{"id":38215,"date":"2023-10-03T15:33:27","date_gmt":"2023-02-13T03:22:26","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bb%8e%e5%89%8d%e7%ab%af%e8%bf%9b%e8%a1%8cweb%e6%8a%93%e5%8f%96%ef%bc%88react%e5%92%8cexpress%e8%bf%9e%e6%8e%a5%ef%bc%89%e3%80%82\/"},"modified":"2024-05-04T02:39:59","modified_gmt":"2024-05-03T18:39:59","slug":"%e4%bb%8e%e5%89%8d%e7%ab%af%e8%bf%9b%e8%a1%8cweb%e6%8a%93%e5%8f%96%ef%bc%88react%e5%92%8cexpress%e8%bf%9e%e6%8e%a5%ef%bc%89%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bb%8e%e5%89%8d%e7%ab%af%e8%bf%9b%e8%a1%8cweb%e6%8a%93%e5%8f%96%ef%bc%88react%e5%92%8cexpress%e8%bf%9e%e6%8e%a5%ef%bc%89%e3%80%82\/","title":{"rendered":"\u4ece\u524d\u7aef\u8fdb\u884cWeb\u6293\u53d6\uff08react\u548cexpress\u8fde\u63a5\uff09"},"content":{"rendered":"<p>\u5f53\u5c1d\u8bd5\u4ece\u524d\u7aef\u8fdb\u884cWeb\u722c\u53d6\u65f6\uff0c\u5f80\u5f80\u4f1a\u9047\u5230CORS\u9519\u8bef&#8230;<br \/>\n\u867d\u7136\u6709\u65f6\u80fd\u591f\u901a\u8fc7\u5bf9\u65b9\u7684\u8bbe\u7f6e\u6765\u907f\u514d\uff0c\u4f46\u4ec5\u4f9d\u9760\u524d\u7aef\u662f\u65e0\u6cd5\u89e3\u51b3\u7684&#8230;<br \/>\n\u56e0\u6b64\uff0c\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528express\u7b80\u5355\u5730\u521b\u5efa\u4e00\u4e2a\u540e\u7aef\u670d\u52a1\u5668\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#8230;<br \/>\n\u6211\u4eec\u4f7f\u7528jsdom\u6765\u8fdb\u884c\u722c\u53d6\u64cd\u4f5c&#8230;<br \/>\n\u5728\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u968f\u673a\u83b7\u53d6\u4e86Yahoo\u65b0\u95fb\u7684\u56fe\u7247&#8230;<\/p>\n<p>\u5982\u679c\u60a8\u77e5\u9053\u5982\u4f55\u5728\u524d\u7aef\u89e3\u51b3CORS\u9519\u8bef\uff0c\u8bf7\u544a\u8bc9\u6211\u4e00\u79cd\u65b9\u6cd5\uff01<\/p>\n<h1>\u6267\u884c\u73af\u5883 (sh\u00ed sh\u012b<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Windows11<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">node (v18.17.1) \u203b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">react@18.2.0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">express@4.18.2<\/ul>\n<h1>\u6b65\u9aa4<\/h1>\n<h2>\u521b\u5efa\u548c\u79fb\u52a8react\u9879\u76ee (create-react-app)<\/h2>\n<p>\u4f7f\u7528create-react-app\u5de5\u5177\u521b\u5efa\u9879\u76ee<br \/>\n\u9879\u76ee\u540d\u79f0\u4efb\u610f\uff01<\/p>\n<ul class=\"post-ul\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4f5c\u6210<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">npx<\/span> <span class=\"nx\">create-react-app<\/span> <span class=\"nx\">project-name<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u79fb\u52d5<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">cd<\/span> <span class=\"nx\">project-name<\/span>\r\n<\/code><\/pre>\n<h2>\u5b89\u88c5\uff08\u540e\u7aef\u670d\u52a1\u5668\uff09<\/h2>\n<p>\u9664\u4e86\u5b89\u88c5express\u4e4b\u5916\uff0c\u8fd8\u5b89\u88c5\u4e86\u5176\u4ed6\u53ef\u4ee5\u65b9\u4fbf\u5f00\u53d1\u7b49\u7684\u4e1c\u897f\uff1a<br \/>\n&#8211; nodemon\uff1a\u7528\u4e8e\u5728\u542f\u52a8\u540e\u81ea\u52a8\u91cd\u65b0\u52a0\u8f7d\u540e\u7aef\uff08express\uff09\u4ee3\u7801\u3002<br \/>\n&#8211; npm-run-all\uff1a\u7528\u4e8e\u540c\u65f6\u542f\u52a8\u524d\u7aef\uff08react\uff09\u548c\u540e\u7aef\uff08express\uff09\u3002<br \/>\n&#8211; pino\uff1a\u7528\u4e8e\u8f93\u51faexpress\u7684\u65e5\u5fd7\u3002<\/p>\n<ul class=\"post-ul\">express<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">i<\/span> <span