Question

我创建了这样的中间件：

export default store => next => action => {
    const res = next(action)

    console.log("Middleware", action.type)

    return res
}

我的商店配置为：

import { createBrowserHistory } from 'history';
import { applyMiddleware, compose, createStore } from 'redux';
import { routerMiddleware } from 'connected-react-router';
import middleware from './middleware'

import rootReducer from './reducers';

export const history = createBrowserHistory();

const defaultState = {};

const composeEnhancers =
  typeof window === 'object' &&
  window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ?   
    window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({
    }) : compose;

const enhancer = composeEnhancers(
  applyMiddleware(middleware, routerMiddleware(history)),
);

export const store = createStore(
  rootReducer(history),
  defaultState,
  enhancer
);

我也有一个reducer，并且在日志和调试器中看到，首先调用reducer，然后再调用中间件。关于我配置错误的任何建议吗？

Answer 1

如果我没记错的话，调用next(action)时正在调用reducer。将console.log移到上方，这应该会给您想要的日志顺序。

Redux中间件在reducer之后被调用

1 个答案: