react 路由 react-router-dom

import React from 'react';
import DataList from './data'
import Tr from './Tr'
// import One from '../One'
import User from '../User'
import Two from '../Two'
import NotFound from '../NotFound';
import {Redirect,NavLink,Route,Switch} from 'react-router-dom';
//Redirect 重定向标签 NavLink路由跳转标签 Route显示路由的窗口 Switch用来保证路由窗口只显示一个路由标签 用来包裹Route标签
class Tab extends React.Component{
  render(){
      return (
         <div>
            {
               <div>
　　　　　　　　　　//路由书写的规则 exact是用来精确匹配 component={组件名}
               <NavLink to='/two/companies'>two</NavLink>
               <NavLink to='/one/users'>one</NavLink>
               <Switch>
               <Redirect exact from='/' to='/one/companies' />
               <Route path='/one/:type?' component={User}/>
               <Route path='/two/:id?' component={Two}/>
               <Route component={NotFound}></Route>
               </Switch>
               </div>
            }</div>
      )
  }
}

export default Tab;

子路由：

import React from 'react';
import axios from 'axios';
import OneTwo from './OneTwo'
import {Switch,NavLink,Route} from 'react-router-dom';
import NotFound from './NotFound'
class User extends React.Component{
    constructor(props){
        super(props);
        this.state = {
            list : []
        }
    };
    componentDidMount(){ //组件挂载以后函数 通过this.props.match.params获取路由传参的值。
        let {type} = this.props.match.params;
        this.getData(type);
    };
    getData(id){
        axios.get('http://localhost:4000/'+id)
        .then((res)=>{
            this.setState({
                list:res.data
            })
        })
    };
    componentWillReceiveProps(){ //组件将更新props的值
        let {type} = this.props.match.params;
        this.getData(type);
    }
    render(){
        let {list} = this.state;
        return (
            <div>
                {list.map((item)=>{
                    return (
                        <div key={item.id}>
　　　　　　　　　　　　　　　　　　//路由字符串的写法拼接写法 对象写法在下面
                            <NavLink to={this.props.match.url+'/'+item.id}>{item.name}</NavLink>
                        </div>
                    )
                })}
               <Switch>
　　　　　　　　　　　　//组件该显示的位置要放出循环外
                <Route path="/one/users/:userid"  component={OneTwo}/>  
               </Switch>
            </div>
        )
    }
}

export default User;

详情组件：

import React from 'react';
import axios from 'axios';
class OneTwo extends React.Component{
    constructor(props){
        super(props);
        this.state = {
            list : {}
        }
    }
    getData(id){
　　　　//将路由传来的id进行匹配拿到数据
        axios.get('http://localhost:4000/users/'+id)
        .then((res)=>{
            this.setState({
                list: res.data
            })
        })
    }
    componentDidMount(){
        let {userid} = this.props.match.params;
        this.getData(userid);
    };
    componentWillReceiveProps(){
        let {userid} = this.props.match.params;
        this.getData(userid);
    }
    render(){
        let {list} = this.state;
        return (
            <div>
　　　　　　　　　　//枚举对象返回一个key值数组
                {Object.keys(list).map((item)=>{
                    return (
                        <div key={item}>
                            {item}:{list[item]}
                        </div>
                    )
                })}
            </div>
        )
    }
}

export default OneTwo;

感觉就和vue一样