{"id":4156,"date":"2024-03-02T14:48:21","date_gmt":"2024-03-02T06:48:21","guid":{"rendered":"http:\/\/www.ponybai.com\/?p=4156"},"modified":"2023-12-06T15:10:49","modified_gmt":"2023-12-06T07:10:49","slug":"visualforce%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=4156","title":{"rendered":"Visualforce\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"\n<p>\u4e86\u89e3\u6539\u8fdb Visualforce \u9875\u9762\u7684\u7b56\u7565\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u66f4\u6539\u4e86\u975e\u5305\u5bb9\u6027\u6761\u6b3e\uff0c\u4ee5\u7b26\u5408\u6211\u4eec\u516c\u53f8\u7684\u5e73\u7b49\u4ef7\u503c\u89c2\u3002 \u6211\u4eec\u4fdd\u7559\u4e86\u67d0\u4e9b\u6761\u6b3e\uff0c\u4ee5\u907f\u514d\u5bf9\u5ba2\u6237\u5b9e\u65bd\u4ea7\u751f\u4efb\u4f55\u5f71\u54cd\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u63d0\u9ad8 Visualforce \u6027\u80fd\u7684\u6700\u4f73\u5b9e\u8df5 \u4e86\u89e3\u63d0\u9ad8 Visualforce \u9875\u9762\u6027\u80fd<\/strong><br>\u7684\u7b56\u7565\u3002<\/li>\n\n\n\n<li><strong>\u8bbf\u95ee\u7ec4\u4ef6 ID \u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/li>\n\n\n\n<li><strong>\u9759\u6001\u8d44\u6e90\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/li>\n\n\n\n<li><strong>\u63a7\u5236\u5668\u548c\u63a7\u5236\u5668\u6269\u5c55\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/li>\n\n\n\n<li><strong>\u4f7f\u7528\u7ec4\u4ef6\u5206\u9762\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/li>\n\n\n\n<li><strong>\u9875\u9762\u5757\u7ec4\u4ef6\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/li>\n\n\n\n<li><strong>\u6e32\u67d3 PDF \u6587\u4ef6\u7684<\/strong><br>\u6700\u4f73\u5b9e\u8df5 \u5c06 Visualforce \u9875\u9762\u5448\u73b0\u4e3a PDF \u6587\u4ef6\u662f\u5171\u4eab\u6709\u5173 Salesforce 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class=\"wp-block-list\">\n<li><strong>\u8c03\u67e5\u6027\u80fd\u95ee\u9898<\/strong><br>Visualforce \u65e8\u5728\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u4e0e\u6807\u51c6 Salesforce \u9875\u9762\u7684\u529f\u80fd\u3001\u884c\u4e3a\u548c\u6027\u80fd\u76f8\u5339\u914d\u7684\u80fd\u529b\u3002\u5982\u679c\u60a8\u7684\u7528\u6237\u9047\u5230\u5ef6\u8fdf\u3001\u610f\u5916\u884c\u4e3a\u6216\u4e13\u95e8\u9488\u5bf9 Visualforce \u7684\u5176\u4ed6\u95ee\u9898\uff0c\u8bf7\u9996\u5148\u8c03\u67e5\u95ee\u9898\u7684\u53ef\u80fd\u6765\u6e90\u3002<\/li>\n\n\n\n<li>\u9075\u5faa Visualforce 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\u5e76\u53d1\u8bf7\u6c42<\/strong><br>\u662f\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u4efb\u52a1\uff0c\u53ef\u4ee5\u963b\u6b62\u5176\u4ed6\u5f85\u5904\u7406\u7684\u4efb\u52a1\u3002\u82e5\u8981\u51cf\u5c11\u5ef6\u8fdf\uff0c\u8bf7\u5c3d\u53ef\u80fd\u5c06\u4ee3\u7801\u79fb\u52a8\u5230\u5f02\u6b65\u4ee3\u7801\u5757\uff0c\u5e76\u786e\u4fdd\u4f7f\u7528\u8be5\u7ec4\u4ef6\u7684\u64cd\u4f5c\u65b9\u6cd5\u662f\u8f7b\u91cf\u7ea7\u7684\u3002<samp>&lt;apex:actionPoller><\/samp><\/li>\n\n\n\n<li>\u7f16\u5199\u9ad8\u6548\u7684 Apex \u548c SOQL \u8981\u63d0\u9ad8 Visualforce \u9875\u9762\u7684\u6574\u4f53\u6027\u80fd\uff0c\u8bf7\u7f16\u5199\u9ad8\u6548\u7684 Apex\u00a0<strong>\u548c SOQL<\/strong><br>\u3002<\/li>\n\n\n\n<li><strong>\u7f16\u5199\u9ad8\u6548\u7684 Getter<\/strong>\u00a0\u65b9\u6cd5 Visualforce \u8bf7\u6c42\u8bc4\u4f30\u8868\u8fbe\u5f0f\u3001\u64cd\u4f5c\u5c5e\u6027\u548c\u5176\u4ed6\u65b9\u6cd5<br>\u8c03\u7528\u3002\u8868\u5355\u63d0\u4ea4\u7b49\u8bf7\u6c42\u53ef\u4ee5\u591a\u6b21\u8c03\u7528\u7c7b\u4e2d\u7684 getter \u65b9\u6cd5\u3002\u4f7f\u7528\u66f4\u9ad8\u6548\u7684 getter \u65b9\u6cd5\uff0c\u53ef\u4ee5\u9632\u6b62\u5bf9\u540c\u4e00\u8bb0\u5f55\u8fdb\u884c\u4e0d\u5fc5\u8981\u7684\u67e5\u627e\u3002<\/li>\n\n\n\n<li>\u4f18\u5316\u5217\u8868\u548c\u8868\u683c \u8981\u63d0\u9ad8\u5305\u542b<strong>\u5217\u8868\u548c\u8868\u683c<\/strong><br>\u7684 Visualforce \u9875\u9762\u7684\u6027\u80fd\uff0c\u8bf7\u9650\u5236\u6bcf\u9875\u663e\u793a\u7684\u6570\u636e\u91cf\uff0c\u5e76\u51cf\u5c11\u6bcf\u4e2a\u8868\u683c\u7684\u53ef\u7f16\u8f91\u5b57\u6bb5\u6570\u3002\u60a8\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5206\u9875\u6216\u5c06\u7ec4\u4ef6\u66ff\u6362\u4e3a\u9759\u6001 HTML \u8868\u3002<samp>&lt;apex:pageBlockTable><\/samp><\/li>\n\n\n\n<li><strong>\u4f18\u5316\u89c6\u56fe\u72b6\u6001<\/strong><br>\u4e3a\u4e86\u7ef4\u62a4 Visualforce \u9875\u9762\u7684\u89c6\u56fe\u72b6\u6001\uff0cLightning Platform \u5c06\u7ec4\u4ef6\u3001\u5b57\u6bb5\u503c\u548c\u63a7\u5236\u5668\u7684\u72b6\u6001\u4f5c\u4e3a\u52a0\u5bc6\u5b57\u7b26\u4e32\u5b58\u50a8\u5728\u9690\u85cf\u7684\u8868\u5355\u5143\u7d20\u4e2d\u3002\u89c6\u56fe\u72b6\u6001\u7684\u9650\u5236\u4e3a 