class=\"nx\">express<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u8d77\u52d5\u6642\u53cd\u6620\u30fb\u540c\u6642\u5b9f\u884c\u30fb\u30ed\u30b0\u51fa\u529b<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">i<\/span> <span class=\"nx\">nodemon<\/span> <span class=\"nx\">npm-run-all<\/span> <span class=\"nx\">express-pino-logger<\/span> <span class=\"nx\">pino-colada<\/span>\r\n<\/code><\/pre>\n<h2>\u5b89\u88c5jsdom\uff08\u7f51\u7edc\u722c\u53d6\uff09<\/h2>\n<p>\u5b89\u88c5jsdom\u4ee5\u8fdb\u884cWeb\u722c\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">i<\/span> <span class=\"nx\">jsdom<\/span>\r\n<\/code><\/pre>\n<h2>\u521b\u5efa\u540e\u7aef\u670d\u52a1\u5668\uff08express\u6846\u67b6\uff09<\/h2>\n<p>\u53ef\u4ee5\u5728\u4efb\u4f55\u5730\u65b9\u521b\u5efa\u6267\u884c\u6a21\u5757\u90fd\u53ef\u4ee5\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u9879\u76ee\u7684\u6839\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aserver\u7684\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5728\u8be5\u6587\u4ef6\u5939\u4e0b\u521b\u5efa\u540d\u4e3aserver.js\u7684\u6a21\u5757\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5728\u9879\u76ee\u7684\u6839\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a&#8221;server&#8221;\u7684\u6587\u4ef6\u5939\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>\u5728&#8221;server&#8221;\u6587\u4ef6\u5939\u7684\u6839\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a&#8221;server.js&#8221;\u7684\u6587\u4ef6\u3002<\/p>\n<p>server.js<br \/>\n\/\/ \u5bfc\u5165\u5e93<br \/>\nconst express = require(&#8216;express&#8217;);<br \/>\nconst pino = require(&#8216;express-pino-logger&#8217;);<br \/>\nconst { JSDOM } = require(&#8216;jsdom&#8217;);<\/p>\n<p>\/\/ \u521b\u5efaexpress\u5e94\u7528<br \/>\nconst app = express();<br \/>\napp.use(express.urlencoded({ extended: false }));<br \/>\napp.use(pino());<\/p>\n<p>\/\/ \u8fd4\u56de\u7b80\u5355\u7684JSON API<br \/>\napp.get(&#8216;\/api\/sample1&#8217;, async (req, res) =&gt; {<br \/>\nres.setHeader(&#8216;Content-Type&#8217;, &#8216;application\/json&#8217;);<br \/>\nres.send(JSON.stringify({ sample: &#8216;\u4f60\u597d\uff0c\u4e16\u754c\uff01&#8217; }));<br \/>\n});<\/p>\n<p>\/\/ \u7b80\u5355\u5730\u8fdb\u884c\u7f51\u9875\u6293\u53d6\u5e76\u8fd4\u56deJSON API<br \/>\napp.get(&#8216;\/api\/sample2&#8217;, async (req, res) =&gt; {<br \/>\n\/\/ \u4f7f\u7528fetch\u83b7\u53d6\u7f51\u9875\u5e76\u751f\u6210DOM<br \/>\nconst url = &#8216;https:\/\/news.yahoo.co.jp\/&#8217;;<br \/>\nconst urlRes = await fetch(url);<br \/>\nconst urlHtml = await urlRes.text();<br \/>\nconst dom = new JSDOM(urlHtml);<br \/>\n\/\/ \u4f7f\u7528querySelector\u7b49\u65b9\u6cd5\u83b7\u53d6\u6240\u9700\u4fe1\u606f<br \/>\nconst imgSrcs = [&#8230;dom.window.document.querySelectorAll(&#8216;section img&#8217;)].map(<br \/>\n(img) =&gt; img.src<br \/>\n);<\/p>\n<p>res.setHeader(&#8216;Content-Type&#8217;, &#8216;application\/json&#8217;);<br \/>\nres.send(JSON.stringify({ sample: imgSrcs }));<br \/>\n});<\/p>\n<p>\/\/ \u542f\u52a8\u670d\u52a1\u5668<br \/>\napp.listen(3001, () =&gt;<br \/>\nconsole.log(&#8216;Express\u670d\u52a1\u5668\u6b63\u5728localhost:3001\u4e0a\u8fd0\u884c&#8217;)<br \/>\n);<\/p>\n<h2>\u5bf9\u670d\u52a1\u5668\u8fdb\u884c\u4ee3\u7406\u8bbe\u7f6e<\/h2>\n<p>\u5728package.json\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee3\u7406\u8bbe\u7f6e\uff0c\u53ef\u4ee5\u5728\u4efb\u610f\u4f4d\u7f6e\u6dfb\u52a0\u3002<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"nl\">\"proxy\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"http:\/\/localhost:3001\"<\/span>\r\n<\/code><\/pre>\n<h2>\u6dfb\u52a0\u524d\u7aef\u548c\u540e\u7aef\u7684\u542f\u52a8\u811a\u672c<\/h2>\n<p>\u5728package.json\u6587\u4ef6\u4e2d\u6dfb\u52a0\u540e\u7aef\uff08server.js\uff09\u7684\u542f\u52a8\u811a\u672c\u4ee5\u53ca\u540c\u65f6\u542f\u52a8\u524d\u540e\u7aef\u7684\u811a\u672c\u3002<\/p>\n<p>npm run server : \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u8d77\u52d5\u3059\u308b\u3068\u304d\u306e\u30b3\u30de\u30f3\u30c9<\/p>\n<p>npm run start-all : \u30d5\u30ed\u30f3\u30c8\u30fb\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u540c\u6642\u8d77\u52d5\u3059\u308b\u3068\u304d\u306e\u30b3\u30de\u30f3\u30c9<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"nl\">\"scripts\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"start\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"react-scripts start\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"build\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"react-scripts build\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"test\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"react-scripts test\"<\/span><span class=\"p\">,<\/span>\r\n<span class=\"hdl\"><span class=\"err\">-<\/span>    <span class=\"nl\">\"eject\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"react-scripts eject\"<\/span>\r\n<\/span><span class=\"hil\"><span class=\"err\">+<\/span>    <span class=\"nl\">\"eject\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"react-scripts eject\"<\/span><span class=\"p\">,<\/span>\r\n<\/span><span class=\"hil\"><span class=\"err\">+<\/span>    <span class=\"nl\">\"server\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"nodemon server\/server.js | pino-colada\"<\/span><span class=\"p\">,<\/span>\r\n<\/span><span class=\"hil\"><span class=\"err\">+<\/span>    <span class=\"nl\">\"start-all\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"run-p server start\"<\/span>\r\n<\/span>  <span class=\"p\">}<\/span><span class=\"err\">,<\/span>\r\n<\/code><\/pre>\n<h2>\u7528React\u524d\u7aef\u6267\u884cAPI\u7684\u7b80\u6613\u793a\u4f8b<\/h2>\n<p>App.js\u6587\u4ef6\u4e2d\u5305\u542b\u4e86\u6267\u884c\u4ee5\u4e0b\u540e\u7aefAPI\u7684\u793a\u4f8b\u4ee3\u7801<br \/>\n\u53ef\u4ee5\u5b8c\u5168\u66ff\u6362\u539f\u6709\u7684\u4ee3\u7801\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\/api\/sample1 : \u7c21\u6613\u306a JSON \u3092\u8fd4\u3059API<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\/api\/sample2 : \u7c21\u6613\u306bWeb\u30b9\u30af\u30ec\u30a4\u30d4\u30f3\u30b0\u3057\u305f\u5024\u3092\u8a2d\u5b9a\u3057\u305f JSON \u3092\u8fd4\u3059API<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">useState<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">react<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">function<\/span> <span class=\"nf\">App<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">sample1<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setSample1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">''<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">sample2<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setSample2<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">''<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"c1\">\/\/ api\/sample1 \u5b9f\u884c\u3057\u3066 sample1 \u306b\u8a2d\u5b9a\u3059\u308b\u51e6\u7406<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">getApiSample1<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async <\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">json<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await <\/span><span class=\"p\">(<\/span><span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">\/api\/sample1<\/span><span class=\"dl\">'<\/span><span class=\"p\">)).