用过redux-thunk的应该知道，操作相对繁琐一点，dispatch本只可以出发plain object。redux-thunk让dispatch可以返回一个函数。而redux-promise在此基础上大大简化了操作。

实现效果

关键逻辑代码

• store/index.js

import { createStore, applyMiddleware } from "redux";
import { combineReducers } from "redux-immutable";
import { thunk } from "redux-thunk";
import { createLogger } from "redux-logger";
import reduxPromise from "redux-promise";
import reducer from "./reducer";const middleware = [thunk, reduxPromise];
const env = process.env.NODE_ENV;
if (env === "development") {middleware.push(createLogger({ collapsed: true }));
}const store = createStore(reducer, applyMiddleware(...middleware));export default store;

• reucer.js

import { fromJS } from "immutable";
import { delay } from "../../utils";
const initstate = fromJS({list: [],count: 100,
});function storeReducers(state = initstate, action) {console.log("🚀 ~ storeReducers ~ action:", action);switch (action.type) {case "ADD":return state.updateIn(["count"], (n) => n + action.value);case "MINUS":return state.updateIn(["count"], (n) => n - action.value);default:return state;}
}export async function handleAdd() {await delay(2000);const data = await Promise.resolve(20);return { type: "ADD", value: data };
}export async function handleMinus() {await delay(2000);const data = await Promise.resolve(20);return { type: "MINUS", value: data };
}export default storeReducers;

可以发现在handleAdd里面写异步业务获取返回数据是可以正常执行的，功能完好。

当我们注释掉redux-promise中间件的配置好后，页面会立马报错。

import { createStore, applyMiddleware } from "redux";
import { combineReducers } from "redux-immutable";
import { thunk } from "redux-thunk";
import { createLogger } from "redux-logger";
// import reduxPromise from "redux-promise";
import reducer from "./reducer";// const middleware = [thunk, reduxPromise];
const middleware = [thunk];
const env = process.env.NODE_ENV;
if (env === "development") {middleware.push(createLogger({ collapsed: true }));
}const store = createStore(reducer, applyMiddleware(...middleware));
export default store;

• 组件代码

import { Button, Dialog, setDefaultConfig, Space, Toast } from "antd-mobile";
import { http } from "../api/request";
import { useEffect } from "react";
import { useSelector, useDispatch } from "react-redux";
import { handleAdd, handleMinus } from "../store/reducer/store";
function Home() {const count = useSelector((state) => state.getIn(["store", "count"]));const dispatch = useDispatch();function handleAddCount() {dispatch(handleAdd());}function handleMinusCount() {dispatch(handleMinus());}return (<div className="home-box"><h2>home</h2><p>{count}</p><Space><Button color="primary" onClick={handleAddCount}>add</Button><Button color="danger" onClick={handleMinusCount}>minus</Button></Space></div>);
}
export default Home;

参考资料

• https://github.com/redux-utilities/redux-promise