\u6b63\u5728\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\uff0c\u5219\u4e8b\u4ef6\u540d\u79f0\u5fc5\u987b\u4ee5\u547d\u540d\u7a7a\u95f4\u5f00\u5934\u3002\u4f8b\u5982\uff0cnamespace.eventName\u3002<\/p>\n\n\n\n<p>Sfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.publish(sr.client,<br\/>\n{name : &#8220;mynamespace.statusChanged&#8221;, payload : {status : &#8216;Completed&#8217;}});<br\/>\n});<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba2\u9605Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u8ba2\u9605\u81ea\u5b9a\u4e49\u4e8b\u4ef6<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528subscribe\u65b9\u6cd5\u6765\u8ba2\u9605\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p>\/\/ Subscribe to a custom event. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); Sfdc.canvas.client.subscribe(sr.client,<br\/>\n{name : &#8216;mynamespace.statusChanged&#8217;, onData : function (event) { console.log(&#8220;Subscribed to custom event &#8220;, event);<br\/>\n}}<br\/>\n);<br\/>\n});<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8ba2\u9605\u591a\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528subscribe\u65b9\u6cd5\u4ee5\u8ba2\u9605\u591a\u4e2a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002\u60a8\u8ba2\u9605\u7684\u4e8b\u4ef6\u53ef\u4ee5\u4f4d\u4e8e\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\uff0c\u4e5f\u53ef\u80fd\u6ca1\u6709\u547d\u540d\u7a7a\u95f4\u3002\u5f53\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605\u67d0\u4e2a\u4e8b\u4ef6\u65f6\uff0c\u5b83\u4f1a\u5728\u4e8b\u4ef6\uff08\u5728\u53e6\u4e00\u4e2a\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff09\u548c\u4e00\u4e2a\u51fd\u6570\uff08\u5728\u8ba2\u9605\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff09\u4e4b\u95f4\u521b\u5efa\u5173\u8054\u3002<\/p>\n\n\n\n<p>\/\/ Subscribe to multiple events. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.subscribe(sr.client, [<br\/>\n{name : &#8216;mynamespace.statusChanged&#8217;, onData : handler1},<br\/>\n{name : &#8216;anothernamespace.tripCancelled&#8217;, onData : handler2},<br\/>\n]);<br\/>\n});<\/p>\n\n\n\n<p>\u4f7f\u7528\u65c5\u884c\u548c\u8d39\u7528\u4ee5\u53ca\u5ba1\u6279\u753b\u5e03\u5e94\u7528\u793a\u4f8b\uff0c\u60a8\u7684\u5ba1\u6279\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u6709\u4e24\u4e2a\u529f\u80fd\uff1ahandler1\u548chandler2\u3002\u8be5\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u7136\u540e\u8ba2\u9605\u65c5\u884c\u548c\u8d39\u7528\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u4e24\u4e2a\u4e8b\u4ef6\uff1amynamespace.statusChanged\u548cmynamespace.tripCancelled\u3002\u5f53\u6279\u51c6\u5e94\u7528\u7a0b\u5e8f\u6536\u5230mynamespace.statusChanged\u4e8b\u4ef6\u65f6\uff0c\u5c06\u8c03\u7528\u51fd\u6570handler1\u3002\u5f53\u6279\u51c6\u5e94\u7528\u7a0b\u5e8f\u6536\u5230anothernamespace.tripCancelled\u4e8b\u4ef6\u65f6\uff0c\u5c06\u8c03\u7528\u51fd\u6570handler2\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53d6\u6d88\u8ba2\u9605Canvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u53d6\u6d88\u8ba2\u9605\u81ea\u5b9a\u4e49\u4e8b\u4ef6<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528unsubscribe\u65b9\u6cd5\u53d6\u6d88\u8ba2\u9605\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p>\/\/ Unsubscribe from a custom event. