React-router路由问题

Question

classR1extendsReact.Component{
render(){
return
1
}
}
classR2extendsReact.Component{
render(){
return
2
}
}
classRtsextendsReact.Component{
render(){
return
}
}
constrender=()=>{
ReactDOM.render(
,
document.querySelector('#app')
)
}
render();
http://localhost:8080/R的结果是CannotGET/R我很气啊

Answer 1