在“连接（应用）”的上下文或道具中找不到“商店”

Question

在将多个文件的内容合并为一个作为 Redux 的配​​置后，我遇到了配置错误的 Redux 问题。

如何解决store，同时将其保存在一个文件中？

未处理的 JS 异常：在任一上下文中都找不到“商店” 或“连接（应用）”的道具。要么将根组件包装在 ，或将“store”作为道具显式传递给“Connect(App)”。

'use strict';
import React, { Component } from 'react';
import { createStore, applyMiddleware, combineReducers, bindActionCreators } from 'redux';
import { Provider, connect } from 'react-redux';
import thunk from 'redux-thunk';
import * as screenActions from './redux/actions/screenActions';

import * as reducers from './redux/stores/reducers';

const createStoreWithMiddleware = applyMiddleware(thunk)(createStore);
const reducer = combineReducers(reducers);
const store = createStoreWithMiddleware(reducer);

import RootContainer from './redux/views/containers/rootContainer';

class App extends Component {
  render() {
    const { state, actions } = this.props;
    return (
      <Provider store={store}>
        <RootContainer />
      </Provider>
    );
  }
}

export default connect(
  (state) => ({
    state: state.reducer
  }),
  (dispatch) => ({
    actions: bindActionCreators(screenActions, dispatch)
  })
)(App);

Answer 1

• Provider，passes the store 到嵌套在其中的组件，通常只需要应用于 root 组件（在您的情况下为 <RootContainer>

• connect 与提供商店的组件连接，而不是向其提供商店的组件。

建议的解决方案：

MOVE 将 connect 改为 <RootContainer> 组件文件，并将 connect 传递给 RootContainer 而 不 App 组件：

export default connect(
  (state) => ({
    state: state.reducer
  }),
  (dispatch) => ({
    actions: bindActionCreators(screenActions, dispatch)
  })
)(RootContainer);  // <<--- here :)

---

更新：

鉴于 OP 希望在同一个文件中实现所有这些，您必须创建一个 React 元素来代表您从 connect 创建的 Redux 容器，因此：

'use strict';
import React, { Component } from 'react';
import { createStore, applyMiddleware, combineReducers, bindActionCreators } from 'redux';
import { Provider, connect } from 'react-redux';
import thunk from 'redux-thunk';
import * as screenActions from './redux/actions/screenActions';

import * as reducers from './redux/stores/reducers';

const createStoreWithMiddleware = applyMiddleware(thunk)(createStore);
const reducer = combineReducers(reducers);
const store = createStoreWithMiddleware(reducer);

import RootContainer from './redux/views/containers/rootContainer';

// name has to be capitalised for React to recognise it as an element in JSX
const ConnectedRoot = connect(
  (state) => ({
    state: state.reducer
  }),
  (dispatch) => ({
    actions: bindActionCreators(screenActions, dispatch)
  })
)(RootContainer);

class App extends Component {
  render() {
    const { state, actions } = this.props;
    return (
      <Provider store={store}>
        <ConnectedRoot />    <------USE IT HERE
      </Provider>
    );
  }
}

Answer 2

我在使用的时候遇到了这样的问题：

import connect from "react-redux/lib/connect/connect";

代替那个，使用：

import {connect} from "react-redux";

Answer 3

在您的根索引中放置提供程序。

<Provider store={store}>
    <App />
</Provider>,