实现redux-persist

Question

我正在尝试弄清楚如何在我的应用程序中配置redux持久化。在我的react index.js文件中，我得到一个“‘持久化’没有定义”。我只需要持久化一个user_id，这样当页面刷新时，在组件did挂载上获取的数据就不会丢失。

这是我的store.js文件

import { createStore, combineReducers, applyMiddleware } from 'redux';
import userReducer from './reducers/userReducer';
import promiseMiddleware from 'redux-promise-middleware';
import { persistStore, persistReducer } from 'redux-persist';
import storage from 'redux-persist/lib/storage';

const rootReducer = combineReducers({
    userReducer
});

const persistConfig = {
    key: 'root',
    storage,
  }
   
  const persistedReducer = persistReducer(persistConfig, rootReducer)
   
  export default () => {
    let store = createStore(persistedReducer, applyMiddleware(promiseMiddleware))
    let persistor = persistStore(store)
    return { store, persistor }
  }

//export default createStore(rootReducer,  applyMiddleware(promiseMiddleware));

这是我的react应用程序中的index.js文件。

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';
import { HashRouter as Router } from 'react-router-dom';
import { Provider } from 'react-redux';
import store from './redux/store';
import { PersistGate } from 'redux-persist/integration/react'



ReactDOM.render(
  <React.StrictMode>
    <Provider store={store}>
    <PersistGate loading={null} persistor={persistor}>
      <Router>
        <App />
      </Router>
      </PersistGate>
    </Provider>
  </React.StrictMode>,
  document.getElementById('root')
);

reportWebVitals();

Answer 1

您要导入的store是一个应该触发的函数，以获得实际的store和persistor。

重构您的存储导入，如下所示

import useStore from './redux/store';


const { store, persistor } = useStore();

或者：

重构您的store.js文件

let store = createStore(persistedReducer, applyMiddleware(promiseMiddleware));
let persistor = persistStore(store);
export { store, persistor }

并从index.js文件导入它，如下所示

import { store, persistor } from './redux/store';