我正在将组件连接到redux存储，但仅传递了react-router道具。甚至在<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC
"-//Mort Bay Consulting//DTD Configure//EN"
"http://www.eclipse.org/jetty/configure_9_3.dtd">
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
<Set name="extractWAR">false</Set>
</Configure>
函数中设置testVar也不起作用。
代码简化：
mapStateToProps在渲染方法中将//index.js
import { createStore, applyMiddleware } from 'redux'
import thunk from 'redux-thunk'
import {initialState} from './reducers/RootReducer';
const store = createStore(RootReducer,initialState, applyMiddleware(thunk));
ReactDOM.render((
<Provider store={store}>
<BrowserRouter>
<App />
</BrowserRouter>
</Provider>
), document.getElementById('root'));
// App.js
import Home from './path/to/Home-component'
import About from './path/to/About-component'
...
<div>
<Switch>
<Route exact path='/' component={Home}/>
<Route path='/uploadsideletters' component={About}/>
...
</Switch>
</div>
...
// About.js
...
export default connect(mapStateToProps,mapDispatchToProps)(About);
const mapStateToProps = (state) => ({
...state,
testVar: "test"
});
const mapDispatchToProps = (dispatch) => ({
// empty for now
});
打印到控制台时，我得到：
this.props
我的testVar不在那里。为什么会这样？
答案 0 :(得分：0)
看似简单，问题是我在REPLACE INTO table2 (value1,value2,date,time)
SELECT t1.value1, t1.value2, t1.date, t1.time
FROM table1 t1 LEFT JOIN table1 t2
ON (t1.value1 = t2.value1 AND concat(t1.date,' ',t1.time) < concat(t2.date,' ',t2.time)) WHERE t2.date IS NULL;
和connect(...)之前叫mapStateToProps()。
更改连接部分，现在看起来像：
mapDispatchToProps()