7.配置代理解决ajax请求跨域问题【React antd】

在ajax请求接口中没有指定域名或者地址的话，默认为localhost

我们是希望从3000 端口 ———> 5000端口【其它任何提供服务的端口即可】访问获取数据出现 404即无法找到，因为我们3000端口的本地没有/login这个路径提供服务，所以报找不到

 

React + antd 解决办法如下：

    1.jsonp ：只能解决get的跨域

    2.cors：让后端配置

    3.配置代理：【推荐使用】【最简单有效的】【开发中使用，前提是用脚手架搭建的】

    在package.json文件中加入如下代码即可：  "proxy": "http://localhost:5000" 具体文件配置内容如下

{
  "name": "react-admin-v5-pro",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@ant-design/icons": "^5.0.1",
    "@testing-library/jest-dom": "^5.16.5",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "antd": "^5.2.2",
    "axios": "^1.3.3",
    "jsonp": "^0.2.1",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-router-dom": "^6.8.1",
    "react-scripts": "5.0.1",
    "store": "^2.0.12",
    "web-vitals": "^2.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "proxy": "http://localhost:5000"
}

  整个项目已经开发完成,包括前后台,需要源码的可以联系: 微信号:guos_123 [添加请注明来意]