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在react项目中使用redux的简单案例
脚手架 create-react-app
-- action.js 动作 --reducers 计算属性集合文件夹 -- index.js 计算模块出口 -- user.js 计算模块1 -- test.js 计算模块2 -- store.js redux的store 出口 -- type.js action 动作名称类型
结构案例
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1.action.js 动作整合模块
import types from ‘../type.js‘; //View视图 要发送多少种消息，这里就封装多少种 // 调用 user.js 中的计算属性 export const userAction=(data)=>({type:types.USER,data}); // 调用 token.js 中的计算属性 export const userTokenAction=(data)=>({type:types.TOKEN,data});
2.type.js 常量名称类别封装
export default { TOKEN:‘TOKEN‘, USER:‘USER‘, USER_NAME:‘USER_NAME‘, }
3. reducers 计算属性整合
user.js 计算模块1 (PS: 计算模块的js 文件 分成多个 还是 写成一个 随自身需求，这里举例 只写 一个,token.js 和 user.js 是一致的)
import { createStore,combineReducers } from ‘redux‘;
import _type from ‘../type.js‘;
//reducer函数会接受两个参数,分别为之前的 (状态)state, 动作对象(action)
const initState = ‘初始化数值‘;
export default function User(state = initState ,action){
const {type,data} =action;
// console.log("触发____");
switch(type){
case _type.USER:
//最好是新生成的数据
return {...data};
case _type.USER_NAME:
return ‘111‘;
case _type.TOKEN:
return state + ‘222‘;
default:
return state;
}
}
index.js 计算模块出口
import { createStore,applyMiddleware,combineReducers} from ‘redux‘;
import User from ‘./user‘;
import Token from ‘./token‘;
//合并多个reducer
const allReducers=combineReducers({
user:User,
token:Token,
});
export default allReducers;
4.redux 导出
import { createStore,applyMiddleware,combineReducers} from ‘redux‘;
import allReducers from ‘./reducers/index‘;
export default createStore(allReducers);// 创建数据存储仓库
5.项目工程入口集成
import React from ‘react‘; import ReactDOM from ‘react-dom‘; import ‘./index.css‘; import App from ‘./App‘; import reportWebVitals from ‘./reportWebVitals‘; import serviceUrl from ‘./service/url‘; import { createStore } from ‘redux‘; import { Provider, connect } from ‘react-redux‘; import store from ‘./redux/store‘; ReactDOM.render( <React.StrictMode> <Provider store={store}> <App /> </Provider> </React.StrictMode>, document.getElementById(‘root‘) ); reportWebVitals();
import React,{component} from ‘react‘;
import ‘./index.scss‘;
import { Form, Input, Button, Checkbox,message } from ‘antd‘;
import { Row, Col } from ‘antd‘;
import Config from ‘../../utils/config‘;
import { HttpRequest,HttpStatus } from ‘../../service/http‘;
import Url from ‘../../service/url‘;
import md5 from ‘js-md5‘;
import { Link } from "react-router-dom";
import {connect} from ‘react-redux‘
import { userTokenAction,userAction } from ‘../../redux/actions/action‘;
class Login extends React.PureComponent {
constructor(props){
super(props);
}
// 调用redux方法
onFinish = (values) => {
this.props.userToken(11111 || null);
this.props.userAction(22222 || null);
};
render() {
return <div>
展示redux store数值{ this.props?.token || ‘暂无数据‘}
<button onClick={() => {this.onFinish}}>触发redux方法</button>
</div>
}
}
// redux store数值暴露
const mapStateToProps=(state)=>{
return {
token:state.token,
}
};
// redux方法暴露
const mapDispatchToProps = (dispatch) => {
return {
userToken:(token)=>{
dispatch(userTokenAction(token))
},
userAction:(data)=>{
dispatch(userAction(data))
}
};
};
export default connect(mapStateToProps, mapDispatchToProps)(Login);
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原文：https://www.cnblogs.com/tianmiaogongzuoshi/p/15113858.html