网站仅在重新加载后更改-反应路由器

我想制作一个导航栏,其中包含指向不同路线的不同链接。在另一个文件中,我有react-router的东西以便更改网站。但是,当我按链接时,它是有效的,但前提是我事后重新加载。

头文件:

export default function Head(props){
    return(
        <Router>            
            <div className="Head">                      
                <div className="HeadItemFirst">bwftp</div>         
                <div className="HeadPaths">                    
                    <Link className="HeadItem" to="/"><div>Start</div></Link>
                    <Link className="HeadItem" to="/about"><div>about</div></Link>
                    <Link className="HeadItem" to="/settings"><div>Settings</div></Link>                        
                </div>                                 
            </div>             
        </Router> 
    )
}

和App文件:

export default function App(){
   return(
  <div className="App">
  <Head />{/* Here are all the links in a navbar stored */}      
  <Body /> 
  <Foot />

  <Router>         
    <Switch>
      <Route path="/" exact component={Home}/>
      <Route path="/about" exact component={About}/>
      <Route path="/settings" exact component={Settings}/>
      <Route render={()=>(<h1>404</h1>)}/>
    </Switch>
  </Router>
</div>
  )
}