170 KB\u3002\u5927\u578b\u89c6\u56fe\u72b6\u6001\u9700\u8981\u66f4\u957f\u7684\u5904\u7406\u65f6\u95f4\uff0c\u5305\u62ec\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u65f6\u95f4\uff0c\u4ee5\u53ca\u52a0\u5bc6\u548c\u89e3\u5bc6\u65f6\u95f4\u3002\u5982\u679c\u51cf\u5c0f\u89c6\u56fe\u72b6\u6001\u5927\u5c0f\uff0c\u5219\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u66f4\u5feb\uff0c\u505c\u987f\u9891\u7387\u66f4\u4f4e\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316<\/strong>\u00a0HTML \u5728 Visualforce \u9a8c\u8bc1 HTML \u7684\u670d\u52a1\u5668\u7aef\uff0c\u4f18\u5316\u7684 HTML<br>\u63d0\u9ad8\u4e86\u5904\u7406\u6548\u7387\u3002\u5728\u5ba2\u6237\u7aef\uff0c\u4f18\u5316\u7684 HTML \u4f7f Visualforce \u9875\u9762\u5728\u7528\u6237\u6d4f\u89c8\u5668\u4e2d\u7684\u54cd\u5e94\u901f\u5ea6\u66f4\u5feb\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316 CSS<\/strong>\u00a0\u4e3a\u786e\u4fdd\u9ad8\u6548\u4ea4\u4ed8\u7ed9\u5ba2\u6237\u7aef\uff0c\u8bf7\u5728 Visualforce \u9875\u9762\u4e2d\u4f18\u5316 CSS<br>\u3002\u4f18\u5316\u7684 CSS \u8fd8\u6539\u8fdb\u4e86\u7f13\u5b58\u5e76\u51cf\u5c11\u4e86\u52a0\u8f7d\u65f6\u95f4\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316<\/strong>\u00a0JavaScript \u4e3a\u786e\u4fdd\u9ad8\u6548\u4ea4\u4ed8\u7ed9\u5ba2\u6237\u7aef\uff0c\u8bf7\u5728 Visualforce \u9875\u9762\u4e2d\u4f18\u5316 JavaScript \u4f18\u5316\u7684 JavaScript<br>\u8fd8\u6539\u8fdb\u4e86\u7f13\u5b58\u5e76\u7f29\u77ed\u4e86\u52a0\u8f7d\u65f6\u95f4\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316\u56fe\u50cf \u56fe\u50cf<\/strong><br>\u901a\u5e38\u662f\u7f51\u9875\u4e2d\u6700\u5927\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u56e0\u6b64\u5b83\u4eec\u4f1a\u663e\u8457\u5f71\u54cd Visualforce \u9875\u9762\u7684\u6027\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u9632\u6b62\u5b57\u6bb5\u4ece\u9875\u9762\u4e0a<\/strong><br>\u6389\u843d \u5305\u542b\u8bb8\u591a\u5b57\u6bb5\u7684 Visualforce \u9875\u9762\uff08\u5c24\u5176\u662f\u90a3\u4e9b\u5177\u6709\u5927\u578b\u6587\u672c\u533a\u57df\u5b57\u6bb5\u6216\u4e0e\u5176\u4ed6\u5b9e\u4f53\u5177\u6709\u4e3b\u4ece\u5173\u7cfb\u7684\u9875\u9762\uff09\u53ef\u80fd\u65e0\u6cd5\u663e\u793a\u8bf7\u6c42\u7684\u6bcf\u4e2a\u5b57\u6bb5\u3002\u7531\u4e8e\u6279\u5904\u7406\u9650\u5236\u548c\u5bf9\u8fd4\u56de\u7684\u6570\u636e\u5927\u5c0f\u7684\u9650\u5236\uff0c\u53ef\u80fd\u4f1a\u5220\u9664\u6570\u636e\u3002\u4e3a\u9632\u6b62\u5b57\u6bb5\u4ece\u9875\u9762\u4e0a\u5220\u9664\uff0c\u8bf7\u51cf\u5c11\u663e\u793a\u7684\u5b57\u6bb5\u6570\u3002\u6216\u8005\uff0c\u521b\u5efa\u4e00\u4e2a\u63a7\u5236\u5668\u6269\u5c55\uff0c\u8be5\u6269\u5c55\u53ef\u4ee5\u67e5\u8be2\u5b50\u8bb0\u5f55\u5e76\u5728\u76f8\u5173\u5217\u8868\u4e2d\u663e\u793a\u7ed3\u679c\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u8bbe\u7f6e\u4e86\u5c5e\u6027\u7684<strong>\u5373\u65f6\u5c5e\u6027 Visualforce<\/strong><br>\u7ec4\u4ef6\u6765\u6267\u884c\u64cd\u4f5c\uff0c\u800c\u65e0\u9700\u5904\u7406\u9875\u9762\u4e0a\u5173\u8054\u5b57\u6bb5\u7684\u4efb\u4f55\u9a8c\u8bc1\u89c4\u5219\u3002\u4ec5\u5f53\u7ec4\u4ef6\u6267\u884c\u5728\u5b8c\u6210\u540e\u5bfc\u822a\u79bb\u5f00\u9875\u9762\u7684\u64cd\u4f5c\u65f6\uff0c\u624d\u5e94\u4f7f\u7528\u6b64\u5c5e\u6027\u3002<samp>immediatetrue<\/samp><\/li>\n\n\n\n<li>Visualforce \u6027\u80fd\u6848\u4f8b\u7814\u7a76<br>\u8981\u4e86\u89e3\u00a0<strong>Visualforce \u6027\u80fd<\/strong>\u4f18\u5316\u5982\u4f55\u534f\u540c\u5de5\u4f5c\uff0c\u8bf7\u7814\u7a76\u5982\u4f55\u51cf\u5c11\u5177\u6709\u5927\u578b\u6570\u636e\u7f51\u683c\u548c\u590d\u6742\u5bf9\u8c61\u5c42\u6b21\u7ed3\u6784\u7684\u9875\u9762\u7684\u52a0\u8f7d\u65f6\u95f4\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c03\u67e5\u6027\u80fd\u95ee\u9898<\/h2>\n\n\n\n<p>Visualforce \u65e8\u5728\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u5339\u914d \u6807\u51c6 Salesforce \u9875\u9762\u7684\u529f\u80fd\u3001\u884c\u4e3a\u548c\u6027\u80fd\u3002\u5982\u679c\u60a8\u7684\u7528\u6237\u4f53\u9a8c \u5ef6\u8fdf\u3001\u610f\u5916\u884c\u4e3a\u6216\u4e13\u95e8\u9488\u5bf9 Visualforce \u7684\u5176\u4ed6\u95ee\u9898\uff0c\u8bf7\u9996\u5148\u8fdb\u884c\u8c03\u67e5 \u95ee\u9898\u7684\u53ef\u80fd\u6839\u6e90\u3002<\/p>\n\n\n\n<p>\u9a8c\u8bc1\u60a8\u7684\u7f51\u9875\u662f\u5426\u9075\u5faa\u7f51\u9875\u8bbe\u8ba1\u7684\u4e00\u822c\u6700\u4f73\u5b9e\u8df5\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JavaScript \u548c CSS \u7f29\u5c0f\u3002<\/li>\n\n\n\n<li>\u7f51\u7edc\u56fe\u50cf\u4f18\u5316\u3002<\/li>\n\n\n\n<li>\u5c3d\u53ef\u80fd\u907f\u514d\u4f7f\u7528 