{"id":3271,"date":"2021-01-13T14:09:21","date_gmt":"2021-01-13T06:09:21","guid":{"rendered":"http:\/\/www.salesforcecrm.cn\/?p=3271"},"modified":"2021-01-13T14:09:21","modified_gmt":"2021-01-13T06:09:21","slug":"%e9%80%82%e7%94%a8%e4%ba%8evisualforce%e5%bc%80%e5%8f%91%e4%ba%ba%e5%91%98%e7%9a%84lightning-web%e7%bb%84%e4%bb%b6-%e4%bd%bf%e7%94%a8salesforce%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3271","title":{"rendered":"\u9002\u7528\u4e8eVisualforce\u5f00\u53d1\u4eba\u5458\u7684Lightning Web\u7ec4\u4ef6 &#8211; \u4f7f\u7528Salesforce\u6570\u636e"},"content":{"rendered":"<h2 id=\"learning-objectives-nbsp\">\u5b66\u4e60\u76ee\u6807<\/h2>\n<p>\u5b8c\u6210\u672c\u5355\u5143\u540e\uff0c\u60a8\u5c06\u80fd\u591f\uff1a<\/p>\n<ul>\n<li>\u610f\u8bc6\u5230\u6839\u636e\u7279\u5b9a\u7528\u4f8b\u9009\u62e9\u6700\u4f73\u65b9\u5f0f\u4f7f\u7528Salesforce\u6570\u636e\u7684\u91cd\u8981\u6027\u3002<\/li>\n<li>\u63cf\u8ff0\u95ea\u7535\u6570\u636e\u670d\u52a1\u5982\u4f55\u4e0eVisualforce\u4e2d\u7684\u6807\u51c6\u63a7\u5236\u5668\u8fdb\u884c\u6bd4\u8f83\u3002<\/li>\n<li>\u8bf4\u660e\u5728Lightning Web\u7ec4\u4ef6\u4e2d\u4f7f\u7528Apex\u4e0e\u5728Visualforce\u4e2d\u4f7f\u7528Apex\u6709\u4f55\u4e0d\u540c\u3002<\/li>\n<\/ul>\n<h2 id=\"visualforce-vs-lwc-data-access\">Visualforce\u4e0eLightning Web\u7ec4\u4ef6\u4e2d\u7684\u6570\u636e\u8bbf\u95ee<\/h2>\n<p>\u4f5c\u4e3aVisualforce\u5f00\u53d1\u4eba\u5458\uff0c\u60a8\u719f\u6089\u5728\u9875\u9762\u4e2d\u4f7f\u7528\u6807\u51c6\u63a7\u5236\u5668\u548c\u7ed1\u5b9aApex\u63a7\u5236\u5668\u65b9\u6cd5\u4ee5\u4f7f\u7528Salesforce\u6570\u636e\u7684\u60c5\u51b5\u3002\u5728Lightning Web Components\u4e2d\uff0c\u60a8\u7684JavaScript\u4ee3\u7801\u4e0eLightning Data Service\uff08LDS\uff09\u6216Apex\u4ee3\u7801\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n<table class=\"featureTable sort_table\">\n<thead class=\"thead sorted\">\n<tr>\n<th>\u4f20\u7edf\u7684Visualforce\u6570\u636e\u8bbf\u95ee<\/th>\n<th>\u95ea\u7535Web\u7ec4\u4ef6\u6570\u636e\u8bbf\u95ee<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"tbody\">\n<tr>\n<td><img fetchpriority=\"high\" decoding=\"async\" class=\"image image-block image-center\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/modules\/lwc-for-visualforce-developers\/work-with-salesforce-data-in-lwc\/images\/6ed5ee95a67091f3ee2d78c417f9c649_1-dd-51971-7767-4-a-6-c-9-ac-1-37-d-7-dff-2-d-751.png\" alt=\"\u5ba2\u6237\u7aef\u5982\u4f55\u5728Visualforce\u4e2d\u8bbf\u95ee\u670d\u52a1\u5668\u4e0a\u7684\u6570\u636e\" width=\"298\" height=\"412\" \/><\/td>\n<td><img decoding=\"async\" class=\"image image-block image-center\" src=\"https:\/\/res.cloudinary.com\/hy4kyit2a\/f_auto,fl_lossy,q_70\/learn\/modules\/lwc-for-visualforce-developers\/work-with-salesforce-data-in-lwc\/images\/3ee75daa7fcc114341878b0e1102ef25_c-3-ad-332-b-759-c-41-e-3-8453-785-d-620-fd-006.png\" alt=\"\u5ba2\u6237\u7aef\u5982\u4f55\u5728Lightning Web Components\u4e2d\u8bbf\u95ee\u670d\u52a1\u5668\u4e0a\u7684\u6570\u636e\" width=\"298\" height=\"533\" \/><\/td>\n<\/tr>\n<tr>\n<td>\n<div><\/div>\n<p>\u68c0\u7d22\u6216\u4fee\u6539\u6570\u636e\u7684Visualforce\u9875\u9762\u4f7f\u7528\u6807\u51c6\u63a7\u5236\u5668\u6216Apex\u63a7\u5236\u5668\u3002\u4f20\u7edf\u4e0a\uff0c\u5ba2\u6237\u7aef\u5728\u9875\u9762\u52a0\u8f7d\u6216\u4f5c\u4e3a\u64cd\u4f5c\u65f6\u8c03\u7528\u63a7\u5236\u5668\u65b9\u6cd5\u3002\u65b9\u6cd5\u8fd0\u884c\u540e\uff0cVisualforce\u5f15\u64ce\u5c06\u751f\u6210\u6700\u7ec8\u6807\u8bb0\u5e76\u5c06\u5176\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002<\/td>\n<td>\n<div><\/div>\n<p>\u68c0\u7d22\u6216\u4fee\u6539\u6570\u636e\u7684Lightning Web\u7ec4\u4ef6\u4f7f\u7528Lightning Data Service\u6216Apex\u65b9\u6cd5\u3002\u5ba2\u6237\u7aef\u4f7f\u7528JavaScript\u8c03\u7528Lightning Data Service\u6216Apex\u65b9\u6cd5\u3002\u5728\u8fd0\u884cLightning Data Service\u6216Apex\u65b9\u6cd5\u4e4b\u540e\uff0cLightning Web Components\u5f15\u64ce\u4f1a\u5c06\u6240\u9700\u7684\u6700\u5c11\u6570\u636e\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002\u5ba2\u6237\u7aef\u4e0a\u7684JavaScript\u5904\u7406\u6570\u636e\u5e76\u751f\u6210\u6700\u7ec8\u6807\u8bb0\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"lds-vs-standard-controller\">\u95ea\u7535\u6570\u636e\u670d\u52a1\u4e0eStandardController<\/h2>\n<p>Lightning Data Service\u00a0\u662f\u5728Lightning