react router4+redux实现路由权限控制的方法

总体概述

一个完善的路由系统应该是这样子的，当链接到的组件是需要登录后才能查看，要能够跳转到登录页，然后登录成功后又跳回来之前想访问的页面。这里主要是用一个权限控制类来定义路由路由信息，同时用redux把登录成功后要访问的路由地址给保存起来，登录成功时看redux里面有没有存地址，如果没有存地址就跳转到默认路由地址。

路由权限控制类

在这个方法里面，通过sessionStorage判断是否登录了，如果没有登录，就保存一下当前想要跳转的路由到redux里面。然后跳转到我们登录页。

import React from 'react'
import { Route, Redirect } from 'react-router-dom'
import { setLoginRedirectUrl } from '../actions/loginAction'

class AuthorizedRoute extends React.Component {
  render() {
    const { component: Component, ...rest } = this.props
    const isLogged = sessionStorage.getItem("userName") != null ? true : false;
    if(!isLogged) {
      setLoginRedirectUrl(this.props.location.pathname);
    }
    return (
         {
          return isLogged
              ? 
              : 
        }} />
    )
  }
}

export default AuthorizedRoute

路由定义信息

路由信息也很简单。只是对需要登录后才能查看的路由用AuthorizedRoute定义。

import React from 'react'
import { BrowserRouter, Switch, Route, Redirect } from 'react-router-dom'

import Layout from '../pages/layout/Layout'
import Login from '../pages/login/Login'
import AuthorizedRoute from './AuthorizedRoute'
import NoFound from '../pages/noFound/NoFound'
import Home from '../pages/home/Home'
import Order from '../pages/Order/Order'
import WorkOrder from '../pages/Order/WorkOrder'

export const Router = () => (
    
      

        
          
          {/*注意redirect转向的地址要先定义好路由*/}
          
          
        
      
    
)

登录页

就是把存在redux里面的地址给取出来，登录成功后就跳转过去，如果没有就跳转到默认页面，我这里是默认跳到主页。因为用了antd的表单，代码有点长，只需要看连接redux那两句和handleSubmit里面的内容。

import React from 'react'
import './Login.css'
import { login } from '../../mock/mock'
import { Form, Icon, Input, Button, Checkbox } from 'antd';
import { withRouter } from 'react-router-dom';
import { connect } from 'react-redux'
const FormItem = Form.Item;

class NormalLoginForm extends React.Component {
  constructor(props) {
    super(props);
    this.isLogging = false;
  }
  handleSubmit = (e) => {
    e.preventDefault();
    this.props.form.validateFields((err, values) => {
      if (!err) {
        this.isLogging = true;
        login(values).then(() => {
          this.isLogging = false;
          let toPath = this.props.toPath === '' ? '/layout/home' : this.props.toPath
          this.props.history.push(toPath);
        })
      }
    });
  }
  render() {
    const { getFieldDecorator } = this.props.form;
    return (
        

          
            {getFieldDecorator('userName', {
              rules: [{ required: true, message: 'Please input your username!' }],
            })(
                } placeholder="Username" />
            )}
          
          
            {getFieldDecorator('password', {
              rules: [{ required: true, message: 'Please input your Password!' }],
            })(
                } type="password" placeholder="Password" />
            )}
          
          
            {getFieldDecorator('remember', {
              valuePropName: 'checked',
              initialValue: true,
            })(
                Remember me
            )}
            Forgot password
            
              {this.isLogging ? 'Loging' : 'Login'}
            
            Or register now!
          
        
    );
  }
}

const WrappedNormalLoginForm = Form.create()(NormalLoginForm);

const loginState = ({ loginState }) => ({
  toPath: loginState.toPath
})

export default withRouter(connect(
    loginState
)(WrappedNormalLoginForm))

顺便说一下这里redux的使用吧。我暂时只会基本使用方法：定义reducer，定义actions,创建store，然后在需要使用redux的变量时候去connect一下redux，需要dispatch改变变量时，就直接把actions里面的方法引入，直接调用就可以啦。为了让actions和reducer里面的事件名称对的上，怕打错字和便于后面修改吧，我建了个actionsEvent.js来存放事件名称。
reducer:

import * as ActionEvent from '../constants/actionsEvent'

const initialState = {
  toPath: ''
}

const loginRedirectPath = (state = initialState, action) => {
  if(action.type === ActionEvent.Login_Redirect_Event) {
    return Object.assign({}, state, {
      toPath: action.toPath
    })
  }
  return state;
}

export default loginRedirectPath

actions:

import store from '../store'
import * as ActionEvent from '../constants/actionsEvent'

export const setLoginRedirectUrl = (toPath) => {
  return store.dispatch({
         type: ActionEvent.Login_Redirect_Event,
        toPath: toPath
       })
}

创建store

import { createStore, combineReducers } from 'redux'
import loginReducer from './reducer/loginReducer'

const reducers = combineReducers({
  loginState: loginReducer //这里的属性名loginState对应于connect取出来的属性名
})

const store = createStore(reducers)

export default store

差点忘记说了，路由控制类AuthorizedRoute参考了https://codepen.io/bradwestfall/project/editor/XWNWge?preview_height=50&open_file=src/app.js 这里的代码。感觉这份代码挺不错的，我一开始不会做就是看懂它才有点思路。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。