404 page in REACT

问题

I created the component NotFound and it works fine when I go to a page that doesn't exist. But the same page it's appearing in all my pages, not only the one that doesn't exist. This is the component:

import React from 'react'

const NotFound = () =>
  <div>
    <h3>404 page not found</h3>
    <p>We are sorry but the page you are looking for does not exist.</p>
  </div>

export default NotFound

And this is how I used it in the main page:

class MainSite extends Component {
  render () {
    return (
      <div>
        {/* Render nav */}
        <Route path='/dashboard' component={Nav} />
        <Route path='/retrospectives' component={Nav} />
        <Route path='/users' component={Nav} />
        <Route path='/projects' component={Nav} />

        {/* Dashboard page */}
        <ProtectedRoute exact path='/dashboard' component={DashboardPage} />

        {/* Retrospectives page */}
        <ProtectedRoute exact path='/retrospectives' component={RetrospectivesPage} />

        {/* Users page */}
        <ProtectedRoute exact path='/users' component={UsersPage} />

        {/* Projects page */}
        <ProtectedRoute exact path='/projects' component={ProjectsPage} />

        {/* Retrospective related pages */}
        <Route exact path='/retrospectives/:retrospectiveId' component={Retrospective} />
        <Route exact path='/join-retrospective' component={JoinRetrospective} />
        <ProtectedRoute exact path='/create-retrospective/:retrospectiveId' component={Retrospective} />

        {/* OnBoarding pages */}
        <ProtectedRoute exact path='/beta-code' component={BetaCodeAccess} />
        <Route exact path='/auth-handler' component={AuthHandler} />
        <Route exact path='/join-organization' component={JoinOrganization} />
      </div>
    )
  }
}

export default MainSite

As you can see I use <Route path="*" component={NotFound} /> to create the 404 pages, but that component is appearing in every existing page as well. How can I fix this?

回答1:

Try this one:

  import { Switch, Route } from 'react-router-dom';

  <Switch>
    <Route path='/dashboard' component={Nav} />
    <Route path='/retrospectives' component={Nav} />
    <Route path='/users' component={Nav} />
    <Route path='/projects' component={Nav} />

    <Route path="" component={NotFound} />
  </Switch>

来源：https://stackoverflow.com/questions/49181678/404-page-in-react