Web\u7ec4\u4ef6\u4e2d\u4f7f\u7528Salesforce\u6570\u636e\u7684\u9996\u9009\uff08\u4e5f\u662f\u6700\u7b80\u5355\uff09\u65b9\u5f0f\u3002\u95ea\u7535\u6570\u636e\u670d\u52a1\u662f\u4e0eVisualforce\u6807\u51c6\u63a7\u5236\u5668\u7c7b\u4f3c\u7684\u6982\u5ff5\u3002\u5728JavaScript\u4e2d\u4f7f\u7528Lightning Data Service\u5728\u4e0d\u7f16\u5199Apex\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u8bfb\u53d6\uff0c\u521b\u5efa\u6216\u4fee\u6539\u5355\u4e2a\u8bb0\u5f55\uff0c\u6216\u8bfb\u53d6\u67d0\u4e9b\u5143\u6570\u636e\u3002Lightning Data Service\u63d0\u4f9b\u4e86\u9ad8\u7ea7\u529f\u80fd\uff0c\u4f8b\u5982\u7ec4\u4ef6\u4e4b\u95f4\u7684\u7f13\u5b58\u548c\u540c\u6b65\u3002<\/p>\n<div class=\"box message info\">\n<div class=\"inner\">\n<div class=\"bd\">\n<div class=\"media\">\n<div class=\"mediaBd\">\n<h4 class=\"mbs\">\u6ce8\u610f<\/h4>\n<div class=\"message-media-content\">\n<p>\u8981\u4f7f\u7528Lightning Data Service\uff0c\u60a8\u6709\u4e24\u4e2a\u9009\u62e9\uff1a\u4f7f\u7528\u5141\u8bb8\u60a8\u6784\u5efa\u8868\u5355\u7684\u57fa\u672c\u7ec4\u4ef6\uff0c\u6216\u4f7f\u7528LDS\u7535\u7ebf\u9002\u914d\u5668\u6216\u529f\u80fd\u3002\u4f7f\u7528Lightning Data Service\u7684\u4ee3\u7801\u975e\u5e38\u5177\u4f53\uff0c\u5e76\u4e14\u5728Lightning Web\u7ec4\u4ef6\u548cSalesforce\u6570\u636e\u00a0\u6a21\u5757\u4e2d\u7684\u201c\u4f7f\u7528Lightning Data Service\u6765\u5904\u7406\u6570\u636e\u201d\u4e2d\u8fdb\u884c\u4e86\u8be6\u7ec6\u8bf4\u660e\u00a0\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 id=\"apex-in-visualforce-vs-apex-in-lwc\">Visualforce\u4e2d\u7684Apex\u4e0eLightning Web Components\u4e2d\u7684Apex<\/h2>\n<p>Lightning Data Service\u4e0d\u80fd\u6ee1\u8db3\u6240\u6709\u7528\u4f8b\u7684\u8981\u6c42\u3002\u4f8b\u5982\uff0c\u5f53\u60a8\u8981\u81ea\u5b9a\u4e49\u5355\u8bb0\u5f55\u6570\u636e\u4e8b\u52a1\u6216\u5bf9\u5355\u4e2a\u4e8b\u52a1\u6267\u884c\u591a\u8bb0\u5f55\u64cd\u4f5c\u65f6\uff0c\u9700\u8981Apex\u3002\u5728\u5c06Apex\u4e0eLightning Web\u7ec4\u4ef6\u4e00\u8d77\u4f7f\u7528\u4e4b\u524d\uff0c\u8bf7\u6ce8\u610f\u5728Lightning Web\u7ec4\u4ef6\u4e2d\u4f7f\u7528Apex\u4e0e\u5728Visualforce\u4e2d\u4f7f\u7528Apex\u662f\u4e0d\u540c\u7684\u3002\u4e3b\u8981\u533a\u522b\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li>\u65b9\u6cd5\u662f\u65e0\u72b6\u6001\u7684\u3002<\/li>\n<li>\u65b9\u6cd5\u5fc5\u987b\u662f<code>@AuraEnabled<\/code>\uff0c\u5e76\u4e14\u53ef\u4ee5\u6807\u8bb0\u4e3a\u53ef\u7f13\u5b58\u3002<\/li>\n<li>\u60a8\u5bfc\u5165Apex\u65b9\u6cd5\uff0c\u7136\u540e\u8c03\u7528\u5b83\u4eec\u3002<\/li>\n<li>\u60a8\u7ed1\u5b9a\u7ec4\u4ef6\u4ee5\u5728\u5143\u6570\u636exml\u6587\u4ef6\u4e2d\u8bb0\u5f55\u9875\u9762\uff0c\u5e76\u5728JavaScript\u6587\u4ef6\u4e2d\u8bbf\u95ee\u8bb0\u5f55ID\u3002<\/li>\n<li>\u6b63\u786e\u7684\u9519\u8bef\u5904\u7406\u6d89\u53ca\u5f15\u53d1\u5f02\u5e38\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u9875\u9762\u6d88\u606f\u3002<\/li>\n<\/ul>\n<p>\u8ba9\u6211\u4eec\u8fdb\u4e00\u6b65\u63a2\u8ba8\u8fd9\u4e9b\u5dee\u5f02\u3002<\/p>\n<h3 id=\"view-state-vs-stateless-methods\">\u67e5\u770b\u72b6\u6001\u4e0e\u65e0\u72b6\u6001\u65b9\u6cd5<\/h3>\n<p>Visualforce\u4f7f\u7528\u89c6\u56fe\u72b6\u6001\u6765\u7ef4\u62a4\u670d\u52a1\u5668\u8bf7\u6c42\u4e4b\u95f4\u7684\u72b6\u6001\u3002\u89c6\u56fe\u72b6\u6001\u5c06\u91cd\u65b0\u521b\u5efa\u9875\u9762\uff0c\u5e76\u5c06\u72b6\u6001\u4f20\u9012\u5230\u5411\u5bfc\u548c\u6307\u5bfc\u5de5\u4f5c\u6d41\u7a0b\u4e2d\u7684\u4e0d\u540c\u9875\u9762\u3002\u5728Lightning Web\u7ec4\u4ef6\u4e2d\uff0c\u670d\u52a1\u5668\u8bf7\u6c42\u662f\u65e0\u72b6\u6001\u7684\u3002\u8fd9\u5bf9\u60a8\u7f16\u5199Apex\u8c03\u7528\u7684\u65b9\u5f0f\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u6bcf\u6b21\u8fdb\u884cApex\u8c03\u7528\u65f6\uff0c\u90fd\u5fc5\u987b\u4f20\u9012\u8be5\u65b9\u6cd5\u6240\u9700\u7684\u6240\u6709\u4fe1\u606f\uff0c\u5e76\u4e14\u8be5\u65b9\u6cd5\u5fc5\u987b\u8fd4\u56de\u7ec4\u4ef6\u6240\u9700\u7684\u6240\u6709\u4fe1\u606f\u3002\u6b64\u5916\uff0c\u8981\u4eceLightning Web\u7ec4\u4ef6\u8c03\u7528Apex\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5fc5\u987b\u5e26\u6709\u6ce8\u91ca<code>@AuraEnabled<\/code>\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u7814\u7a76\u4e00\u4e0bVisualforce Apex\u63a7\u5236\u5668\u3002<\/p>\n<p><strong>AccountListControllerVisualforce.cls<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">with<\/span> <span class=\"token