react 路由重定向、动态跳转

阳光穿透心脏的1/2处 2021-07-24 18:52 853阅读 0赞

重定向:
    	1、引入
    		import {BrowserRouter as Router,Link,Route,Redirect,Switch} from 'react-router-dom'
    	2、使用
    		类似于方法,设置好后自动执行
    		<Redirect to='路由路径' ></Redirect>
    
    动态跳转
    	this.props.history.push('路由路径',{参数键值对}) 通过this.props.location.state.键名获取
    					  .push({和Link中to属性为对象的格式一样的对象})
    	
    	this.props.history.go(数值);  根据栈来跳转
    	this.props.history.goBack();
    	this.props.history.goForward();

代码示例:

import React,{ Component} from 'react'
    //import {Route,BrowserRouter,Link} from 'react-router-dom'
    //将BrowserRouter重命名为Router
    //Redirect重定向需要引入
    import { BrowserRouter as Router,Link,Route,Redirect,Switch} from 'react-router-dom'
    import {  Button } from 'antd';
    import './App.css';
    function Login(props)
    { 
      console.log(props.location.state.loginState)
      if(props.location.state.loginState=='success')
      { 
          return <Redirect to='/admin'></Redirect>
      }else{ 
          return <Redirect to='/login'></Redirect>
      }
    }
    
    let firm=()=>{ 
      let obj={ pathname:'/logInfo',state:{ loginState:'success'}}
      return (
          <div>
            <h1>表单</h1>
            <Link to={ obj} >验证页面</Link>
    
          </div>
        )
    }
    class Child extends Component{ 
      constructor()
      { 
          super();
      }
      render()
      { 
        return(
          <div>
              <button onClick={ this.jump.bind(this)}>跳转到首页</button>
          </div>
        )
      }
      jump()
      { 
    
        this.props.history.push('/',{ msg:'来自child'})
      { /* this.props.history.push(传入和to属性格式一样的对象) this.props.history.go(1); this.props.history.goBack(); this.props.history.goForward(); */}
      }
    }
    export default class App extends Component{ 
    	  constructor()
        { 
          super();
        }
        render()
        { 
            return(
    
                <div>
                    <Router>
                      <div>
                        <Switch>
                          <Route exact path="/" component={ (props)=>{ console.log(props.location.state.msg); return <div>首页</div>}}></Route>
                          <Route path="/form" component={ firm}></Route>
                          <Route path="/login" component={ ()=><div>登录</div>}></Route>
                          <Route path="/logInfo" component={ Login}></Route>
                          <Route path="/admin" component={ ()=><div>admin</div>}></Route>
                          <Route path="/admin" component={ ()=><div>admin</div>}></Route>
                          <Route path="/child" component={ Child}></Route>
                        </Switch>
                      </div>
                    </Router>
                </div>
            )
        }
    
    }