<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"nf\">setSample1<\/span><span class=\"p\">(<\/span><span class=\"nx\">json<\/span><span class=\"p\">.<\/span><span class=\"nx\">sample<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">};<\/span>\r\n  <span class=\"c1\">\/\/ api\/sample2 \u5b9f\u884c\u3057\u3066 sample2 \u306b\u8a2d\u5b9a\u3059\u308b\u51e6\u7406<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">getApiSample2<\/span> <span class=\"o\">=<\/span> <span class=\"k\">async <\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">json<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await <\/span><span class=\"p\">(<\/span><span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">\/api\/sample2<\/span><span class=\"dl\">'<\/span><span class=\"p\">)).<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">imgs<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">json<\/span><span class=\"p\">.<\/span><span class=\"nx\">sample<\/span><span class=\"p\">.<\/span><span class=\"nf\">map<\/span><span class=\"p\">((<\/span><span class=\"nx\">src<\/span><span class=\"p\">,<\/span> <span class=\"nx\">i<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\r\n        <span class=\"o\">&lt;&gt;<\/span>\r\n          <span class=\"o\">&lt;<\/span><span class=\"nx\">img<\/span> <span class=\"nx\">src<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">src<\/span><span class=\"p\">}<\/span> <span class=\"nx\">alt<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">i<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;&lt;<\/span><span class=\"sr\">\/img<\/span><span class=\"err\">&gt;\r\n<\/span>        <span class=\"o\">&lt;<\/span><span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span>      <span class=\"p\">);<\/span>\r\n    <span class=\"p\">});<\/span>\r\n    <span class=\"nf\">setSample2<\/span><span class=\"p\">(<\/span><span class=\"nx\">imgs<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">};<\/span>\r\n\r\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\r\n    <span class=\"o\">&lt;&gt;<\/span>\r\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">getApiSample1<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"kd\">get<\/span> <span class=\"nx\">api<\/span> <span class=\"nx\">sample1<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\r\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"nx\">sample1<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">getApiSample2<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"kd\">get<\/span> <span class=\"nx\">api<\/span> <span class=\"nx\">sample2<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\r\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"nx\">sample2<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"k\">default<\/span> <span class=\"nx\">App<\/span><span class=\"p\">;<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u786e\u8ba4\u6267\u884c<\/h2>\n<p>\u540c\u65f6\u8fd0\u884c\u524d\u7aef\u548c\u540e\u7aef\u540e\uff0c\u5728\u6d4f\u89c8\u5668\u4e0a\u4f1a\u663e\u793a\u4ee5\u4e0b\u753b\u9762\u3002\u5982\u679c\u753b\u9762\u6ca1\u6709\u663e\u793a\u51fa\u6765\uff0c\u8bf7\u5728\u6d4f\u89c8\u5668\u4e2d\u8bbf\u95ee