namespace\">sharing<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountListControllerVisualforce<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Account<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> accounts <span class=\"token punctuation\">{<\/span> get<span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">private<\/span> set<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Integer<\/span> numberOfEmployees <span class=\"token punctuation\">{<\/span> get<span class=\"token punctuation\">;<\/span> set<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">queryAccounts<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token comment\">\/\/ In real world, probably more complex logic here<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>accounts <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>\n            SELECT <span class=\"token class-name\">Name<\/span>\n            FROM <span class=\"token class-name\">Account<\/span>\n            WHERE <span class=\"token class-name\">NumberOfEmployees<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">:<\/span>numberOfEmployees\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4ee3\u7801\u91cd\u70b9\uff1a<\/p>\n<ul>\n<li>\u7b2c2\u81f33\u884c\uff1a<code>accounts<\/code>\u548c\u00a0<code>numberOfEmployees<\/code>\u5c5e\u6027\u5b9a\u4e49\u4e3a\u5b9e\u4f8b\u53d8\u91cf\uff0c\u5b83\u4eec\u662f\u63a7\u5236\u5668\u89c6\u56fe\u72b6\u6001\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<li>\u7b2c6\u81f39\u884c\uff1a\u8be5<code>queryAccounts<\/code>\u65b9\u6cd5<code>numberOfEmployees<\/code>\u5728\u00a0<code>accounts<\/code>\u53d8\u91cf\u4e2d\u5b58\u50a8\u4e86\u7531\u8fc7\u6ee4\u7684\u5e10\u6237\u5217\u8868\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Visualforce\u9875\u9762\u4e2d\u5f15\u7528\u8be5\u5217\u8868\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u5c06\u8be5AccountListController for Visualforce\u8f6c\u6362\u4e3aLightning Web\u7ec4\u4ef6\u7684\u63a7\u5236\u5668\u7684\u65b9\u6cd5\u3002<\/p>\n<ol>\n<li>\u4f7f\u7528<code>@AuraEnabled<\/code>\uff0c\u4f7f\u7528<code>cacheable<\/code>\u5c5e\u6027\u6216\u4e0d\u4f7f\u7528\u5c5e\u6027\u6ce8\u91caApex\u65b9\u6cd5\u3002\uff08\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6570\u636e\u00a0<u>\u4e0d\u53ef<\/u>\u5728\u5ba2\u6237\u7aef\u4e2d\u7f13\u5b58\u3002\uff09<\/li>\n<li>\u901a\u8fc7\u4f7f\u5176\u6210\u4e3a\u65e0\u72b6\u6001<code>static<\/code>\u4e14\u72ec\u7acb\u4e8e\u6240\u6709\u5b9e\u4f8b\u53d8\u91cf\u548c\u5c5e\u6027\u7684\u65b9\u6cd5\uff0c\u786e\u4fdd\u5b83\u4eec\u662f\u65e0\u72b6\u6001\u7684\u3002<\/li>\n<li>\u5c06\u65b9\u6cd5\u9700\u8981\u7684\u6240\u6709\u5185\u5bb9\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u3002<\/li>\n<li>\u786e\u4fdd\u6bcf\u79cd\u65b9\u6cd5\u90fd\u8fd4\u56de\u7ec4\u4ef6\u6240\u9700\u7684\u4e00\u5207\u3002<\/li>\n<\/ol>\n<p>\u8fd9\u662f\u9002\u7528\u4e8eLightning Web\u7ec4\u4ef6\u7684\u63a7\u5236\u5668\u3002<\/p>\n<p><strong>AccountListControllerLwc.cls<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">with<\/span> <span class=\"token namespace\">sharing<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountListControllerLwc<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation punctuation\">@AuraEnabled<\/span><span class=\"token punctuation\">(<\/span>cacheable<span class=\"token operator\">=<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Account<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">queryAccounts<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> numberOfEmployees<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span> <span class=\"token comment\">\/\/ Return whatever the component needs<\/span>\n            SELECT <span class=\"token class-name\">Name<\/span>\n            FROM <span class=\"token class-name\">Account<\/span>\n            WHERE <span class=\"token class-name\">NumberOfEmployees<\/span> <span class=\"token operator\">&gt;=<\/span> <span class=\"token operator\">:<\/span>numberOfEmployees\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4ee3\u7801\u91cd\u70b9\uff1a<\/p>\n<ul>\n<li>\u7b2c2\u884c\uff1a\u4f7f\u7528\u6ce8\u91ca<code>queryAccounts<\/code>\u65b9\u6cd5\u00a0<code>@AuraEnabled<\/code>\uff0c\u5e76\u5c06\u5176<code>cacheable<\/code>\u5c5e\u6027\u8bbe\u7f6e\u4e3atrue\u3002<\/li>\n<li>\u7b2c3\u884c\uff1a\u521b\u5efa<code>queryAccounts<\/code>\u65b9\u6cd5<code>static<\/code>\uff0c\u5e76\u5c06\u5176\u5b9a\u4e49<code>numberOfEmployees<\/code>\u4e3aInteger\u53c2\u6570\u3002<\/li>\n<li>\u7b2c4-8\u884c\uff1a\u8be5<code>queryAccounts<\/code>\u65b9\u6cd5\u8fd4\u56de\u8fc7\u6ee4\u540e\u7684\u5e10\u6237\u5217\u8868\u3002<\/li>\n<\/ul>\n<div