使用自定义路由组件，这在React Router v3中是可能的。

var Dashboard = require('./Dashboard');
var Comments = require('./Comments');
var routes = (
  <Route path="/" handler={Index}>
    <MyRoute myprop="value" path="comments" handler={Comments}/>
    <DefaultRoute handler={Dashboard}/>
  </Route>
);

对于<MyRoute>组件代码，它应该类似于:

import React from 'react';
import { Route } from 'react-router';
import { createRoutesFromReactChildren } from 'react-router/lib//RouteUtils';

const MyRoute = () => <div>&lt;MyRoute&gt; elements are for configuration only and should not be rendered</div>;

MyRoute.createRouteFromReactElement = (element, parentRoute) => {
    const { path, myprop } = element.props;
    // dynamically add crud route
    const myRoute = createRoutesFromReactChildren(
        <Route path={path} />,
        parentRoute
    )[0];
    // higher-order component to pass myprop as resource to components
    myRoute.component = ({ children }) => (
        <div>
            {React.Children.map(children, child => React.cloneElement(child, { myprop }))}
        </div>
    );
    return myRoute;
};

export default MyRoute;

有关自定义路由组件方法的更多详细信息，请查看我关于该主题的博客文章:http://marmelab.com/blog/2016/09/20/custom-react-router-component.html

摘自接受的回复中ciantic的评论:

<Route path="comments" component={() => (<Comments myProp="value" />)}/>

在我看来，这是最优雅的解决办法。它的工作原理。帮助了我。

React路由器的问题是它会渲染你的组件，因此会阻止你传入道具。另一方面，导航路由器允许你渲染你自己的组件。这意味着您不必像下面的代码和附带的JsFiddle显示那样跳过任何障碍来传递道具。

var Comments = ({myProp}) => <div>{myProp}</div>;

var stateNavigator = new Navigation.StateNavigator([
  {key:'comments', route:''}
]);

stateNavigator.states.comments.navigated = function(data) {
  ReactDOM.render(
    <Comments myProp="value" />,
    document.getElementById('content')
  );
}

stateNavigator.start();

class App extends Component {
  constructor(props){
    super(props);

    this.state = {
      data:null
    }


  }
 componentDidMount(){
   database.ref().on('value', (snapshot) =>{
     this.setState({
       data : snapshot.val()
      })
   });
 }

  render(){
  //  const { data } = this.state
  return (
    <BrowserRouter>
      <Switch>
        <Route exact path = "/" component = { LandingPage }  />
        <Route 
          path='/signup' 
          render = { () => <Signup  data = {this.state.data} />} />
        </Switch>
    </BrowserRouter>

  );
  }
};

export default App;

React路由器v5.1 (React >= 16.8)这样做的方式:

<Route path="/comments">
    <Comments myprop="value" />
</Route>

现在，如果你想访问组件中的Route Props，你可以参考这个解决方案。对于函数组件，还有另一个钩子useParams()在那篇文章中没有提到。

更多参考:React Router v5.1

这可能是在cookie处理程序中使用react-router-dom的最佳方式

在index.js

import React, { Component } from 'react'
import {Switch,Route,Redirect} from "react-router-dom"
import {RouteWithLayout} from "./cookieCheck"

import Login from "../app/pages/login"
import DummyLayout from "../app/layouts/dummy"
import DummyPage from "../app/pages/dummy" 

export default ({props})=>{
return(
    <Switch>
        <Route path="/login" component={Login} />
        <RouteWithLayout path="/dummy" layout={DummyLayout} component={DummyPage} 
        {...props}/>
        <Redirect from="/*" to="/login" />
    </Switch>
  )
}

并使用cookie检查

import React , {createElement} from 'react'
import {Route,Redirect} from "react-router-dom"
import {COOKIE,getCookie} from "../services/"

export const RouteWithLayout = ({layout,component,...rest})=>{
    if(getCookie(COOKIE)==null)return <Redirect to="/login"/>
        return (
        <Route {...rest} render={(props) =>
            createElement(layout, {...props, ...rest}, createElement(component, 
      {...props, ...rest}))
       }
      />
    )
}