使用React Router
v4开发React应用程序。一切顺利，直到我在应用程序中引入了Redux。从那时起，单击更改路径的链接时，浏览器url发生更改，但是未加载与该路径相对应的组件。如果我注释掉Redux代码，它会很好地工作。是什么原因造成的？这是我的路由代码：

import React, { Component } from 'react';
import { Switch, Route, Link } from 'react-router-dom';
import LeftSubDefault from './../components/left-sub-default.component';
import LeftSubOne from './../components/left-sub-one.component';
import LeftSubTwo from './../components/left-sub-two.component';
import { withRouter } from 'react-router-dom';
import { connect } from "react-redux";
import { goToLeftDefault, goToLeftOne, goToLeftTwo } from "./../actions/leftRouteActions.js";

class LeftComponent extends Component {
  render() {
    return (
      <div className="col-xs-6">
          <p>
            Current sub route: {this.props.currentRoute}
          </p>
          <ul>
            <li onClick={this.props.goToDefault}><Link to={'/'}>Go To Default</Link></li>
            <li onClick={this.props.goToSub1}><Link to={'/left-sub1'}>Go To One</Link></li>
            <li onClick={this.props.goToSub2}><Link to={'/left-sub2'}>Go To Two</Link></li>
          </ul>
          <Switch>
            <Route exact path='/' component={LeftSubDefault} />
            <Route exact path='/left-sub1' component={LeftSubOne} />
            <Route exact path='/left-sub2' component={LeftSubTwo} />
          </Switch>
      </div>
    );
  }
}
const mapStateToProps = (store) => {
  return {
    currentRoute: store.routes.currentRoute
  };
}
const mapDispatchToProps = (dispatch) => {
  return {
    goToDefault: () => {
      dispatch(goToLeftDefault())
    },
    goToSub1: () => {
      dispatch(goToLeftOne())
    },
    goToSub2: () => {
      dispatch(goToLeftTwo())
    }
  };
}
export default withRouter(connect(mapStateToProps, mapDispatchToProps)(LeftComponent));

PS：控制台没有错误。代码运行干净，只是组件没有加载。这是github上的类似线程：4671。我在各种站点上看到了很多线程，但是没有一个线程可以解决此问题。