class=\"box message info\">\n<div class=\"inner\">\n<div class=\"bd\">\n<div class=\"media\">\n<div class=\"mediaBd\">\n<h4 class=\"mbs\">\u6ce8\u610f<\/h4>\n<div class=\"message-media-content\">\n<p>\u5c06\u65b9\u6cd5\u6807\u8bb0\u4e3a\u53ef\u7f13\u5b58\u65f6\uff0c\u907f\u514d\u91cd\u590d\u8c03\u7528\u670d\u52a1\u5668\u3002\u4f46\u662f\uff0c\u5728\u5237\u65b0\u7f13\u5b58\u4e4b\u524d\uff0c\u53ef\u80fd\u4e0d\u4f1a\u8fd4\u56de\u65b0\u6dfb\u52a0\u6216\u66f4\u6539\u7684\u8bb0\u5f55\u7248\u672c\u3002\u8981\u4e86\u89e3\u7f13\u5b58Apex\u65b9\u6cd5\u7684\u542b\u4e49\u4ee5\u53ca\u5982\u4f55\u5237\u65b0\u7f13\u5b58\uff0c\u8bf7\u53c2\u9605Lightning Web Components\u548cSalesforce\u6570\u636e\u00a0\u6a21\u5757\u4e2d\u7684\u201c\u4f7f\u7528Apex\u5904\u7406\u6570\u636e\u201d\u00a0\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 id=\"calling-apex-in-visualforce-vs-lwc\">\u5728Visualforce vs Lightning Web\u7ec4\u4ef6\u4e2d\u8c03\u7528Apex<\/h3>\n<p>\u5728Visualforce\u4e2d\uff0c\u8981\u5728\u7ec4\u4ef6\u6807\u8bb0\u4e2d\u5f15\u7528Apex\u65b9\u6cd5\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06Apex\u63a7\u5236\u5668\u6307\u5b9a\u4e3a<code>&lt;apex:page&gt;<\/code>\u6807\u7b7e\u4e2d\u7684\u5c5e\u6027\u6765\u5c06\u5176\u7ed1\u5b9a\u5230Visualforce\u9875\u9762\u3002\u5728Lightning Web Components\u4e2d\uff0c\u6211\u4eec\u6ca1\u6709\u7ed1\u5b9a\u63a7\u5236\u5668\u5e76\u5f15\u7528\u9875\u9762\u4e2d\u7684Apex\u65b9\u6cd5\uff0c\u800c\u662f\u5c06\u8fd9\u4e9b\u65b9\u6cd5\u5bfc\u5165JavaScript\u6587\u4ef6\uff0c\u7136\u540e\u5728JavaScript\u4e2d\u8c03\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">queryAccounts<\/span> from '<span class=\"token annotation punctuation\">@salesforce<\/span><span class=\"token operator\">\/<\/span>apex<span class=\"token operator\">\/<\/span><span class=\"token class-name\">AccountListControllerLwc<\/span><span class=\"token punctuation\">.<\/span>queryAccounts<span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4e0eLightning Web\u7ec4\u4ef6\u4e2d\u7684Apex\u65b9\u6cd5\u8fdb\u884c\u4ea4\u4e92\u7684\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a\u8fde\u63a5\u65b9\u6cd5\u6216\u5f3a\u5236\u8c03\u7528\u65b9\u6cd5\u3002\u63a5\u7ebf\u65b9\u6cd5\u5c06\u63a7\u4ef6\u59d4\u6d3e\u7ed9Lightning Web Components\u5f15\u64ce\u5e76\u521b\u5efa\u54cd\u5e94\u670d\u52a1\u3002\u5f3a\u5236\u8c03\u7528Apex\u4f1a\u5bfc\u81f4\u4e00\u6b21\u6027\u8c03\u7528\u3002\u786e\u5207\u5730\u8bf4\uff0c\u4f55\u65f6\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u6bcf\u4e2a\u9009\u9879\u8d85\u51fa\u4e86\u672c\u6a21\u5757\u7684\u8303\u56f4\u3002\u8981\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u00a0Lightning Web Components\u548cSalesforce\u6570\u636e\u00a0\u6a21\u5757\u3002<\/p>\n<h3 id=\"accessing-record-id-in-visualforce-vs-lwc\">\u5728Visualforce vs Lightning Web\u7ec4\u4ef6\u4e2d\u8bbf\u95ee\u8bb0\u5f55ID<\/h3>\n<p>\u5728Visualforce\u4e2d\uff0c\u8bbf\u95eeApex\u63a7\u5236\u5668\u4e2d\u7684\u8bb0\u5f55ID\u975e\u5e38\u7b80\u5355\u3002\u4f7f\u7528\u6807\u51c6\u63a7\u5236\u5668\uff0c\u60a8\u53ef\u4ee5<code>Id<\/code>\u4ece<code>ApexPages.StandardController<\/code>\u5bf9\u8c61\u4e2d\u68c0\u7d22\u8bb0\u5f55\u00a0\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u8003\u8651\u4f7f\u7528\u6b64Apex\u63a7\u5236\u5668\uff0c\u8be5\u63a7\u5236\u5668\u901a\u8fc7\u6269\u5c55\u4f7f\u7528\u201c\u5ba2\u6237\u201d\u6807\u51c6\u63a7\u5236\u5668\u7684\u9875\u9762\u6765\u663e\u793a\u4e0e\u5ba2\u6237\u76f8\u5173\u7684\u8054\u7cfb\u4eba\u3002<\/p>\n<p><strong>AccountControllerVisualforce.cls<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">with<\/span> <span class=\"token namespace\">sharing<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountControllerVisualforce<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Contact<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> contacts <span class=\"token punctuation\">{<\/span> get<span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">private<\/span> set<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ApexPages<\/span><span class=\"token punctuation\">.