在 Reactjs 的页面中添加会话超时

Question

我想在我的登录页面中添加会话超时。在会话超时前几秒钟，页面应显示会话超时警报。之后会话应该超时，用户应该被重定向到初始页面。请帮助我做到这一点。 这是我的 loginform.js 页面

    import React, { Component } from 'react';
import { connect } from 'react-redux';
import { login } from '../../redux/reducer';
import './LoginForm.css';
import { BrowserRouter as Router, Route } from "react-router-dom";

class LoginForm extends Component {

  constructor(props) {
    super(props);
    this.state = {
       timeOut:false,
      warning:false,
    };
    this.onSubmit = this.onSubmit.bind(this);
  }


componentDidMount(){

    setTimeout(() => {
      this.setState({timeOut:true});
    },30000);//if 8sec is your warning time

    setTimeout(() => {
      this.setState({timeOut:true});
    },10000);//if 10sec is your time out
  }

  render() {
    let {username, password} = this.state;
    let {isLoginPending, isLoginSuccess, loginError} = this.props;
     if(this.state.timeOut){
     return  <Route to="/Home" push={true} />
    }
    else{
    return (
      <form name="loginForm" onSubmit={this.onSubmit}>
        <div className="form-group-collection">
          <div className="form-group">
            <label>username:</label>
            <input type="username" name="username" onChange={e => this.setState({username: e.target.value})} value={username}/>
          </div>

          <div className="form-group">
            <label>Password:</label>
            <input type="password" name="password" onChange={e => this.setState({password: e.target.value})} value={password}/>
          </div>
        </div>

        <input type="submit" value="Login" />

        <div className="message">
          { isLoginPending && <div>Please wait...</div> }
          { isLoginSuccess && <div>Success.</div> }
          { loginError && <div>{loginError.message}</div> }
        </div>
      </form>
    )
  }
}
  onSubmit(e) {
    e.preventDefault();
    let { username, password } = this.state;
    this.props.login(username, password);
    this.setState({
      username: '',
      password: ''
    });
  }
}
const Home = () => (
  <div>
    <h2>Welcome Admin </h2>

  </div>
);

const mapStateToProps = (state) => {
  return {
    isLoginPending: state.isLoginPending,
    isLoginSuccess: state.isLoginSuccess,
    loginError: state.loginError
  };
}

const mapDispatchToProps = (dispatch) => {
  return {
    login: (username, password) => dispatch(login(username, password))
  };
}

导出默认连接(mapStateToProps, mapDispatchToProps)(LoginForm); 这是我的 reducer.js 文件

const SET_LOGIN_PENDING = 'SET_LOGIN_PENDING';
const SET_LOGIN_SUCCESS = 'SET_LOGIN_SUCCESS';
const SET_LOGIN_ERROR = 'SET_LOGIN_ERROR';

export function login(username, password) {
  return dispatch => {
    dispatch(setLoginPending(true));
    dispatch(setLoginSuccess(false));
    dispatch(setLoginError(null));

    callLoginApi(username, password, error => {
      dispatch(setLoginPending(false));
      if (!error) {
        dispatch(setLoginSuccess(true));
      } else {
        dispatch(setLoginError(error));
      }
    });
  }
}

function setLoginPending(isLoginPending) {
  return {
    type: SET_LOGIN_PENDING,
    isLoginPending
  };
}

function setLoginSuccess(isLoginSuccess) {
  return {
    type: SET_LOGIN_SUCCESS,
    isLoginSuccess
  };
}

function setLoginError(loginError) {
  return {
    type: SET_LOGIN_ERROR,
    loginError
  }
}

function callLoginApi(username, password, callback) {
  setTimeout(() => {
    if (username === 'admin' && password === 'password') {
      return callback(null);
    } else {
      return callback(new Error('Invalid username and password'));
    }
  }, 1000);
}

export default function reducer(state = {
  isLoginSuccess: false,
  isLoginPending: false,
  loginError: null
}, action) {
  switch (action.type) {
    case SET_LOGIN_PENDING:
      return Object.assign({}, state, {
        isLoginPending: action.isLoginPending
      });

    case SET_LOGIN_SUCCESS:
      return Object.assign({}, state, {
        isLoginSuccess: action.isLoginSuccess
      });

    case SET_LOGIN_ERROR:
      return Object.assign({}, state, {
        loginError: action.loginError
      });

    default:
      return state;
  }
}

这是我的 store.js

import { createStore, applyMiddleware } from 'redux';
import thunk from 'redux-thunk';
import logger from 'redux-logger';
import reducer from './reducer';

const store = createStore(reducer, {}, applyMiddleware(thunk, logger));
export default store;

为了使会话超时起作用，我需要进行哪些更改？

Answer 1

一个非常好的最佳实践是创建一个高阶组件，您可以为每个组件提供您想要的超时功能。以下 Stackoverflow 帖子中发布了一个非常相似的问题和解决方案：React-Timeout HOC

他们正在使用 plougsgaard 提供的 React-Timeout 包：React-Timeout