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.unsubscribe(sr.client, {name : &#8220;mynamespace.statusChanged&#8221;});<br\/>\n});<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u53d6\u6d88\u8ba2\u9605\u591a\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528unsubscribe\u65b9\u6cd5\u53d6\u6d88\u8ba2\u9605\u591a\u4e2acanvas\u5e94\u7528\u7a0b\u5e8f\u4e8b\u4ef6\u3002\u60a8\u8ba2\u9605\u7684\u4e8b\u4ef6\u53ef\u4ee5\u4f4d\u4e8e\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\uff0c\u4e5f\u53ef\u80fd\u6ca1\u6709\u547d\u540d\u7a7a\u95f4\u3002<\/p>\n\n\n\n<p>\/\/ Unsubscribe from multiple events. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;); <br\/>\nSfdc.canvas.client.unsubscribe(sr.client, [&#8216;mynamespace.statusChanged&#8217;,<br\/>\n&#8220;anothernamespace.tripCancelled&#8221;]);<br\/>\n});<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728Canvas\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528Streaming API<\/h2>\n\n\n\n<p>Canvas\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e8b\u4ef6\u548c\u65b9\u6cd5\uff0c\u4f7f\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u80fd\u591f\u4fa6\u542cStreaming API\u901a\u77e5\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>sfdc.streamingapi-JavaScript\u4e8b\u4ef6\uff0c\u60a8\u521b\u5efa\u5e76\u4e0ePushTopic\u5b9a\u4e49\u7684Streaming API\u901a\u9053\u5173\u8054\u3002\u8bf7\u53c2\u9605\u4f7f\u7528Streaming API\u4e8b\u4ef6\u3002<br\/><\/li><li>subscribe &#8211; \u8ba2\u9605\u60a8\u5b9a\u4e49\u7684sfdc.streamingapi\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u8ba2\u9605\u6d41\u5f0fAPI\u4e8b\u4ef6\u3002<br\/><\/li><li>unsubscribe &#8211; \u53d6\u6d88\u8ba2\u9605sfdc.streamingapi\u4e8b\u4ef6\u3002\u8bf7\u53c2\u9605\u4eceStreaming API\u4e8b\u4ef6\u4e2d\u53d6\u6d88\u8ba2\u9605\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528Streaming API\u4e8b\u4ef6<\/h3>\n\n\n\n<p>Canvas SDK\u5305\u542b\u4e00\u4e2a\u540d\u4e3asfdc.streamingapi\u7684\u4e8b\u4ef6\uff0c\u5b83\u5141\u8bb8\u60a8\u5728\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9a\u4e49\u4e8b\u4ef6\u5e76\u5c06\u8be5\u4e8b\u4ef6\u4e0eStreaming API\u901a\u9053\u76f8\u5173\u8054\u3002\u7136\u540e\uff0c\u60a8\u4f7f\u7528subscribe\u65b9\u6cd5\u8ba2\u9605\u8be5\u4e8b\u4ef6\u5e76\u63a5\u6536Streaming API\u901a\u77e5\u3002<br\/><\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5728Salesforce\u4e2d\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2aStreaming API\u901a\u9053\uff0c\u8be5\u901a\u9053\u5728\u66f4\u65b0InvoiceStatement\u5e76\u4e14Status\u66f4\u6539\u4e3aClosed\u65f6\u63a5\u6536\u901a\u77e5\u3002\u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e0e\u8be5\u9891\u9053\u5173\u8054\u7684\u4e8b\u4ef6\u5e76\u8ba2\u9605\u5b83\u3002\u5728Salesforce\u4e2d\uff0c\u53ea\u8981\u5173\u95ed\u53d1\u7968\u58f0\u660e\uff0c\u6fc0\u6d3b\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5c31\u4f1a\u6536\u5230\u901a\u77e5\uff0c\u5e76\u53ef\u4ee5\u6267\u884c\u64cd\u4f5c\uff0c\u4f8b\u5982\u5411\u7528\u6237\u663e\u793a\u6d88\u606f\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u5b9a\u4e49Streaming API\u4e8b\u4ef6\u65f6\u7684\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4e8b\u4ef6\u91c7\u7528\u5305\u542bPushTopic\u540d\u79f0\u7684\u5355\u4e2a\u53c2\u6570\u3002<br\/><\/li><li>PushTopic\u540d\u79f0\u5fc5\u987b\u4ee5\u201c\/ topic \/\u201d\u5f00\u5934\u3002<\/li><\/ul>\n\n\n\n<p>{name:&#8221;sfdc.streamingapi&#8221;, params:{topic:&#8221;\/topic\/myPushTopicName&#8221;}}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba2\u9605Streaming