如何在 Redux 中添加多个中间件？

Question

我已经插入了一个中间件，redux-thunk，我想添加另一个，redux-logger.

如何配置它以便我的应用程序同时使用这两个中间件？我尝试传入一个 [ReduxThunk, logger] 数组，但没有成功。

代码：

import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
import { createStore, applyMiddleware } from 'redux';
import ReduxThunk from 'redux-thunk';
import logger from 'redux-logger';

import App from './components/app';
import reducers from './reducers';
require('./style.scss');

const createStoreWithMiddleware = applyMiddleware(ReduxThunk)(createStore);

ReactDOM.render(
  <Provider store={createStoreWithMiddleware(reducers)}>
    <App />
  </Provider>,
  document.querySelector('#app')
);

Answer 1

applyMiddleware 将每个中间件作为一个新参数（不是数组）。因此，只需传入您想要的每个中间件即可。

const createStoreWithMiddleware = applyMiddleware(ReduxThunk, logger)(createStore);

Answer 2

applyMiddleware 应该作为第二个参数传递给 createStore。 applyMiddleware 可以有多个中间件作为参数。

const store = createStore(reducers, applyMiddleware(ReduxThunk, logger));

ReactDOM.render(
  <Provider store={store}>
    <App />
  </Provider>,
  document.querySelector('#app')
);

Answer 3

安迪的回答很好，但是，考虑到你的中间件在增长，下面的代码会更好：

const middlewares = [ReduxThunk, logger]
applyMiddleware(...middlewares)

Answer 4

这是应用一个或多个中间件的方法：

import {createStore, applyMiddleware} from 'redux';
import thunk from 'redux-thunk';
import logger from 'redux-logger';
import {rootReducer} from "../reducers"; // Import your combined reducers ;)

const middleWares = [thunk, logger]; // Put the list of third part plugins in an array 

// Create the store with the applied middleWares and export it
export const store = createStore(rootReducer, applyMiddleware(...middleWares));

现在在您的index.js中导入最近导出的商店并将其传递给提供程序组件。您的 index.js 文件应如下所示：

... ...

import {Provider} from 'react-redux';
import {store} from './store';

ReactDOM.render(
    <Provider store={store}>
        <App />
    </Provider>, 
document.getElementById('root'));

就这些！

Answer 5

回答可能有点晚，但我的问题是将 devtools 与中间件一起添加，希望这对某人有所帮助

 // imports.. 
 import { composeWithDevTools } from "redux-devtools-extension";

  const store = createStore(
     Reducer,
     persistedState,
    composeWithDevTools(applyMiddleware(ReduxThunk, promiseMiddleware))
 );

Answer 6

您可以像下面的代码一样以逗号分隔的方式简单地传递中间件：

const store = createStore(reducer, applyMiddleware(thunk, logger));

注意：请在顶部导入 applyMiddlware、thunk 和 logger。

如何在 Redux 中添加多个中间件？

How to add multiple middleware to Redux?

middleware

reactjs

redux

redux-thunk

react-redux