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react router4+redux實現(xiàn)路由權(quán)限控制的方法

更新時間：2018年05月03日 09:30:43 作者：supportlss

本篇文章主要介紹了react router4+redux實現(xiàn)路由權(quán)限控制的方法，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

總體概述

一個完善的路由系統(tǒng)應(yīng)該是這樣子的，當(dāng)鏈接到的組件是需要登錄后才能查看，要能夠跳轉(zhuǎn)到登錄頁，然后登錄成功后又跳回來之前想訪問的頁面。這里主要是用一個權(quán)限控制類來定義路由路由信息，同時用redux把登錄成功后要訪問的路由地址給保存起來，登錄成功時看redux里面有沒有存地址，如果沒有存地址就跳轉(zhuǎn)到默認(rèn)路由地址。

路由權(quán)限控制類

在這個方法里面，通過sessionStorage判斷是否登錄了，如果沒有登錄，就保存一下當(dāng)前想要跳轉(zhuǎn)的路由到redux里面。然后跳轉(zhuǎn)到我們登錄頁。

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 (
        <Route {...rest} render={props => {
          return isLogged
              ? <Component {...props} />
              : <Redirect to="/login" />
        }} />
    )
  }
}

export default AuthorizedRoute

路由定義信息

路由信息也很簡單。只是對需要登錄后才能查看的路由用AuthorizedRoute定義。

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 = () => (
    <BrowserRouter>
      <div>
        <Switch>
          <Route path="/login" component={Login} />
          <Redirect from="/" exact to="/login"/>{/*注意redirect轉(zhuǎn)向的地址要先定義好路由*/}
          <AuthorizedRoute path="/layout" component={Layout} />
          <Route component={NoFound}/>
        </Switch>
      </div>
    </BrowserRouter>
)

登錄頁

就是把存在redux里面的地址給取出來，登錄成功后就跳轉(zhuǎn)過去，如果沒有就跳轉(zhuǎn)到默認(rèn)頁面，我這里是默認(rèn)跳到主頁。因為用了antd的表單，代碼有點長，只需要看連接redux那兩句和handleSubmit里面的內(nèi)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 (
        <Form onSubmit={this.handleSubmit.bind(this)} className="login-form">
          <FormItem>
            {getFieldDecorator('userName', {
              rules: [{ required: true, message: 'Please input your username!' }],
            })(
                <Input prefix={<Icon type="user" style={{ color: 'rgba(0,0,0,.25)' }} />} placeholder="Username" />
            )}
          </FormItem>
          <FormItem>
            {getFieldDecorator('password', {
              rules: [{ required: true, message: 'Please input your Password!' }],
            })(
                <Input prefix={<Icon type="lock" style={{ color: 'rgba(0,0,0,.25)' }} />} type="password" placeholder="Password" />
            )}
          </FormItem>
          <FormItem>
            {getFieldDecorator('remember', {
              valuePropName: 'checked',
              initialValue: true,
            })(
                <Checkbox>Remember me</Checkbox>
            )}
            <a className="login-form-forgot" href="">Forgot password</a>
            <Button type="primary" htmlType="submit" className="login-form-button"
                loading={this.isLogging ? true : false}>
              {this.isLogging ? 'Loging' : 'Login'}
            </Button>
            Or <a href="">register now!</a>
          </FormItem>
        </Form>
    );
  }
}

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

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

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

順便說一下這里redux的使用吧。我暫時只會基本使用方法：定義reducer，定義actions,創(chuàng)建store，然后在需要使用redux的變量時候去connect一下redux，需要dispatch改變變量時，就直接把actions里面的方法引入，直接調(diào)用就可以啦。為了讓actions和reducer里面的事件名稱對的上，怕打錯字和便于后面修改吧，我建了個actionsEvent.js來存放事件名稱。
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
       })
}

創(chuàng)建store

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

const reducers = combineReducers({
  loginState: loginReducer //這里的屬性名loginState對應(yīng)于connect取出來的屬性名
})

const store = createStore(reducers)

export default store

差點忘記說了，路由控制類AuthorizedRoute參考了https://codepen.io/bradwestfall/project/editor/XWNWge?preview_height=50&open_file=src/app.js 這里的代碼。感覺這份代碼挺不錯的，我一開始不會做就是看懂它才有點思路。

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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