API\u4e8b\u4ef6<\/h3>\n\n\n\n<p>\u6b64\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528subscribe\u65b9\u6cd5\uff0c\u4ee5\u4fbfcanvas\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u8ba2\u9605Streaming API\u4e8b\u4ef6\u3002\u8ba2\u9605\u4e8b\u4ef6\u65f6\uff0c\u53ef\u4ee5\u8c03\u7528\u7528\u4e8e\u8ba2\u9605\u753b\u5e03\u5e94\u7528\u4e8b\u4ef6\u7684\u6807\u51c6sfdc.canvas.client.subscribe\u65b9\u6cd5\u3002\u8c03\u7528subscribe\u65b9\u6cd5\u65f6\uff0c\u5fc5\u987b\u4f20\u5165\u5ba2\u6237\u7aef\u548cStreaming API\u4e8b\u4ef6\u3002\u53ea\u6709\u6253\u5f00\u5e76\u8ba2\u9605\u8be5\u4e8b\u4ef6\u7684\u753b\u5e03\u5e94\u7528\u624d\u80fd\u63a5\u6536\u6d41\u5f0fAPI\u901a\u77e5\u3002<\/p>\n\n\n\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0conComplete\u65b9\u6cd5\u6307\u5b9a\u5728\u4ee3\u7801\u6210\u529f\u8ba2\u9605\u4e8b\u4ef6\u540e\u8fd0\u884c\u7684\u51fd\u6570\u3002\u8be5<br\/>\nonData\u65b9\u6cd5\u6307\u5b9a\u4e8b\u4ef6\u6536\u5230Streaming API\u901a\u77e5\u65f6\u8fd0\u884c\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\/\/ Subscribe to Streaming API events.<br\/>\n\/\/ The PushTopic to subscribe to must be passed in.<br\/>\n\/\/ The &#8216;onComplete&#8217; method may be defined,<br\/>\n\/\/ and will fire when the subscription is complete. <br\/>\nSfdc.canvas(function() {<br\/>\nsr = JSON.parse(&#8216;&lt;%=signedRequestJson%>&#8217;);<br\/>\nvar handler1 = function(){ console.log(&#8220;onData done&#8221;);},<br\/>\nhandler2 = function(){ console.log(&#8220;onComplete done&#8221;);}; <br\/>\nSfdc.canvas.client.subscribe(sr.client,<br\/>\n{name : &#8216;sfdc.streamingapi&#8217;, params:{topic:&#8221;\/topic\/InvoiceStatements&#8221;}}, onData : handler1, onComplete : handler2}<br\/>\n);<br\/>\n});<\/p>\n\n\n\n<p>\u8c03\u7528subscribe\u65b9\u6cd5\u65f6\uff0c\u4f1a\u8fdb\u884cREST\u8c03\u7528\u4ee5\u786e\u4fdd\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u5177\u6709\u8fde\u63a5\u5230Streaming API\u6240\u9700\u7684OAuth\u8303\u56f4\u3002\u56e0\u6b64\uff0c\u6bcf\u6b21\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605Streaming API\u4e8b\u4ef6\u65f6\uff0c\u90fd\u4f1a\u4f7f\u7528\u4e00\u4e2aAPI\u8c03\u7528\uff0c\u5e76\u6839\u636e\u7ec4\u7ec7\u7684API\u8bf7\u6c42\u603b\u9650\u5236\u8fdb\u884c\u8ba1\u6570\u3002 canvas\u5e94\u7528\u7a0b\u5e8f\u81f3\u5c11\u9700\u8981\u201c\u8bbf\u95ee\u548c\u7ba1\u7406\u60a8\u7684\u6570\u636e\uff08API\uff09\u201dOAuth\u8303\u56f4\u624d\u80fd\u8fde\u63a5\u5230Streaming API\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u5bf9subscribe\u65b9\u6cd5\u7684\u8c03\u7528\u6210\u529f\uff0c\u5219\u8c03\u7528onComplete\u65b9\u6cd5\uff0c\u5176\u6709\u6548\u8d1f\u8f7d\u4e3a<br\/>\n{\u6210\u529f\uff1a\u771f\u7684\uff0c\u62c9\u624b\uff1a\u62c9\u624b}\u3002\u53e5\u67c4\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u8981\u8ba2\u9605\u7684Streaming API\u901a\u9053\u7684\u540d\u79f0\uff0c\u800csubscriptionId\u662f\u4e00\u4e2a\u5305\u542b\u552f\u4e00ID\u7684\u6574\u6570\u3002\u4f8b\u5982\uff0c[\u201c\/ topics \/ InvoiceStatements\u201d\uff0csubscriptionId]\u3002\u5982\u679c\u5bf9subscribe\u65b9\u6cd5\u7684\u8c03\u7528\u5931\u8d25\uff0c\u5219\u8c03\u7528onComplete\u65b9\u6cd5\uff0c\u5176\u6709\u6548\u8d1f\u8f7d\u4e3a{success\uff1afalse\uff0cerrorMessage\uff1amsg}\u3002 msg\u662f\u4e00\u4e2a\u5305\u542b\u9519\u8bef\u539f\u56e0\u7684\u5b57\u7b26\u4e32\u3002<br\/>\n\u8981\u63a5\u6536Streaming