iframe\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u901a\u8fc7\u6d4b\u8bd5\u8c03\u67e5 Visualforce \u6027\u80fd<\/h2>\n\n\n\n<p>\u4e3a\u786e\u4fdd\u95ee\u9898\u4e0d\u4ec5\u9650\u4e8e\u5355\u4e2a\u7528\u6237\u7684\u8ba1\u7b97\u673a\uff0c\u8bf7\u6d4b\u8bd5\u60a8\u7684 Visualforce \u9875\u9762 \u5728\u591a\u53f0\u673a\u5668\u4e0a\uff0c\u4f7f\u7528\u591a\u4e2a\u6d4f\u89c8\u5668\u3002\u68c0\u67e5\u5176\u4ed6Salesforce\u7684\u52a0\u8f7d\u65f6\u95f4 \u9875\u9762\u548c\u5176\u4ed6\u7f51\u7ad9\u3002\u5982\u679c Salesforce \u9875\u9762\u52a0\u8f7d\u7f13\u6162\uff0c\u8bf7\u68c0\u67e5 Salesforce \u670d\u52a1\u5668\u4f4d\u4e8e\u00a0https:\/\/status.salesforce.com\u3002\u5982\u679c\u6240\u6709\u7f51\u9875\u52a0\u8f7d\u7f13\u6162\uff0c\u8bf7\u68c0\u67e5\u60a8\u7684\u7f51\u7edc \u914d\u7f6e\u3002<\/p>\n\n\n\n<p>\u6d4b\u8bd5\u5e76\u5e2e\u52a9\u963b\u6b62\u6027\u80fd \u56de\u5f52\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 Lightning \u5e73\u53f0\u5f00\u53d1\u4eba\u5458\u63a7\u5236\u53f0\u8c03\u67e5 \u9875\u9762\u4e0a\u7684 Visualforce \u6807\u8bb0\u548c\u5176\u4ed6 Lightning Platform \u529f\u80fd\u3002\u4e0e\u5f00\u53d1\u4eba\u5458 \u63a7\u5236\u53f0\u4e2d\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90\u7684\u5185\u5bb9\u5e76\u8bc6\u522b\u4ee3\u7801\u4e2d\u7684\u95ee\u9898\u3002\u8fd9 \u5f00\u53d1\u4eba\u5458\u63a7\u5236\u53f0\u6709\u4e00\u4e2a\u8c03\u8bd5\u65e5\u5fd7\uff0c\u5176\u4e2d\u8be6\u7ec6\u8bf4\u660e\u4e86\u8bf7\u6c42\u4f5c\u4e3a\u670d\u52a1\u5668\u7684\u6027\u80fd \u5904\u7406\u5b83\u4eec\u3002\u8be6\u7ec6\u4fe1\u606f\u663e\u793a\u65b9\u6cd5\u3001\u67e5\u8be2\u3001\u5de5\u4f5c\u6d41\u3001 \u6807\u6ce8\u3001DML\u3001\u9a8c\u8bc1\u3001\u89e6\u53d1\u5668\u548c\u9875\u9762\uff08\u6309\u7c7b\u578b\u548c\u65f6\u95f4\uff09\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 Selenium \u7b49\u5de5\u5177\u81ea\u52a8\u6d4b\u8bd5\u7e41\u7410\u6216\u590d\u6742\u7684\u5de5\u4f5c\u6d41\u7a0b\uff0c\u8fd9\u4e9b\u5de5\u4f5c\u6d41\u7a0b\u53ef\u4ee5 \u4ea7\u751f\u4e0d\u4e00\u81f4\u7684\u7ed3\u679c\u3002\u81ea\u52a8\u5316\u6d4b\u8bd5\u53ef\u4ee5\u70b9\u51fb\u94fe\u63a5\u3001\u8f93\u5165\u548c\u68c0\u7d22\u6570\u636e\u3001 \u5e76\u8bb0\u5f55\u6267\u884c\u65f6\u95f4\uff0c\u4ee5\u53d1\u73b0\u624b\u52a8\u6d4b\u8bd5\u53ef\u4ee5\u53d1\u73b0\u7684\u74f6\u9888\u548c\u7f3a\u9677 \u601d\u5ff5\u3002<\/li>\n\n\n\n<li>\u5728\u5c3d\u53ef\u80fd\u591a\u7684\u6d4f\u89c8\u5668\u548c\u5c3d\u53ef\u80fd\u591a\u7684\u7248\u672c\u4e2d\u8fdb\u884c\u6d4b\u8bd5\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u5927\u91cf\u6570\u636e\u8fdb\u884c\u6d4b\u8bd5\u3002\u8fd9\u4e9b\u6d4b\u8bd5\u53ef\u4ee5\u63ed\u793a\u6570\u636e\u504f\u659c\u7684\u573a\u666f\uff0c\u5176\u4e2d\u67d0\u4e9b \u7528\u6237\u6709\u6743\u8bbf\u95ee\u8fc7\u591a\u7684\u8bb0\u5f55\u3002\u907f\u514d\u65e0\u754c\u6570\u636e\uff0c\u5b9e\u73b0\u5206\u9875\uff0c\u4ee5\u53ca \u4ec5\u663e\u793a\u76f8\u5173\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 HTML\u3001CSS \u548c JavaScript \u5206\u6790\u548c\u8c03\u8bd5\u5de5\u5177\u63d0\u4f9b\u5bf9\u7f51\u7edc\u7684\u6d1e\u5bdf \u5ef6\u8fdf\u3001\u52a0\u8f7d\u65f6\u95f4\u548c\u4ee3\u7801\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u5728\u771f\u5b9e\u7684\u79fb\u52a8\u8bbe\u5907\u4e0a\u8fdb\u884c\u6d4b\u8bd5\uff0c\u4ee5\u53d1\u73b0\u5f00\u53d1\u4eba\u5458\u4e0d\u660e\u663e\u7684\u6027\u80fd\u95ee\u9898 \u673a\u5668\u3002\u7531\u4e8e\u5904\u7406\u5668\u901f\u5ea6\u8f83\u6162\uff0c\u79fb\u52a8\u5ba2\u6237\u7aef\u5177\u6709\u4e0d\u540c\u7684\u6027\u80fd\u914d\u7f6e\u6587\u4ef6\uff0c \u5185\u5b58\u6709\u9650\uff0c\u7f51\u7edc\u8fde\u63a5\u901f\u5ea6\u8f83\u6162\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p>\u5c06\u00a0WebPageTest\u00a0\u7b49\u5de5\u5177\u7528\u4e8e\u521d\u59cb\u79fb\u52a8\u6d4f\u89c8\u5668 \u6d4b\u8bd5\uff0c\u4f46\u4f7f\u7528\u771f\u5b9e\u8bbe\u5907\u8fdb\u884c\u6df1\u5165\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9075\u5faa Visualforce \u8bbe\u8ba1\u51c6\u5219<\/h2>\n\n\n\n<p>\u8981\u4f18\u5316 Visualforce \u9875\u9762\u6027\u80fd\uff0c\u8bf7\u8bbe\u8ba1\u4ee5\u4efb\u52a1\u4e3a\u4e2d\u5fc3\u7684\u9875\u9762\uff0c\u8bf7\u4f7f\u7528\u6807\u51c6\u5bf9\u8c61 \u548c\u58f0\u660e\u6027\u529f\u80fd\uff0c\u5e76\u6241\u5e73\u5316\u7ec4\u4ef6\u5c42\u6b21\u7ed3\u6784\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8bbe\u8ba1\u4ee5\u4efb\u52a1\u4e3a\u4e2d\u5fc3\u7684\u9875\u9762<\/h2>\n\n\n\n<p>\u56f4\u7ed5\u7279\u5b9a\u4efb\u52a1\u8bbe\u8ba1\u9875\u9762\uff0c\u5177\u6709\u903b\u8f91\u5de5\u4f5c\u6d41\u548c\u6e05\u6670\u7684\u5bfc\u822a \u4efb\u52a1\u4e4b\u95f4\u3002\u4e0d\u8981\u7528\u529f\u80fd\u548c\u6570\u636e\u4f7f\u9875\u9762\u8fc7\u8f7d\u3002Visualforce \u9875\u9762 \u5177\u6709\u65e0\u754c\u6570\u636e\u6216\u5927\u91cf\u7ec4\u4ef6\u3001\u884c\u548c\u5b57\u6bb5\u7684\u5dee \u53ef\u7528\u6027\u548c\u6027\u80fd\u3002\u5b83\u4eec\u53ef\u80fd\u4f1a\u8fbe\u5230\u89c6\u56fe\u72b6\u6001\u548c\u5806\u7684\u8c03\u63a7\u5668\u9650\u5236 \u5927\u5c0f\uff0c\u5e76\u4e14\u5b83\u4eec\u53ef\u80fd\u4f1a\u8d85\u8fc7\u8bb0\u5f55\u68c0\u7d22\u9650\u5236\u548c\u9875\u9762\u5927\u5c0f\u9650\u5236\u3002\u63a8 \u56de\u5230\u5305\u542b\u975e\u5fc5\u8981\u529f\u80fd\u548c\u6784\u5efa\u539f\u578b\u7684\u8bf7\u6c42 \u9a8c\u8bc1\u6027\u80fd\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c3d\u53ef\u80fd\u4f7f\u7528\u6807\u51c6\u529f\u80fd<\/h2>\n\n\n\n<p>Lightning Platform \u7684\u7f16\u7a0b\u529f\u80fd\u4f7f\u5176\u6613\u4e8e\u81ea\u5b9a\u4e49 \u529f\u80fd\u6027\u3002\u4f46\u6807\u51c6\u5bf9\u8c61\u548c\u58f0\u660e\u6027\u529f\u80fd\uff08\u5982\u5ba1\u6279\uff09 \u6d41\u7a0b\u3001\u6d41\u7a0b\u548c\u5de5\u4f5c\u6d41\u89c4\u5219 &#8211; \u5df2\u7ecf\u9ad8\u5ea6\u4f18\u5316\uff0c\u4f46\u5c1a\u672a\u4f18\u5316 \u8ba1\u5165\u5927\u591a\u6570\u8c03\u63a7\u5668\u9650\u5236\u3002\u6807\u51c6\u529f\u80fd\u7b80\u5316\u4e86\u6570\u636e\u6a21\u578b\uff0c\u5e76\u4e14\u7ecf\u5e38 \u51cf\u5c11\u4e1a\u52a1\u6d41\u7a0b\u6240\u9700\u7684 Visualforce \u9875\u9762\u6570\u91cf\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6241\u5e73\u5316\u7ec4\u4ef6\u5c42\u6b21\u7ed3\u6784<\/h2>\n\n\n\n<p>\u6241\u5e73\u7ec4\u4ef6\u7ed3\u6784\u7684\u5904\u7406\u901f\u5ea6\u6bd4\u6df1\u5c42\u5206\u5c42\u7ec4\u4ef6\u5feb \u7ed3\u6784\u3002\u9650\u5236\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u7684\u5d4c\u5957\u4ee5\u8fdb\u884c\u903b\u8f91\u7ec4\u7ec7 \u529f\u80fd\uff0c\u5e76\u4e14\u4ec5\u5f53\u8be5\u903b\u8f91\u65e8\u5728\u91cd\u7528\u65f6\u624d\u4f7f\u7528\u81ea\u5b9a\u4e49\u7ec4\u4ef6 \u6216\u5305\u542b\u5728\u53e6\u4e00\u4e2a\u5305\u4e2d\u3002\u5e9e\u5927\u7684\u5c42\u6b21\u7ed3\u6784\u589e\u5f3a\u4e86\u670d\u52a1\u5668\u7aef\u7ba1\u7406 \u548c\u5904\u7406\u65f6\u95f4\uff0c\u56e0\u4e3a Visualforce \u5728\u6574\u4e2a\u8fc7\u7a0b\u4e2d\u7ef4\u62a4\u4e0a\u4e0b\u6587 \u8bf7\u6c42\u3002\u7ec4\u4ef6\u5c42\u6b21\u7ed3\u6784\u7684\u6bcf\u6b21\u904d\u5386\u90fd\u4f1a\u6d88\u8017\u65f6\u95f4\u548c\u8d44\u6e90\u3002\u5de8\u5927 \u5c42\u6b21\u7ed3\u6784\u8fd8\u4f7f\u9875\u9762\u9762\u4e34\u8fbe\u5230\u5806\u5927\u5c0f\u8c03\u63a7\u5668\u9650\u5236\u7684\u98ce\u9669\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u63a7\u5236\u6570\u636e\u5927\u5c0f<\/h2>\n\n\n\n<p>Visualforce \u9875\u9762\u7684\u6807\u51c6\u54cd\u5e94\u9650\u5236\u4e3a 15 MB\uff0c\u8f83\u5c0f\u7684\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u66f4\u5feb \u6bd4\u8f83\u5927\u7684\u9875\u9762\u3002\u82e5\u8981\u6700\u5927\u7a0b\u5ea6\u5730\u51cf\u5c11\u52a0\u8f7d\u65f6\u95f4\uff0c\u8bf7\u9650\u5236\u6bcf\u4e2a\u9875\u9762\u7684\u6570\u636e\u91cf \u663e\u793a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b5b\u9009\u67e5\u8be2\u7ed3\u679c<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u7b5b\u9009\u5668\u9650\u5236 Salesforce \u5bf9\u8c61\u67e5\u8be2\u8bed\u8a00 \uff08SOQL\uff09 \u8c03\u7528\u7684\u6570\u636e\uff0c\u4ee5\u53ca Apex \u63a7\u5236\u5668\u8fd4\u56de\u3002\u4f8b\u5982\uff0c\u5728\u5b50\u53e5\u4e2d\u4f7f\u7528\u8bed\u53e5\u3002\u8fd8\u53ef\u4ee5\u5220\u9664 null \u67e5\u8be2\u7ed3\u679c\u3002<samp>AND<\/samp><samp>WHERE<\/samp><\/li>\n\n\n\n<li>\u521b\u5efa Apex \u63a7\u5236\u5668\u65f6\uff0c\u8bf7\u4f7f\u7528\u5173\u952e\u5b57\u4ec5\u68c0\u7d22\u7528\u6237\u53ef\u4ee5\u8bbf\u95ee\u7684\u8bb0\u5f55\u3002<samp>with sharing<\/samp><\/li>\n\n\n\n<li>\u9996\u5148\u5728 SOQL \u4e2d\u8fc7\u6ee4\uff0c\u7136\u540e\u5728 Apex \u4e2d\u8fc7\u6ee4\uff0c\u6700\u540e\u5728 Visualforce \u4e2d\u8fc7\u6ee4\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f7f\u7528\u5206\u9875<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5177\u6709\u65e0\u9650\u6570\u636e\u7684\u9875\u9762\u53ef\u80fd\u4f1a\u5bfc\u81f4\u52a0\u8f7d\u65f6\u95f4\u5ef6\u957f\uff0c\u8fbe\u5230\u8c03\u63a7\u5668\u9650\u5236\uff0c\u5e76\u6210\u4e3a \u968f\u7740\u6570\u636e\u96c6\u7684\u589e\u957f\u800c\u4e0d\u53ef\u7528\u3002\u82e5\u8981\u9632\u6b62\u5217\u8868\u89c6\u56fe\u663e\u793a\u672a\u7ed1\u5b9a\u7684\u6570\u636e\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a \u4f7f\u7528\u5217\u8868\u63a7\u5236\u5668\u5b9e\u73b0\u5206\u9875\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5217\u8868\u63a7\u5236\u5668\u8fd4\u56de 20 \u6bcf\u9875\u8bb0\u5f55\u6570\uff0c\u4f46\u60a8\u53ef\u4ee5\u5c06\u5217\u8868\u89c6\u56fe\u914d\u7f6e\u4e3a\u4e00\u6b21\u6700\u591a\u663e\u793a 100 \u6761\u8bb0\u5f55\u3002 \u8981\u63a7\u5236\u6bcf\u4e2a\u9875\u9762\u663e\u793a\u7684\u8bb0\u5f55\u6570\uff0c\u8bf7\u4f7f\u7528\u63a7\u5236\u5668\u6269\u5c55\u5c06 .