Multi-layer nested routing sub-routing of react-router 4 is not implemented.

at first, I want to implement a route nesting. There is no problem with (App) on the main route, so it can be realized.
then I want to do a route nesting on the child route, but < Route / > does not show it. 


const App = () => (
     <Switch>
      <Route exact path="/" component={Index}/>
      <Route strict exact path="/user" component={User} />
      <Route strict exact path="/user/details" component={Details} />
     </Switch>
               
)
export default App   

class Details extends Component{   

    componentWillMount(){
        console.log("details")
      }

    render(){

        return (
            <div>
                <ul>
                    <li><Link to="/user/details/msg">click msg</Link></li>
                    <li><Link to="/user/details/abt">cliock abt</Link></li>
                </ul>
                <Route path="/user/details/msg" component={Msg} />
                <Route path="/user/details/abt" component={Abt} />
            </div>
        )
    }
}

export default Details;

when you click

  • , it is always transferred to a new route. I don"t know why < Route / > is not rendered;

    I hope your seniors will give us some advice and thank you;

    • React-router4 react.js
    Apr.28,2021

    . Using nested routing exact, cannot be used at the parent because when you match the route, the path adds a child route, resulting in a mismatch of the parent routing path so that the parent and child components cannot be displayed. For example, your / user/details uses exact, when the path changes to / user/details/msg does not match / user/details, so you cannot render Details and msg is in Detail, so you will not render

    < Route strict exact path= "/ user/details" component= {Details} / >
    try to remove exact from it.
    I encountered a similar problem, and that's how it was solved.

    switch is a single recommendation to put Route together somewhere else and use Link or this.props.history.push () to jump Route plus exact to indicate an exact match

    when you jump to / user/details/msg,
    < Route strict exact path= "/ user/details" component= {Details} / >
    does not match Details. The sub-components in Details naturally cannot be rendered.
    < Route strict exact path= "/ user" component= {User} / >
    < Route strict exact path= "/ user/details" component= {Details} / >
    Why is the routing set to be nested? it's a little strange to try
    like this. 

    const Index=()=>(<div>index</div>);
    const User=()=>(<div>user</div>);
    const Msg=()=>(<div>msg</div>);
    const Abt=()=>(<div>abt</div>);
    const Details=()=>(
            <div>
                <ul>
                    <li><Link to="/details/msg">click msg</Link></li>
                    <li><Link to="/details/abt">cliock abt</Link></li>
                </ul>
                <Route path="/details/msg" component={Msg} />
                <Route path="/details/abt" component={Abt} />
            </div>
    )
    const App = () => (
        <HashRouter>
            <Switch>
                <Route exact path="/" component={Index}/>
                <Route strict exact path="/user" component={User} />
                <Route path="/details" component={Details} />
            </Switch>
        </HashRouter>
    )

    you can use react-router-pro, just like using vue, use router, https://github.com/aiyuekuang.

    .

    Previous: The problem of asynchronously requesting data overwriting?

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