<\/span><span class=\"token class-name\">StandardController<\/span> standardController<span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">AccountController<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ApexPages<\/span><span class=\"token punctuation\">.<\/span><span class=\"token class-name\">StandardController<\/span> standardController<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>standardController <span class=\"token operator\">=<\/span> standardController<span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>contacts <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Contact<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">queryRelatedContacts<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>contacts <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span>\n            SELECT <span class=\"token class-name\">Name<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Title<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Email<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Phone<\/span>\n            FROM <span class=\"token class-name\">Contact<\/span>\n            WHERE <span class=\"token class-name\">AccountId<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">:<\/span>standardController<span class=\"token punctuation\">.<\/span><span class=\"token function\">getId<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ (2)<\/span>\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n   <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4ee3\u7801\u91cd\u70b9\uff1a<\/p>\n<ul>\n<li>\u7b2c4\u884c\uff1a<code>standardController<\/code>\u56e0\u4e3a\u9875\u9762\u4f7f\u7528Account\u6807\u51c6\u63a7\u5236\u5668\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u6784\u9020\u51fd\u6570\u4e2d\u6536\u5230\u4e00\u4e2a\u5bf9\u8c61\u3002<\/li>\n<li>\u7b2c12\u884c\uff1a\u8981\u83b7\u53d6<code>Id<\/code>\u9875\u9762\u5f15\u7528\u7684Account\u8bb0\u5f55\uff0c\u6211\u4eec<code>getId<\/code>\u5728<code>standardController<\/code>\u5bf9\u8c61\u4e0a\u8c03\u7528\u65b9\u6cd5\u00a0\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u8be2\u8054\u7cfb\u4eba\u4ee5\u83b7\u53d6\u76f8\u5173\u7684\u5ba2\u6237\u8bb0\u5f55\uff0c\u5e76\u4e3a\u5176\u8fc7\u6ee4<code>Id<\/code>\u3002<\/li>\n<\/ul>\n<p>\u5728Lightning Web\u7ec4\u4ef6\u4e2d\uff0c\u8bbf\u95eeApex\u4e2d\u7684\u8bb0\u5f55ID\u4e0d\u592a\u7b80\u5355\u3002\u8981\u8bbf\u95ee\u8bb0\u5f55ID\uff1a<\/p>\n<ol>\n<li>\u516c\u5f00\u7ec4\u4ef6\uff0c\u4f7f\u5176\u5728\u8bb0\u5f55\u9875\u9762\u4e0a\u53ef\u7528\u3002<\/li>\n<li>\u5728JavaScript\u4e2d\uff0c\u58f0\u660e<code>recordId<\/code>\u4e3a\u516c\u5171\u5c5e\u6027\u3002\u7236\u7ec4\u4ef6\uff08\u8bb0\u5f55Flexipage\uff09\u586b\u5145<code>recordId<\/code>\u5c5e\u6027\u7684\u503c\u00a0\u3002<\/li>\n<li><code>recordId<\/code>\u5728Apex\u65b9\u6cd5\u8c03\u7528\u4e2d\u5c06as\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u3002<\/li>\n<\/ol>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<p><strong>accountDetails.js-meta.xml<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">?<\/span>xml version<span class=\"token operator\">=<\/span><span class=\"token string\">\"1.0\"<\/span> encoding<span class=\"token operator\">=<\/span><span class=\"token string\">\"UTF-8\"<\/span> <span class=\"token operator\">?<\/span><span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">LightningComponentBundle<\/span> xmlns<span class=\"token operator\">=<\/span><span class=\"token string\">\"http:\/\/soap.sforce.com\/2006\/04\/metadata\"<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>apiVersion<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token number\">48.0<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>apiVersion<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>isExposed<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token boolean\">true<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>isExposed<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>targets<span class=\"token punctuation\">&gt;<\/span><\/span>\n        <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span>target<span class=\"token punctuation\">&gt;<\/span><\/span>lightning__RecordPage<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>target<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>targets<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span><span class=\"token class-name\">LightningComponentBundle<\/span><span class=\"token