htttp:\/\/localhost:3000\u3002<\/p>\n<ul class=\"post-ul\">\u5b9f\u884c\u30b3\u30de\u30f3\u30c9<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">run<\/span> <span class=\"nx\">start-all<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d32d237434c4406c63615\/38-0.png\" alt=\"image.png\" \/><\/div>\n<h1>\u5982\u679c\u5728\u6267\u884cReact\u65f6\u51fa\u73b0\u9519\u8bef<\/h1>\n<p>\u6211\u8fdb\u884c\u5f00\u53d1\u65f6\uff0c\u51fa\u73b0\u4e86\u4ee5\u4e0b\u9519\u8bef\uff0c\u539f\u56e0\u5c1a\u4e0d\u660e\u786e\u3002\u53ef\u80fd\u4ece\u4e00\u5f00\u59cb\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u66f4\u7a33\u5b9a\u3002\u5728 React \u4e2d\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u5f0f\u6765\u4ecb\u7ecd\uff1a<br \/>\nhttps:\/\/create-react-app.dev\/docs\/proxying-api-requests-in-development\/<\/p>\n<pre class=\"post-pre\"><code><span class=\"go\">Invalid options object. Dev Server has been initialized using an options object that does not match the API schema.\r\n - options.allowedHosts[0] should be a non-empty string.\r\n<\/span><\/code><\/pre>\n<h2>\u5b89\u88c5 http-proxy-middleware<\/h2>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">i<\/span> <span class=\"nx\">http-proxy-middleware<\/span>\r\n<\/code><\/pre>\n<h2>\u4ecepackage.json\u4e2d\u5220\u9664\u4ee3\u7406\u8bbe\u7f6e<\/h2>\n<pre class=\"post-pre\"><code><span class=\"hdl\"><span class=\"o\">- <\/span> <span class=\"nl\">\"proxy\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"http:\/\/localhost:3001\"<\/span>\r\n<\/span><\/code><\/pre>\n<h2>\u521b\u5efa setupProxy.js<\/h2>\n<p>\u5728src\u6587\u4ef6\u5939\u7684\u76f4\u63a5\u4e0b\u65b9\u521b\u5efa\u4e00\u4e2a\u540d\u4e3asetupProxy.js\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">createProxyMiddleware<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">http-proxy-middleware<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nx\">module<\/span><span class=\"p\">.<\/span><span class=\"nx\">exports<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">app<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nf\">use<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"dl\">'<\/span><span class=\"s1\">\/api\/*<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nf\">createProxyMiddleware<\/span><span class=\"p\">({<\/span>\r\n      <span class=\"na\">target<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">http:\/\/localhost:3001<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"na\">changeOrigin<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">})<\/span>\r\n  <span class=\"p\">);<\/span>\r\n<span class=\"p\">};<\/span>\r\n<\/code><\/pre>\n<h2>\u786e\u8ba4\u6267\u884c<\/h2>\n<p>\u53ea\u8981\u6267\u884c\u65b9\u6cd5\u4e0e\u4ee5\u5f80\u76f8\u540c\uff0c\u5e76\u4e14\u80fd\u591f\u65e0\u8bef\u5730\u6267\u884c\uff0c\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">npm<\/span> <span class=\"nx\">run<\/span> <span class=\"nx\">start-all<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u5c1d\u8bd5\u4ece\u524d\u7aef\u8fdb\u884cWeb\u722c\u53d6\u65f6\uff0c\u5f80\u5f80\u4f1a\u9047\u5230CORS\u9519\u8bef&#8230; \u867d\u7136\u6709\u65f6\u80fd\u591f\u901a\u8fc7\u5bf9\u65b9\u7684\u8bbe\u7f6e\u6765\u907f\u514d\uff0c\u4f46\u4ec5\u4f9d\u9760 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38215","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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