reactjs - React Router - 如何约束路由匹配中的参数？

Question

我真的不知道如何使用正则表达式等来约束参数。
如何区分这两条路线？

  <Router>
    <Route path="/:alpha_index" component={Child1} />
    <Route path="/:numeric_index" component={Child2} />
  </Router>

并阻止“/123”触发第一条路由？

Answer 1

React-router v4 现在允许您使用正则表达式来匹配参数 -- https://reacttraining.com/react-router/web/api/Route/path-string

const NumberRoute = () => <div>Number Route</div>;
const StringRoute = () => <div>String Route</div>;

<Router>
    <Switch>
        <Route exact path="/foo/:id(\\d+)" component={NumberRoute}/>
        <Route exact path="/foo/:path(\\w+)" component={StringRoute}/>
    </Switch>
</Router>

更多信息: https://github.com/pillarjs/path-to-regexp/tree/v1.7.0#custom-match-parameters