API\u901a\u77e5\uff0c\u60a8\u5fc5\u987b\u521b\u5efaPushTopic\u5b9a\u4e49\u7684\u901a\u9053\u3002\u6709\u5173\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605Streaming API\u5f00\u53d1\u4eba\u5458\u6307\u5357\u4e2d\u7684\u201c\u6b65\u9aa42\uff1a\u521b\u5efaPushTopic\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53d6\u6d88\u8ba2\u9605Streaming API\u4e8b\u4ef6<\/h3>\n\n\n\n<p>\u6b64\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8c03\u7528unsubscribe\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u53d6\u6d88\u8ba2\u9605Streaming API\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728Canvas\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8c03\u8bd5<\/h2>\n\n\n\n<p>\u60a8\u5fc5\u987b\u4f7f\u7528Chrome\uff0cFirefox\u6216Safari\u624d\u80fd\u6267\u884c\u8fd9\u4e9b\u6b65\u9aa4\u3002<br\/>\n\u4f7f\u7528Canvas SDK\u65f6\uff0c\u60a8\u53ef\u4ee5\u542f\u7528\u8c03\u8bd5\u6a21\u5f0f\u4ee5\u7b80\u5316\u6545\u969c\u6392\u9664\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u5728\u6d4f\u89c8\u5668\u4e2d\u6253\u5f00\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u6253\u5f00\u63a7\u5236\u53f0\u3002<br\/><\/li><li>\u952e\u5165Sfdc.canvas.console.enable\uff08\uff09;\u5e76\u6309\u56de\u8f66\u952e\u3002<br\/><\/li><li>\u5237\u65b0\u6d4f\u89c8\u5668\u3002<\/li><\/ol>\n\n\n\n<p>Use data from this screen to debug canvas-related problems.<\/p>\n\n\n\n<p>\u4f7f\u7528\u6b64\u5c4f\u5e55\u4e2d\u7684\u6570\u636e\u6765\u8c03\u8bd5\u4e0e\u753b\u5e03\u76f8\u5173\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728Canvas App\u4e2d\u4f7f\u7528e <strong>&lt;select> <\/strong>\u6807\u7b7e<\/h2>\n\n\n\n<p>\u5982\u679c\u60a8\u5728\u753b\u5e03Web\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528HTML &lt;select>\u6807\u7b7e\u5e76\u6253\u7b97\u5728Salesforce\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\uff0c\u8bf7\u8bb0\u4f4f\uff0c\u67d0\u4e9b\u8bbe\u5907\u4e0a\u7684\u884c\u4e3a\u53ef\u80fd\u65e0\u6cd5\u9884\u6d4b\u3002 \u8003\u8651\u4f7f\u7528jQuery\u6216CSS\u66ff\u4ee3\u65b9\u6cd5\u6765\u4f7f\u7528&lt;select>\u3002<\/p>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u5b66\u4e60\u76ee\u6807 \u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\u4e86\u89e3\u5230\uff1a \u5f15\u7528Canvas SDK \u9a8c\u8bc1 \u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u83b7\u53d6\u4e0a\u4e0b\u6587 \u8de8\u57df &hellip; <a href=\"http:\/\/www.ponybai.com\/?p=1651\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u753b\u5e03\u5f00\u53d1\uff084\uff09Canvas SDK<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[],"class_list":["post-1651","post","type-post","status-publish","format-standard","hentry","category-canvas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u753b\u5e03\u5f00\u53d1\uff084\uff09Canvas SDK - \u767d\u767d\u968f\u7b14<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.ponybai.com\/?p=1651\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u753b\u5e03\u5f00\u53d1\uff084\uff09Canvas SDK - \u767d\u767d\u968f\u7b14\" \/>\n<meta property=\"og:description\" content=\"\u5b66\u4e60\u76ee\u6807 \u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\u4e86\u89e3\u5230\uff1a \u5f15\u7528Canvas SDK \u9a8c\u8bc1 \u5728\u60a8\u7684\u753b\u5e03\u5e94\u7528\u7a0b\u5e8f\u4e2d\u83b7\u53d6\u4e0a\u4e0b\u6587 \u8de8\u57df &hellip; 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