首次登录后,React不重定向。但是在强制重定向并再次执行登录操作后进行重定向

时间:2020-01-22 12:25:46

标签: reactjs react-router react-router-v4

我有一个登录表单,单击该表单将调用以下功能。

摘要,从api获取响应(如果有效),设置cookie,然后使用this.props.history.push()

重定向
handleSubmit(event) {
    event.preventDefault();
    const { email, password } = this.state;
    axios({
        method: 'post',
        url: 'http://localhost:3003/login',
        data: qs.stringify({ email, password }),
        headers: {
            'content-type': 'application/x-www-form-urlencoded;charset=utf-8'
        }
    }).then(res => {
        console.log("set cookie")
        //the accestoken is set as a cookie in order to check routes
        Cookies.set('accesstoken', res.data.accesstoken);
        console.log("those are the props")
        console.log(this.props);

        this.props.history.push('/'); //the bug


    }).catch(err => {
        console.log(err)
    })  


}

但是我面临的问题是,当我第一次登录时,重定向将无法工作。它设置所有cookie以及所有cookie,但实际上不会将用户重定向到所需目录。因此,我被迫通过在浏览器搜索栏中输入所需的路线来重定向自己。

这意味着一旦我注销(基本上删除cookie),然后强迫自己进入所需的目录,然后尝试再次登录。这次重定向有效。

它将一直工作到我用ctrl + F5清除所有缓存时,碰巧会导致与第一次登录时相同的问题,因此我不得不再次手动重定向自己。

编辑:这是我的路线的样子

<BrowserRouter>
                <Switch>

                    <Route exact path="/login" render={(props) => <LoginPage {...props}/>} />

                    <PrivateRoute authed={this.state.isAuthenticated} exact path="/" render={(props) => <RegisterPage />} />

                </Switch>
            </BrowserRouter>

那是我的私人路线

import { Route } from 'react-router-dom';

从'react'导入React; 从“反应路由器”导入{重定向};

export default ({ component: Component, render: renderFn, authed,  ...rest }) =>{
  //The privateroute is fed with the auth state of app.js and evaluates the render based on that . If flase always renders "/"
  if (Component){
    return (
      <Route
      {...rest}
      render={props =>
        authed === true ? (
          <Component {...props} />
        ) : (
            <Redirect to={{ pathname: '/login', state: { from: props.location } }} />
          )
      }
    />
    )
  } else {
    return ( //Second case is for iframe based renders
      <Route {...rest} render={props => authed === true ? renderFn(props) : <Redirect to={{ pathname: '/login', state: { from: props.location } }} /> } /> 
      );
  }
}

EDIT2:

app.js

    constructor(props) {
        super(props);

        console.log("PROPS APPJS")
        console.log(props)

        //checks if user is autheticated within the system in order to manage routes
        this.state = {
            authenticationChecked: false,
            isAuthenticated: false 

        }  



    }


    componentDidMount() {
        //calls the auth service to decide the auth state value
        isAuthenticated().then((result) => {
            if (result === true) {
                this.setState({ isAuthenticated: true, authenticationChecked: true})
            } else {
                this.setState({ isAuthenticated: false, authenticationChecked: true})
            }
        });
    }

    login = (email, password) => {
        var thiscomponent  = this;
        axios({
            method: 'post',
            url: 'http://localhost:3003/login',
            data: qs.stringify({ email, password }),
            headers: {
                'content-type': 'application/x-www-form-urlencoded;charset=utf-8'
            }
        }).then(res => {
            console.log("set cookie")
            //the accestoken is set as a cookie in order to check routes
            Cookies.set('accesstoken', res.data.accesstoken);
            console.log("those are the props")
            console.log(this.props);
            this.setState({ isAuthenticated: true }, () => {
               thiscomponent.props.history.push('/'); //the bug
            })

        }).catch(err => {
            console.log(err)
        })  
    }

.
.
.
.
.
.
.
<BrowserRouter>
                <Switch>

                    <PrivateRoute authed={this.state.isAuthenticated} exact path="/" render={(props) => <NewLandingPage login={this.login} {...props} exact />} />
                </Switch>
            </BrowserRouter>

登录页面

 handleSubmit(event) {
        const { email, password } = this.state;
        this.props.login(email, password)
        event.preventDefault();


    }

编辑:登录页面道具

  {"history":{"length":15,"action":"POP","location":{"pathname":"/login","search":"?email=test4%40test.com&password=test","hash":""}},"location":{"pathname":"/login","search":"?email=test4%40test.com&password=test","hash":""},"match":{"path":"/login","url":"/login","isExact":true,"params":{}}}

1 个答案:

答案 0 :(得分:1)

您在哪里以及何时设置isAuthenticated? – lehm.ro 7分钟前
在componentDidMount()期间在我的app.js中使用@ lehm.ro,默认isAuthenticated为false – mouchin777 6分钟前 然后,一旦重定向,就必须使用this.setState使其为true,否则您的私有路由将不会显示。但是为此,您需要将true状态传递给app.js,然后为isAuthenticated true触发一个函数到setState,然后重定向到该路由

设置您的历史记录以在app.js中工作而不会被道具传递: Uncaught TypeError: Cannot read property 'push' of undefined (React-Router-Dom)

为了在store[i++] = src组件中使用string HTML entities ( string $string [, int $flags = ENT_COMPAT | ENT_HTML401 [, string $encoding = ini_get("default_charset") [, bool $double_encode = true ]]] ) ,请与history一起使用。您仅在以下情况下需要使用App: 组件未收到withRouter

如果您的组件是某个产品的嵌套子产品,则可能会发生这种情况 路由器呈现的组件您尚未通过路由器 当组件未链接到路由器时 全部,并与路线分开显示。

withRouter

[文档] [1] onrouter

[1]:https://reacttraining.com/react-router/web/api/withRouter

App.js中的更改

Router props

并添加

import React from 'react';
import { Route , withRouter} from 'react-router-dom';
import Dashboard from './Dashboard';
import Bldgs from './Bldgs';

var selectedTab;

class App extends React.Component {
  constructor(props) {
    super(props);
    this.handleClick = this.handleClick.bind(this);
    selectedTab = 0;
  }

  handleClick(value) {
    selectedTab = value;
    // console.log(selectedTab);
    this.props.history.push('/Bldgs');
    // console.log(this.props);
  }

  render() {
    var _this = this;

    return (
      <div>
        <Route exact path="/" render={(props) => <Dashboard {...props} handleClick={_this.handleClick} />} />
        <Route path="/Bldgs" component={Bldgs} curTab={selectedTab} />
      </div>
    );
  }
}

export default withRouter(App);

和在LoginPage中

<Route exact path="/login" render={(props) => <LoginPage login={this.login} {...props}   />} />
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