operator\">&gt;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>accountDetails.js<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token class-name\">LightningElement<\/span><span class=\"token punctuation\">,<\/span> wire <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">queryRelatedContacts<\/span> from <span class=\"token string\">'@salesforce\/apex\/AccountControllerLwc.queryRelatedContacts'<\/span><span class=\"token punctuation\">;<\/span>\nexport <span class=\"token keyword\">default<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountInfo<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">LightningElement<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation punctuation\">@api<\/span> recordId<span class=\"token punctuation\">;<\/span>\n    <span class=\"token annotation punctuation\">@wire<\/span><span class=\"token punctuation\">(<\/span>queryRelatedContacts<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> accountId<span class=\"token operator\">:<\/span> <span class=\"token string\">'$recordId'<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span>\n    contacts<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>AccountControllerLwc.cls<\/strong><\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">with<\/span> <span class=\"token namespace\">sharing<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountControllerLwc<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation punctuation\">@AuraEnabled<\/span><span class=\"token punctuation\">(<\/span>cacheable<span class=\"token operator\">=<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Contact<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">queryRelatedContacts<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Id<\/span> accountId<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span>\n            SELECT <span class=\"token class-name\">Name<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Title<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Email<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Phone<\/span>\n            FROM <span class=\"token class-name\">Contact<\/span>\n            WHERE <span class=\"token class-name\">AccountId<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">:<\/span>accountId\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u4ee3\u7801\u91cd\u70b9\uff1a<\/p>\n<p><strong>accountDetails.js-meta.xml<\/strong><\/p>\n<ul>\n<li>\u7b2c4-7\u884c\uff1a\u6211\u4eec\u5c06\u5176\u8bbe\u7f6e<code>isExposed<\/code>\u4e3atrue\u5e76\u6dfb\u52a0\u00a0<code>lightning__RecordPage<\/code>\u4e3a\u8be5\u7ec4\u4ef6\u7684\u76ee\u6807\uff0c\u4ee5\u4f7f\u8be5\u7ec4\u4ef6\u5728\u8bb0\u5f55\u9875\u9762\u4e0a\u53ef\u7528\u3002<\/li>\n<\/ul>\n<p><strong>accountDetails.js<\/strong><\/p>\n<ul>\n<li>\u7b2c4\u884c\uff1a\u6211\u4eec\u58f0\u660e\u8be5<code>recordId<\/code>\u5c5e\u6027\uff0c\u5e76\u4f7f\u7528\u4fee\u9970\u5b83\u4ee5\u4f7f\u5176\u516c\u5f00<code>@api<\/code>\u3002Flexipage\u4f1a\u586b\u5145\u00a0<code>recordId<\/code>\u5c5e\u6027\u3002<\/li>\n<li>\u7b2c5-6\u884c\uff1a\u6211\u4eec\u5c06<code>recordId<\/code>\u5c5e\u6027\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u00a0<code>queryRelatedContacts<\/code>Apex\u65b9\u6cd5\u7684\u00a0<code>accountId<\/code>\u53c2\u6570\u3002\uff08\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u00a0<code>@wire<\/code>\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u5f3a\u5236\u6027\u5730\u8c03\u7528Apex\u3002\uff09\u7ed3\u679c\u5b58\u50a8\u5728<code>contacts<\/code>\u5c5e\u6027\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>AccountControllerLwc.cls<\/strong><\/p>\n<ul>\n<li>\u7b2c3\u884c\uff1a<code>queryRelatedContacts<\/code>Apex\u65b9\u6cd5\u63a5\u6536\u00a0<code>accountId<\/code>\u4f5c\u4e3a\u53c2\u6570\u3002\u8bf7\u8bb0\u4f4f\uff0c\u8be5\u65b9\u6cd5\u662f\u65e0\u72b6\u6001\u7684\u3002<\/li>\n<li>\u7b2c4-8\u884c\uff1a\u8be5<code>queryRelatedContacts<\/code>\u65b9\u6cd5\u7528\u4e8e\u00a0<code>accountId<\/code>\u8fd4\u56de\u5ba2\u6237\u7684\u8054\u7cfb\u4eba\u3002<\/li>\n<\/ul>\n<h3 id=\"server-errors-in-visualforce-vs-lwc\">Visualforce\u4e0eLightning Web\u7ec4\u4ef6\u4e2d\u7684\u670d\u52a1\u5668\u9519\u8bef<\/h3>\n<p>\u5728Visualforce\u4e2d\uff0c\u60a8\u4f7f\u7528\u8bf8\u5982<code>&lt;apex:pageMessages&gt;<\/code>\u548c\u4e4b\u7c7b\u7684\u00a0\u6807\u8bb0\u00a0<code>&lt;apex:pageMessage&gt;<\/code>\u4ee5\u5728Visualforce\u9875\u9762\u4e0a\u4ee5\u4e0d\u540c\u65b9\u5f0f\u663e\u793a\u9519\u8bef\u3002\u4e3a\u4e86\u4f7f\u8fd9\u4e9b\u6807\u8bb0\u6b63\u5e38\u5de5\u4f5c\uff0c\u5fc5\u987b\u5728Apex\u63a7\u5236\u5668\u4e2d\u5904\u7406\u5f02\u5e38\u5e76\u5c06\u6d88\u606f\u6dfb\u52a0\u00a0\u5230\u9875\u9762\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token comment\">\/\/ Perform logic that may throw an exception.