react中使用redux之RTK

npm i react-redux @reduxjs/toolkit

//使用RTK来构造store
import {configureStore} from "@reduxjs/toolkit";
import {stuReducer} from "./stuSlice.js";
import {schoolReducer} from "./schoolSlice.js";
//创建store 用来创建store对象，需要传入一个配置对象作为参数
const store = configureStore({
    reducer:{
        student:stuReducer,
        school:schoolReducer
    }
});
export default store;

import {createSlice} from "@reduxjs/toolkit";
//createSlice 创建reducer的切片
//它需要一个配置对象作为参数，通过对象的不同属性来指定它的配置
const stuSlice = createSlice({
    name:'stu',  //用来自动生成action中的type
    initialState:{  //state的初始值
        name:'孙悟空',
        age:18,
        gender:'男',
        address:'花果山'
    },
    reducers:{  //指定state的各种操作，直接在对象中添加方法
        //修改姓名的方法
        setName(state,action){
           /**
             * 可以通过不同的方法来指定对state的不同操作
             * 两个参数：state这个state是一个代理对象，可以直接修改
             * action.payload是传递过来的参数
             * */
            state.name = action.payload;
        },
        //修改年龄的方法
        setAge(state,action){
            state.age = action.payload;
        }
    }
})
/**
 * 切片对象会自动的帮助我们生成action
 * action中存储的是slice自动生成action创建器（函数），调用函数后会自动创建action对象
 * action对象的结构{type:name/函数名,payload:函数的参数}
 * */
export const {setName,setAge} = stuSlice.actions;
export const {reducer:stuReducer} = stuSlice;

//创建学校的slice
import {createSlice} from "@reduxjs/toolkit";
const schoolSlice = createSlice({
    name:'school',
    initialState:{
        name:'花果山一校',
        address:'花果山大街22号'
    },
    reducers:{
        //修改name的方法
        setName(state,action){
            state.name = action.payload;
        },
        //修改地址的方法
        setAddress(state, action) {
            state.address = action.payload;
        }
    }
})
export const {setName,setAddress} = schoolSlice.actions;
export const {reducer:schoolReducer} = schoolSlice;

import React from 'react'
import ReactDOM from 'react-dom/client'
import App from './App'
import {Provider} from "react-redux";
import store from "./store/index.js";
ReactDOM.createRoot(document.getElementById('root')).render(
    <Provider store={store}>
        <App />
    </Provider>
)

import {useDispatch, useSelector} from "react-redux";
import {setName,setAge} from "./store/stuSlice";
import {setName as setSchoolName, setAddress as setSchoolAddress} from "./store/schoolSlice";
function App() {
  //useSelector()用来加载state中的数据
    const {student, school} = useSelector(state => state);
    //通过useDispatch()来获取派发器对象
    const dispatch = useDispatch();
    //修改学生的姓名
    const setNameHandler = () =>{
        dispatch(setName('东小川'));
    }
    //修改学生的年龄
    const setAgeHandler = () =>{
        dispatch(setAge(21));
    }
    return (
        <div className="App">
            <p>
                {student.name}------
                {student.age}------
                {student.gender}------
                {student.address}------
            </p>
            <button onClick={setNameHandler}>修改name</button>
            <button onClick={setAgeHandler}>修改age</button>
            <hr/>
            <p>
                {school.name}-------
                {school.address}-------
            </p>
            <button onClick={()=>dispatch(setSchoolName('高老庄中小学'))}>修改学校名称</button>
            <button onClick={()=>dispatch(setSchoolAddress('高老庄府前街19号'))}>修改学校地址</button>
        </div>
    )
}
export default App