新版create-react-app+webpack4跨域

src/setupProxy.js  创建文件

const proxy = require('http-proxy-middleware');

module.exports = function(app) {
  app.use(proxy('/api', { 
       target: 'https://www.easy-mock.com/api/' ,
       secure: false,
       changeOrigin: true,
       pathRewrite: {
        "^/api": "/"
       },
      //  http://www.easy-mock.com'
       // cookieDomainRewrite: "http://localhost:3000"
    }));
};

如果不行

package.json 

添加

 "proxy":"http://youAddr.com"

如果还不行

添加

"proxy":{
   "/rank/**":{
      "target":"http://m.kugou.com",
      "changeOrigin": true
    }
  }

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转载自www.cnblogs.com/dianzan/p/11344476.html