react之异步请求数据,render先行渲染报错,未拿到数据

import React from 'react' import {connect} from 'react-redux' import { Redirect} from 'react-router-dom' import axios from 'axios' import {login} from './Auth.redux.js'//两个reducers 每个reducers都有一个state @connect( (state)=>state.auth, {login} ) class Auth extends React.Component{ constructor(props){ super(props) this.state={ data:{}, success:false//解决方法设置一个开关,当数据请求成功,置为true } } componentDidMount(){ axios.get('/data') .then(res=>{ if(res.status===200){ this.setState({data:res.data,success:true}) console.log(this.state.data[0].user) debugger } }) } render(){ return (我的名字是{this.state.success?this.state.data[0].user:''} {this.props.isAuth?:null} 你没有权限需要登录 ) } }export default Auth

【react之异步请求数据,render先行渲染报错,未拿到数据】转载于:https://www.cnblogs.com/raind/p/9607491.html

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