react axios的跨域请求

1.安装npm install axios

2.在package.json下添加

"proxy": {
  "/app": {
    "target": "http://open.douyucdn.cn",
    "changeOrigin": true
  }
}

3新增一个http.js文件

import axios from 'axios';
axios.defaults.baseURL = 'http://open.douyucdn.cn';
axios.defaults.withCredentials = true;
axios.defaults.timeout = 100000;
let http = {
  post:'',
  get:''
};
http.post = function (api ,data) {
    let params =JSON.stringify(data);
    return new Promise((resolve,reject) =>{
      axios.post(api, params).then(res=>{
          resolve(res);
      })
    })
};
http.get = function (api ,data) {
    let params =JSON.stringify(data);
    return new Promise((resolve,reject) =>{
        axios.get(api, params).then(res=>{
            resolve(res);
        })
    })
};
export default http;
4.进行数据请求

import React,{Component} from 'react';
import http from '../../libs/http'
class Footer extends React.Component{
    async getStudentList(){
        const res = await http.post('/app/mobile/login/',{name:'boonook',passworld:'123456'});
        console.log(res);
    }
    componentDidMount(){
        this.getStudentList();
    }
    render(){
        return(
            <div>axios封装</div>
        )
    }
}
export default Footer;