Flask接口签名sign原理与实例代码浅析
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2023-02-06
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 = () => (
)
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.isLoggihttp://ng = 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 === '' ? '/layouthttp:///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,
})(
)}
loading={this.isLogging ? true : false}>
{this.isLogging ? 'Loging' : 'Login'}
);
}
}
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http://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。
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