<samp>pageSize<\/samp><\/li>\n\n\n\n<li>\u4f7f\u7528 SOQL \u5b50\u53e5\u7f16\u5199\u903b\u8f91 \u5206\u9875\u5230 SOQL \u4e2d\u7ed3\u679c\u7684\u7279\u5b9a\u5b50\u96c6\u3002<samp>OFFSET<\/samp><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u7f13\u5b58\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e<\/h2>\n\n\n\n<p>\u7f13\u5b58\u4efb\u4f55\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e\uff0c\u4f8b\u5982\u56fe\u6807\u56fe\u5f62\uff0c\u5e76\u7f13\u5b58\u5168\u5c40\u6570\u636e \u5728\u81ea\u5b9a\u4e49\u8bbe\u7f6e\u4e2d\u3002<\/p>\n\n\n\n<p>Visualforce \u9875\u9762\u6709\u65f6\u4f1a\u5168\u5c40\u4f7f\u7528\u8ba1\u7b97\u7ed3\u679c\u3002\u9875\u9762\u4f7f\u7528\u76f8\u540c\u7684\u6570\u636e \u8de8\u7528\u6237\u548c\u8bf7\u6c42\u3002\u8981\u63d0\u9ad8\u4f7f\u7528\u5168\u5c40\u6570\u636e\u7684\u9875\u9762\u7684\u6027\u80fd\uff0c\u8bf7\u7f13\u5b58 \u5728\u81ea\u5b9a\u4e49\u8bbe\u7f6e\u4e2d\u8ba1\u7b97\u7ed3\u679c\uff0c\u5e76\u5b9a\u671f\u5237\u65b0\u7ed3\u679c\uff0c\u800c\u4e0d\u662f\u5728 \u6bcf\u4e2a\u8bf7\u6c42\u3002\u81ea\u5b9a\u4e49\u8bbe\u7f6e\u662f\u5e94\u7528\u7a0b\u5e8f\u7f13\u5b58\u7684\u4e00\u90e8\u5206\uff0c\u4e0d\u9700\u8981\u6570\u636e\u5e93 \u67e5\u8be2\u68c0\u7d22\u3002\u5728\u6b64\u65b9\u6cd5\u4e0e\u66f4\u65b0\u81ea\u5b9a\u4e49\u7f13\u5b58\u6240\u9700\u7684\u65f6\u95f4\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861 \u6570\u636e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5ef6\u8fdf\u52a0\u8f7d\u9875\u9762\u7ec4\u4ef6<\/h2>\n\n\n\n<p>\u82e5\u8981\u51cf\u5c11\u6216\u5ef6\u8fdf\u6210\u672c\u9ad8\u6602\u7684\u8ba1\u7b97\uff0c\u8bf7\u4f7f\u7528\u5ef6\u8fdf\u52a0\u8f7d\u3002\u4f7f\u7528\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u9875\u9762 \u9996\u5148\u52a0\u8f7d\u5176\u57fa\u672c\u7ec4\u4ef6\uff0c\u5e76\u5ef6\u8fdf\u5176\u4ed6\u529f\u80fd\uff0c\u76f4\u5230\u7528\u6237\u6267\u884c \u9700\u8981\u4fe1\u606f\u7684\u64cd\u4f5c\u3002\u8fd9\u79cd\u6280\u672f\u4f7f\u7528\u6237\u80fd\u591f\u66f4\u5feb\u5730\u8bbf\u95ee\u57fa\u672c \u529f\u80fd\uff0c\u5e76\u4f7f\u5927\u9875\u9762\u770b\u8d77\u6765\u66f4\u5177\u54cd\u5e94\u6027\uff0c\u5373\u4f7f\u6574\u4e2a\u9875\u9762\u91c7\u7528 \u52a0\u8f7d\u7684\u603b\u65f6\u95f4\u76f8\u540c\u3002<\/p>\n\n\n\n<p>\u8981\u5ef6\u8fdf\u52a0\u8f7d Visualforce \u9875\u9762\u7684\u67d0\u4e9b\u90e8\u5206\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u6280\u672f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 Visualforce \u7ec4\u4ef6\u4e0a\u7684&nbsp;rerender&nbsp;\u5c5e\u6027\u66f4\u65b0 \u7ec4\u4ef6\uff0c\u800c\u4e0d\u66f4\u65b0\u6574\u4e2a\u9875\u9762\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528 JavaScript \u8fdc\u7a0b\u5904\u7406 \u8c03\u7528\u63a7\u5236\u5668\u4e2d\u7684\u51fd\u6570\u5e76\u68c0\u7d22\u8f85\u52a9\u6216\u9759\u6001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u4ee5\u6839\u636e\u7528\u6237\u64cd\u4f5c\u663e\u793a\u548c\u9690\u85cf\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5ef6\u8fdf\u52a0\u8f7d\u9875\u9762\u65f6\uff0c\u8bf7\u8003\u8651\u7528\u6237\u6570\u548c\u9884\u671f\u7684\u6570\u636e\u91cf \u9875\u9762\u3002\u8bf7\u6ce8\u610f\u5e76\u53d1 API \u8c03\u7528\u9650\u5236\u7b49\u9650\u5236\u3002\u4f8b\u5982\uff0c\u5982\u679c \u5bfc\u822a\u6811\u4ec5\u6839\u636e\u9700\u8981\u52a0\u8f7d\u5143\u7d20\uff0c\u67e5\u8be2\u6570\u91cf\u53ef\u80fd\u6700\u7ec8\u8d85\u51fa \u4e0e\u6570\u636e\u7684\u6bd4\u4f8b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u8bf7\u6c42<\/h2>\n\n\n\n<p>\u5e76\u53d1\u8bf7\u6c42\u662f\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u4efb\u52a1\uff0c\u53ef\u4ee5\u963b\u6b62\u5176\u4ed6\u5f85\u5904\u7406\u7684\u4efb\u52a1\u3002\u51cf\u5c11 \u5ef6\u8fdf\uff0c\u5c3d\u53ef\u80fd\u5c06\u4ee3\u7801\u79fb\u52a8\u5230\u5f02\u6b65\u4ee3\u7801\u5757\uff0c\u5e76\u786e\u4fdd\u64cd\u4f5c\u65b9\u6cd5 \u4f7f\u7528\u7ec4\u4ef6\u662f \u8f7b\u3002<\/p>\n\n\n\n<p><samp>&lt;apex:actionPoller&gt;<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7f16\u5199\u5f02\u6b65\u4ee3\u7801<\/h2>\n\n\n\n<p>\u82e5\u8981\u5378\u8f7d\u6210\u672c\u9ad8\u6602\u7684\u5904\u7406\uff0c\u8bf7\u4f7f\u7528\u5f02\u6b65 JavaScript \u548c XML \uff08Ajax\uff09 \u79fb\u52a8 \u5f02\u6b65\u4ee3\u7801\u5757\u7684\u975e\u5fc5\u8981\u903b\u8f91\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u4ec5\u4f7f\u7528 \u540c\u6b65\u4ee3\u7801\uff0c\u7528\u6237\u5355\u51fb\u6309\u94ae\u5e76\u7b49\u5f85\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u4efb\u52a1\u5b8c\u6210 \u5728\u4ed6\u4eec\u770b\u5230\u786e\u8ba4\u6d88\u606f\u4e4b\u524d\u3002\u76f8\u53cd\uff0c\u5982\u679c\u9875\u9762\u5c06\u957f\u65f6\u95f4\u8fd0\u884c\u7684 \u4efb\u52a1\u8fdb\u884c\u5f02\u6b65\u5904\u7406\uff0c\u5219\u63a7\u4ef6\u4f1a\u7acb\u5373\u8fd4\u56de\u7ed9\u7528\u6237\u3002\u60a8\u53ef\u4ee5 \u5c06\u9875\u9762\u914d\u7f6e\u4e3a\u5728\u4efb\u52a1\u5b8c\u6210\u65f6\u901a\u77e5\u7528\u6237\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4fdd\u6301 &lt;apex\uff1aactionPoller&gt; \u8f7b\u91cf\u7ea7<\/h2>\n\n\n\n<p>\u8be5\u7ec4\u4ef6\u662f\u4e00\u4e2a\u8ba1\u65f6\u5668\uff0c\u5b83 \u53d1\u51fa Ajax \u8bf7\u6c42\u3002\u4f7f\u7528\u8be5\u7ec4\u4ef6\u7684\u9875\u9762\u5728\u670d\u52a1\u5668\u4e0a\u53d1\u51fa\u8fde\u7eed\u8bf7\u6c42\u3002\u5982\u679c \u7528\u6237\u957f\u65f6\u95f4\u6253\u5f00\u9875\u9762\u6216\u5728\u540c\u4e00\u9875\u9762\u4e0a\u6253\u5f00\u591a\u4e2a\u7a97\u53e3 \u9875\u9762\uff08\u4f8b\u5982\uff0c\u83b7\u53d6\u591a\u4e2a\u5e10\u6237\u7684\u8be6\u7ec6\u4fe1\u606f\uff09\u4f1a\u964d\u4f4e\u6027\u80fd\u3002<samp>&lt;apex:actionPoller&gt;<\/samp><samp>&lt;apex:actionPoller&gt;<\/samp><\/p>\n\n\n\n<p>\u4e3a\u907f\u514d\u6027\u80fd\u4e0b\u964d\uff0c\u8bf7\u907f\u514d\u6267\u884c DML\u3001\u5916\u90e8\u670d\u52a1\u8c03\u7528\u7b49 \u8c03\u7528\u7684\u64cd\u4f5c\u65b9\u6cd5\u4e2d\u7684\u8d44\u6e90\u5bc6\u96c6\u578b\u64cd\u4f5c\u3002\u4ed4\u7ec6\u8003\u8651\u91cd\u590d\u8c03\u7528\u7684\u52a8\u4f5c\u65b9\u6cd5\u7684\u6548\u679c \u95f4\u9694\u3002\u5f53\u8be5\u65b9\u6cd5\u7528\u4e8e\u5e7f\u6cdb\u5206\u5e03\u6216 \u6301\u7eed\u6d3b\u8dc3\u7684\u9875\u9762\u3002<samp>&lt;apex:actionPoller&gt;<\/samp><samp>&lt;apex:actionPoller&gt;<\/samp><\/p>\n\n\n\n<p>\u4e3a\u907f\u514d\u8fbe\u5230\u8c03\u63a7\u5668\u9650\u5236\uff0c\u8bf7\u589e\u52a0 Ajax \u8bf7\u6c42\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u3002\u7ec4\u4ef6\u7684 interval \u5c5e\u6027 \u4ee5\u79d2\u4e3a\u5355\u4f4d\u6d4b\u91cf Ajax \u66f4\u65b0\u8bf7\u6c42\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u3002\u6b64\u503c\u5fc5\u987b\u4e3a 5 \u79d2\u6216\u66f4\u5927\uff0c\u5982\u679c\u672a\u6307\u5b9a\uff0c\u5219\u9ed8\u8ba4\u4e3a 60 \u79d2\u3002<samp>&lt;apex:actionPoller&gt;<\/samp><\/p>\n\n\n\n<p>\u8be5\u7ec4\u4ef6\u9002\u7528\u4e8e \u4e0d\u9700\u8981\u6602\u8d35\u5904\u7406\u7684\u9875\u9762\uff0c\u4f46\u9002\u7528\u4e8e\u8ba1\u7b97\u9700\u8981\u7684\u9875\u9762 \u66f4\u591a\u7684\u670d\u52a1\u5668\u65f6\u95f4\uff0c\u8bf7\u8003\u8651\u5c06\u7ec4\u4ef6\u4e0e JavaScript \u4e00\u8d77\u4f7f\u7528 \u8fdc\u7a0b\u5904\u7406 \u76f8\u53cd\u3002\u8fd9\u79cd\u66ff\u4ee3\u65b9\u6cd5\u9700\u8981\u66f4\u591a\u7684\u4ee3\u7801\uff0c\u4f46\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027\u548c \u6548\u7387\u3002<samp>&lt;apex:actionPoller&gt;<\/samp><samp>&lt;apex:actionFunction&gt;<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5199\u5165\u9ad8\u6548\u7684 Apex \u548c SOQL<\/h2>\n\n\n\n<p>\u81ea \u63d0\u9ad8\u6574\u4f53\u6027\u80fd \u4e00\u4e2a \u89c6\u89c9\u529b \u9875\u9762\uff0c\u5199\u5165\u6548\u7387\u9ad8 Apex \u548c SOQL\u3002<\/p>\n\n\n\n<p>\u5f53\u60a8\u7f16\u5199 Apex \u6216 SOQL \u4ee5\u5728 Visualforce \u9875\u9762\u4e2d\u4f7f\u7528\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c3d\u53ef\u80fd\u5728 SOQL \u4e2d\u6267\u884c\u8ba1\u7b97\uff0c\u800c\u4e0d\u662f\u5728 Apex \u4e2d\u6267\u884c\u8ba1\u7b97\u3002<\/li>\n\n\n\n<li>\u5207\u52ff\u5728\u5faa\u73af\u4e2d\u6267\u884c\u6570\u636e\u64cd\u4f5c\u8bed\u8a00 \uff08DML\uff09 \u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u9996\u5148\u5728 SOQL \u4e2d\u8fc7\u6ee4\uff0c\u7136\u540e\u5728 Apex \u4e2d\u8fc7\u6ee4\uff0c\u6700\u540e\u5728 Visualforce \u4e2d\u8fc7\u6ee4\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u7f16\u5199\u9ad8\u6548\u7684 getter \u65b9\u6cd5<\/h2>\n\n\n\n<p>Visualforce \u8bf7\u6c42\u8bc4\u4f30\u8868\u8fbe\u5f0f\u3001\u64cd\u4f5c\u5c5e\u6027\u548c\u5176\u4ed6\u65b9\u6cd5\u8c03\u7528\u3002\u4e00\u4e2a \u8868\u5355\u63d0\u4ea4\u7b49\u8bf7\u6c42\u53ef\u4ee5\u591a\u6b21\u8c03\u7528\u7c7b\u4e2d\u7684 getter \u65b9\u6cd5\u3002\u8ddf \u66f4\u6709\u6548\u7684 getter \u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u9632\u6b62\u4e0d\u5fc5\u8981\u7684\u67e5\u627e \u8bb0\u5f55\u3002<\/p>\n\n\n\n<p>\u82e5\u8981\u51cf\u5c11\u6bcf\u4e2a\u8bf7\u6c42\u7684\u5904\u7406\u8d1f\u8f7d\uff0c\u8bf7\u7f13\u5b58\u5c5e\u6027\u8ba1\u7b97\u7684\u503c\uff0c\u4ee5\u4fbf \u5176\u4ed6\u8c03\u7528\u53ef\u4ee5\u5728\u4e0d\u91cd\u65b0\u8ba1\u7b97\u503c\u7684\u60c5\u51b5\u4e0b\u8bbf\u95ee\u8be5\u5c5e\u6027\u3002<\/p>\n\n\n\n<p>\u60a8\u8fd8\u53ef\u4ee5\u5728 Apex \u7c7b\u4e2d\u914d\u7f6e getter \u65b9\u6cd5\uff0c\u4f7f\u5176\u4ec5\u5728 object \u4e3a null\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u8fd4\u56de\u5173\u8054\u7684\u5ba2\u6237\u8bb0\u5f55 \u4e0e\u9875\u9762\u3002\u5728\u7b2c\u4e00\u6b21\u65b9\u6cd5\u8c03\u7528\u65f6\uff0c\u8be5\u65b9\u6cd5\u67e5\u8be2\u8bb0\u5f55\uff0c\u56e0\u4e3a MyAccount \u5bf9\u8c61\u4e3a null\u3002\u5728\u540e\u7eed\u8c03\u7528\u4e2d\uff0c\u5b83\u5c06\u8fd4\u56de\u5bf9\u8c61\u7684\u5b58\u50a8\u503c\uff0c\u8be5\u503c \u9632\u6b62\u5176\u4ed6\u76f8\u540c\u7684\u67e5\u8be2\uff1a<samp>SELECT<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\n Account MyAccount;\n public Account getMyAccount() {\n    if (MyAccount == null) {\n            MyAccount = &#91;SELECT name, annualRevenue FROM Account\n            WHERE\n            id = :ApexPages.currentPage().getParameters().\n            get('id')];\n        }\n    return MyAccount;\n }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f18\u5316\u5217\u8868\u548c\u8868\u683c<\/h2>\n\n\n\n<p>\u8981\u63d0\u9ad8\u5305\u542b\u5217\u8868\u548c\u8868\u683c\u7684 Visualforce \u9875\u9762\u7684\u6027\u80fd\uff0c\u8bf7\u9650\u5236\u6570\u91cf \u6bcf\u9875\u663e\u793a\u7684\u6570\u636e\uff0c\u5e76\u51cf\u5c11\u6bcf\u4e2a\u8868\u7684\u53ef\u7f16\u8f91\u5b57\u6bb5\u6570\u3002\u60a8\u8fd8\u53ef\u4ee5 \u5b9e\u73b0\u5206\u9875\u6216\u5c06\u7ec4\u4ef6\u66ff\u6362\u4e3a\u9759\u6001 HTML \u8868\u3002<\/p>\n\n\n\n<p><samp>&lt;apex:pageBlockTable&gt;<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u679c\u53ef\u80fd\uff0c\u907f\u514d\u4f7f\u7528\u6570\u636e\u7f51\u683c<\/h2>\n\n\n\n<p>\u6570\u636e\u7f51\u683c\u662f\u663e\u793a\u5177\u6709\u53ef\u7f16\u8f91\u5b57\u6bb5\u7684\u8bb0\u5f55\u7684\u8868\u3002\u6570\u636e\u7f51\u683c\u9891\u7e41 \u6269\u5c55\u5230\u9875\u9762\u4e0a\u7684\u6570\u5343\u4e2a\u8f93\u5165\u7ec4\u4ef6\uff0c\u5e76\u8d85\u8fc7\u6700\u5927\u89c6\u56fe\u72b6\u6001\u5927\u5c0f\u3002 \u5927\u578b\u6570\u636e\u7f51\u683c\u4f1a\u5bfc\u81f4 Visualforce \u7ec4\u4ef6\u6811\u7684\u5904\u7406\u901f\u5ea6\u8f83\u6162\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u7684 Visualforce \u9875\u9762\u6709\u6570\u636e\u7f51\u683c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u5206\u9875\u548c\u8fc7\u6ee4\u5668\u3002<\/li>\n\n\n\n<li>\u82e5\u8981\u51cf\u5c0f\u89c6\u56fe\u72b6\u6001\u5927\u5c0f\uff0c\u8bf7\u5c3d\u53ef\u80fd\u5c06\u6570\u636e\u8bbe\u7f6e\u4e3a\u53ea\u8bfb\u3002<\/li>\n\n\n\n<li>\u4ec5\u663e\u793a\u7ed9\u5b9a\u8bb0\u5f55\u7684\u57fa\u672c\u6570\u636e\u3002\u63d0\u4f9b\u6307\u5411\u57fa\u4e8e Ajax \u7684\u8be6\u7ec6\u4fe1\u606f\u7684\u94fe\u63a5 \u6846\u6216\u5230\u5355\u72ec\u7684\u8be6\u7ec6\u4fe1\u606f\u9875\u9762\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8003\u8651\u9759\u6001 HTML \u8868\u683c<\/h2>\n\n\n\n<p>\u5177\u6709\u8fed\u4ee3\u7ec4\u4ef6\u7684 Visualforce \u9875\u9762\u6700\u591a\u53ef\u4ee5\u5305\u542b 1,000 \u4e2a\u9879\u76ee\uff0c\u6216\u8005\u5f53 \u9875\u9762\u4ee5\u53ea\u8bfb\u6a21\u5f0f\u6267\u884c\u3002\u4f46\u662f\uff0c\u9875\u9762\u6027\u80fd\u6709\u65f6\u4f1a\u5728\u4e4b\u524d\u4e0b\u964d \u5982\u679c\u5305\u542b\u5177\u6709 Render \u5c5e\u6027\u7684\u7ec4\u4ef6\uff0c\u5219\u6b64\u9650\u5236 \u660e\u786e\u6307\u5b9a\u3002<samp>&lt;apex:pageBlockTable&gt;<\/samp><samp>&lt;apex:pageBlockTable&gt;<\/samp><samp>&lt;apex:column&gt;<\/samp><\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u7684 Visualforce \u9875\u9762\u5305\u542b\u5927\u578b\u8868\u683c\uff0c\u6211\u4eec\u5efa\u8bae\u60a8\u5b9e\u73b0\u5206\u9875\u3002 \u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u9759\u6001 HTML \u8868\u800c\u4e0d\u662f\u7ec4\u4ef6\u3002\u5728 HTML \u8868\u4e2d\uff0c\u4f7f\u7528\u7ec4\u4ef6\u5faa\u73af\u8bbf\u95ee HTML \u884c \u5143\u7d20\u3002\u6709\u5173\u4f7f\u7528 \u7684\u793a\u4f8b HTML \u8868\uff0c\u8bf7\u53c2\u9605\u00a0apex\uff1arepeat\u00a0\u7ec4\u4ef6 \u53c2\u8003\u9875\u9762\u3002<samp>&lt;apex:pageBlockTable>&lt;apex:repeat>&lt;apex:repeat><\/samp><\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u4e0e\u8868\u683c\u4e0d\u540c\uff0c\u9759\u6001 HTML \u8868\u6ca1\u6709\u6807\u51c6\u7684 Salesforce \u6837\u5f0f\u3002<samp>&lt;apex:pageBlockTable&gt;<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f18\u5316\u89c6\u56fe\u72b6\u6001<\/h2>\n\n\n\n<p>\u4e3a\u4e86\u7ef4\u62a4 Visualforce \u9875\u9762\u7684\u89c6\u56fe\u72b6\u6001\uff0cLightning Platform \u4f1a\u5b58\u50a8 \u7ec4\u4ef6\u3001\u5b57\u6bb5\u503c\u548c\u63a7\u5236\u5668\u4f5c\u4e3a\u9690\u85cf\u8868\u5355\u5143\u7d20\u4e2d\u7684\u52a0\u5bc6\u5b57\u7b26\u4e32\u3002 \u89c6\u56fe\u72b6\u6001\u7684\u9650\u5236\u4e3a 170 KB\u3002\u5927\u578b\u89c6\u56fe\u72b6\u6001\u9700\u8981\u66f4\u957f\u7684\u5904\u7406\u65f6\u95f4 \u6bcf\u4e2a\u8bf7\u6c42\uff0c\u5305\u62ec\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u65f6\u95f4\uff0c\u4ee5\u53ca\u52a0\u5bc6\u548c\u89e3\u5bc6 \u65f6\u95f4\u3002\u5982\u679c\u51cf\u5c0f\u89c6\u56fe\u72b6\u6001\u5927\u5c0f\uff0c\u5219\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u66f4\u5feb\uff0c\u505c\u6ede\u66f4\u5c11 \u7ecf\u5e38\u3002<\/p>\n\n\n\n<p>\u8981\u68c0\u67e5 Visualforce \u9875\u9762\u7684\u89c6\u56fe\u72b6\u6001\uff0c\u8bf7\u8bbe\u7f6e\u201c\u5f00\u53d1\u6a21\u5f0f\u201d\u548c\u201c\u663e\u793a\u89c6\u56fe\u72b6\u6001\u201d \u5728\u5f00\u53d1\u6a21\u5f0f\u4e0b\u7684\u7528\u6237\u6743\u9650\u3002\u5f00\u53d1\u6a21\u5f0f\u9875\u811a\u4e2d\u7684\u201c\u89c6\u56fe\u72b6\u6001\u201d\u9009\u9879\u5361 \u663e\u793a\u89c6\u56fe\u72b6\u6001\u7684\u5206\u5e03\u3002\u786e\u4fdd\u60a8\u77e5\u9053\u6bcf\u4e2a\u89c6\u56fe\u7684\u72b6\u6001\u5927\u5c0f \u9875\u9762\uff0c\u5e76\u4f7f\u7528\u5927\u91cf\u6570\u636e\u8fdb\u884c\u6d4b\u8bd5\uff0c\u4ee5\u9632\u6b62\u90e8\u7f72\u540e\u53ef\u80fd\u51fa\u73b0\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u8981\u51cf\u5c11\u89c6\u56fe\u72b6\u6001\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u7b5b\u9009\u5668\u548c\u5206\u9875\u6765\u51cf\u5c11\u9700\u8981\u72b6\u6001\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u5173\u952e\u5b57\u58f0\u660e\u5b9e\u4f8b\u53d8\u91cf \u5982\u679c\u8be5\u53d8\u91cf\u4ec5\u5bf9\u5f53\u524d\u8bf7\u6c42\u6709\u7528\u3002\u4e0d\u5305\u62ec\u77ac\u6001\u53d8\u91cf \u5728\u89c6\u56fe\u72b6\u6001\u4e2d\u3002<samp>transient<\/samp><\/li>\n\n\n\n<li>\u4f18\u5316 SOQL \u8c03\u7528\uff0c\u4ee5\u4ec5\u8fd4\u56de\u4e0e Visualforce 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\u5217\u8868\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u66f4\u6539\u4e86\u975e\u5305\u5bb9\u6027\u6761\u6b3e\uff0c\u4ee5\u7b26\u5408\u6211\u4eec\u516c\u53f8\u7684\u5e73\u7b49\u4ef7\u503c\u89c2\u3002 \u6211\u4eec\u4fdd\u7559\u4e86\u67d0\u4e9b\u6761\u6b3e\uff0c\u4ee5\u907f\u514d\u5bf9\u5ba2\u6237\u5b9e\u65bd\u4ea7\u751f\u4efb\u4f55\u5f71\u54cd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c28\u614e\u4f7f\u7528 immediate \u5c5e\u6027<\/h2>\n\n\n\n<p>\u5177\u6709\u5c5e\u6027\u7684 Visualforce \u7ec4\u4ef6 \u8bbe\u7f6e\u4e3a\u5728\u4e0d\u5904\u7406\u4efb\u4f55\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u64cd\u4f5c \u9875\u9762\u4e0a\u5173\u8054\u5b57\u6bb5\u7684\u9a8c\u8bc1\u89c4\u5219\u3002\u4ec5\u5f53\u4ee5\u4e0b\u60c5\u51b5\u65f6\uff0c\u624d\u5e94\u4f7f\u7528\u6b64\u5c5e\u6027 \u8be5\u7ec4\u4ef6\u6267\u884c\u4e00\u4e2a\u64cd\u4f5c\uff0c\u8be5\u64cd\u4f5c\u5728\u5b8c\u6210\u540e\u5bfc\u822a\u79bb\u5f00\u9875\u9762\u3002<\/p>\n\n\n\n<p><samp>immediate<\/samp><samp>true<\/samp><\/p>\n\n\n\n<p>\u5f53\u7ec4\u4ef6\u884c\u4e3a\u5305\u542b\u57fa\u672c\u5bfc\u822a\u4ee5\u5916\u7684\u5185\u5bb9\u65f6\uff0c\u4f1a\u51fa\u73b0\u529f\u80fd\u95ee\u9898 \u529f\u80fd\u6027\u3002\u56e0\u4e3a\u4e0d\u4f1a\u66f4\u65b0 \u9875\u9762\u7684\u6570\u636e\u6a21\u578b\uff0c\u9875\u9762\u7684\u6570\u636e\u6a21\u578b\u4e0d\u4f1a\u53cd\u6620\u5728\u64cd\u4f5c\u671f\u95f4\u6240\u505a\u7684\u4efb\u4f55\u66f4\u6539\u3002 \u8fd9\u79cd\u5dee\u5f02\u53ef\u80fd\u4f1a\u5bfc\u81f4\u672a\u5b9a\u4e49\u7684\u884c\u4e3a\u548c\u53ef\u80fd\u7684\u6570\u636e\u635f\u574f\u3002<samp>immediate=&#8221;true&#8221;<\/samp><\/p>\n\n\n\n<p>\u5efa\u8bae\u4ec5\u5728\u53d6\u6d88\u65f6\u4f7f\u7528&nbsp;immediate&nbsp;\u5c5e\u6027 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\/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Visualforce\u6700\u4f73\u5b9e\u8df5 - \u767d\u767d\u968f\u7b14\" \/>\n<meta property=\"og:description\" content=\"\u63d0\u9ad8 Visualforce \u6027\u80fd\u7684\u6700\u4f73\u5b9e\u8df5 \u4e86\u89e3\u63d0\u9ad8 Visualforce \u9875\u9762\u6027\u80fd\u7684\u7b56\u7565\u3002\u8bbf\u95ee\u7ec4\u4ef6 ID \u7684\u6700\u4f73\u5b9e\u8df5\u9759\u6001\u8d44\u6e90\u7684\u6700\u4f73\u5b9e\u8df5\u63a7\u5236\u5668\u548c\u63a7\u5236\u5668\u6269\u5c55\u7684\u6700\u4f73\u5b9e\u8df5\u4f7f\u7528\u7ec4\u4ef6\u5206\u9762\u7684\u6700\u4f73\u5b9e\u8df5\u9875\u9762\u5757\u7ec4\u4ef6\u7684\u6700\u4f73\u5b9e\u8df5\u6e32\u67d3 PDF \u6587\u4ef6\u7684\u6700\u4f73\u5b9e\u8df5 \u5c06 Visualforce \u9875\u9762\u5448\u73b0\u4e3a PDF \u6587\u4ef6\u662f\u5171\u4eab\u6709\u5173 Salesforce 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