npm i --save redux-persist

import {applyMiddleware, createStore, compose} from 'redux';
import {createLogger} from 'redux-logger';
import thunk from 'redux-thunk';
import reducers from '../reducers';
import {persistStore, persistReducer} from 'redux-persist';
import storage from 'redux-persist/lib/storage'

const persistConfig = {
 key: 'milk', # 對于數(shù)據(jù) key 的定義
 storage,  # 選擇的存儲引擎
}

# 對 reducers 的封裝處理
const persistedReducer = persistReducer(persistConfig, reducers)


let loggerMiddleware = createLogger();

export default function configureStore() {
 const enhancers = compose(
  applyMiddleware(thunk, loggerMiddleware),
 );

 # 處理后的 reducers 需要作為參數(shù)傳遞在 createStore 中
 const store = createStore(persistedReducer, enhancers)

 # 持久化 store
 let persistor = persistStore(store)
 
 return {store, persistor}
}

import React, {Component} from 'react';
import {Provider} from 'react-redux';
import HomeContainer from './container/HomeContainer'
import configureStore from './redux/store'
import {PersistGate} from 'redux-persist/integration/react' # 看這里


const {store, persistor} = configureStore();

class App extends Component {
 render() {
  return (
   <Provider store={store}>
    
    <PersistGate loading={null} persistor={persistor}>
     <HomeContainer/>
    </PersistGate>

   </Provider>
  );
 }
}

export default App