<\/span>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Exception<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token class-name\">ApexPages<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">addMessages<\/span><span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u5728Lightning Web\u7ec4\u4ef6\u4e2d\uff0c\u6211\u4eec\u5904\u7406JavaScript\u6587\u4ef6\u4e2d\u7684\u5f02\u5e38\u3002\u4f5c\u4e3a\u5f00\u53d1\u4eba\u5458\uff0c\u60a8\u53ef\u4ee5\u51b3\u5b9a\u662f\u5f15\u53d1<code>AuraHandledException<\/code>\u00a0\u5f02\u5e38\u8fd8\u662f\u901a\u8fc7\u5f15\u53d1\u5f02\u5e38\u6216\u81ea\u5b9a\u4e49\u5f02\u5e38\u6765\u8ba9\u5f02\u5e38\u4f20\u64ad\u6216\u66f4\u597d\u5730\u63a7\u5236\u5411\u7528\u6237\u663e\u793a\u7684\u5185\u5bb9\u00a0\u3002\u5f15\u53d1\u8fd9\u6837\u7684\u81ea\u5b9a\u4e49\u5f02\u5e38\uff1a<\/p>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token comment\">\/\/ Perform logic that may throw an exception.<\/span>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Exception<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">MyCustomException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">'Records could not be retrieved at this time. Try again later'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Lightning Web\u7ec4\u4ef6\u548cSalesforce\u6570\u636e\u00a0\u6a21\u5757\u00a0\u4e2d\u66f4\u8be6\u7ec6\u5730\u4ecb\u7ecd\u4e86\u5904\u7406\u670d\u52a1\u5668\u9519\u8bef\u00a0\u3002<\/p>\n<h2 id=\"invoke-apex-to-retrieve-filtered-records\">\u8c03\u7528Apex\u4ee5\u68c0\u7d22\u8fc7\u6ee4\u7684\u8bb0\u5f55<\/h2>\n<p>\u5728\u60a8\u521b\u5efa\u7684accountSearch\u7ec4\u4ef6\u4e2d\uff0c\u8ba9\u6211\u4eec\u68c0\u7d22\u6309\u63d0\u4f9b\u7684\u5458\u5de5\u6570\u91cf\u8fc7\u6ee4\u7684\u5e10\u6237\u5217\u8868\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>\u521b\u5efa\u4e00\u4e2aAccountListControllerLwc Apex\u7c7b\uff1a\n<ol>\n<li>\u5728Visual Studio Code\u547d\u4ee4\u9762\u677f\u4e2d\uff0c\u9009\u62e9\uff08\u6216\u8f93\u5165\uff09\u00a0<strong>SFDX\uff1aCreate Apex Class<\/strong>\uff0c\u7136\u540e\u6309\u00a0<strong>Enter<\/strong>\u3002<\/li>\n<li>\u8f93\u5165\u6587\u4ef6\u540d\uff0c<code>AccountListControllerLwc<\/code>\u7136\u540e\u6309<strong>Enter<\/strong>\u3002<\/li>\n<li>\u63a5\u53d7\u9ed8\u8ba4\u4f4d\u7f6e\uff08\u7c7b\uff09\uff0c\u7136\u540e\u6309\u00a0<strong>Enter<\/strong>\u3002<\/li>\n<\/ol>\n<\/li>\n<li>\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362AccountListControllerLwc\u7c7b\u7684\u5185\u5bb9\uff1a<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">with<\/span> <span class=\"token namespace\">sharing<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AccountListControllerLwc<\/span> <span class=\"token punctuation\">{<\/span>\n    <span class=\"token annotation punctuation\">@AuraEnabled<\/span><span class=\"token punctuation\">(<\/span>cacheable<span class=\"token operator\">=<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Account<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">queryAccountsByEmployeeNumber<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Integer<\/span> numberOfEmployees<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span>\n            SELECT <span class=\"token class-name\">Name<\/span>\n            FROM <span class=\"token class-name\">Account<\/span>\n            WHERE <span class=\"token class-name\">NumberOfEmployees<\/span> <span class=\"token operator\">&gt;=<\/span> <span class=\"token operator\">:<\/span>numberOfEmployees\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n   <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>\u4fdd\u5b58AccountListControllerLwc\u7c7b\u3002<\/li>\n<li>\u5728\u60a8\u7684accountSearch.js\u6587\u4ef6\u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u66ff\u6362\u7b2c\u4e00\u884c\u4ee3\u7801\uff0c\u5bfc\u5165<code>wire<\/code>\u88c5\u9970\u5668\u548c<code>queryAccountsByEmployeeNumber<\/code>Apex\u65b9\u6cd5\uff1a<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token class-name\">LightningElement<\/span><span class=\"token punctuation\">,<\/span> wire <span class=\"token punctuation\">}<\/span> from <span class=\"token string\">'lwc'<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">queryAccountsByEmployeeNumber<\/span> from <span class=\"token string\">'@salesforce\/apex\/AccountListControllerLwc.queryAccountsByEmployeeNumber'<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<ol>\n<li>\u6700\u540e\uff0c\u5728<code>reset<\/code>\u65b9\u6cd5\u4e4b\u540e\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token annotation punctuation\">@wire<\/span><span class=\"token punctuation\">(<\/span>queryAccountsByEmployeeNumber<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> numberOfEmployees<span class=\"token operator\">:<\/span> <span class=\"token string\">'$numberOfEmployees'<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span>\naccounts<span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li>\u4fdd\u5b58accountSearch.js\u6587\u4ef6\u3002<\/li>\n<li>\u5728accountSearch.html\u6587\u4ef6\u4e2d\u7684\u4e4b\u540e<code>&lt;lightning-button&gt;<\/code>\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a\n<div>\n<div class=\"code-toolbar\">\n<pre class=\"line-numbers language-java\"><code class=\"language-java\"><span class=\"token operator\">&lt;<\/span>template <span class=\"token keyword\">if<\/span><span class=\"token operator\">:<\/span><span class=\"token boolean\">true<\/span><span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>accounts<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span>template <span class=\"token keyword\">for<\/span><span class=\"token operator\">:<\/span>each<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>accounts<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">for<\/span><span class=\"token operator\">:<\/span>item<span class=\"token operator\">=<\/span><span class=\"token string\">\"account\"<\/span><span class=\"token operator\">&gt;<\/span>\n         <span class=\"token operator\">&lt;<\/span>p key<span class=\"token operator\">=<\/span><span class=\"token punctuation\">{<\/span>account<span class=\"token punctuation\">.<\/span><span class=\"token class-name\">Id<\/span><span class=\"token punctuation\">}<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">{<\/span>account<span class=\"token punctuation\">.<\/span><span class=\"token class-name\">Name<\/span><span class=\"token punctuation\">}<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>p<span class=\"token operator\">&gt;<\/span>\n    <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>template<span class=\"token operator\">&gt;<\/span>\n<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">\/<\/span>template<span class=\"token operator\">&gt;<\/span> <\/code><\/pre>\n<div class=\"toolbar\">\n<div class=\"toolbar-item\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<li>\u4fdd\u5b58accountSearch.html\u6587\u4ef6\u3002<\/li>\n<li>\u5c06AccountListControllerLwc\u7c7b\u6587\u4ef6\u90e8\u7f72\u5230\u60a8\u7684Trailhead\u6e38\u4e50\u573a\uff1a\u53f3\u952e\u5355\u51fb<strong>classes<\/strong>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u9009\u62e9\u00a0<strong>SFDX\uff1a\u5c06\u6e90\u90e8\u7f72\u5230Org<\/strong>\u3002<\/li>\n<li>\u5c06accountSearch\u7ec4\u4ef6\u6587\u4ef6\u90e8\u7f72\u5230Trailhead Playground\uff1a\u53f3\u952e\u5355\u51fb<strong>accountSearch<\/strong>\u6587\u4ef6\u5939\uff0c\u7136\u540e\u9009\u62e9\u00a0<strong>SFDX\uff1a\u5c06\u6e90\u90e8\u7f72\u5230Org<\/strong>\u3002<\/li>\n<li>\u5982\u679c\u60a8\u7684Trailhead Playground\u5c1a\u672a\u6253\u5f00\uff0c\u8bf7\u6253\u5f00\u5b83\u3002\uff08\u5728\u547d\u4ee4\u9009\u9879\u677f\u4e2d\uff0c\u9009\u62e9\uff08\u6216\u8f93\u5165\uff09<strong>SFDX\uff1aOpen Default Org<\/strong>\u3002\uff09<\/li>\n<li>\u5bfc\u822a\u5230LWC Visualforce 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class=\"screen-reader-text\">\u9002\u7528\u4e8eVisualforce\u5f00\u53d1\u4eba\u5458\u7684Lightning Web\u7ec4\u4ef6 &#8211; \u4f7f\u7528Salesforce\u6570\u636e<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-3271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-visualforcelightning-web"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9002\u7528\u4e8eVisualforce\u5f00\u53d1\u4eba\u5458\u7684Lightning Web\u7ec4\u4ef6 - \u4f7f\u7528Salesforce\u6570\u636e - \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\" 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