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跨域解决方案

jsonp(模拟get)/CORS(跨域资源共享)靠死/代理/iframe/postMessage/window.name/WebSocket

react的代理实现跨域

在配置在src/setupProxy.js文件，并通过npm安装http-proxy-middleware,代理中间件模块

创建 src/setupProxy.js

安装模块

npm i -S http-proxy-middleware

const {createProxyMiddleware: proxy} = require('http-proxy-middleware')

module.exports = app => {
  app.use('/api', proxy({
    target: 'http://localhost',
    changeOrigin: true,
    pathRewrite: {
      '^/api': ''
    }
  }))
}