现在想把articesList设置为默认路由，点击AppSider里的文章标签去articlesList路由，点击ArticlesList里的文章进入articleDetail路由
App.js

<Layout className="app-container">
  <AppSider />
  <AppContent />
</Layout>

AppContent

class AppContent extends React.Component {
  render() {
    return (
      <Content className="app-content bg-fff">
        <Switch>
          <Route path="/articleDetail" component={ArticleDetail} />
          <Route path='/articlesList/:tag' component={ArticlesList} />
        </Switch>
      </Content>
    )
  }
}