一旦组件被销毁，react-router url不工作，如何清除内存路由

import React, { Component } from 'react';
import { Redirect } from 'react-router-dom';

class MyComponent extends Component {
  componentWillUnmount() {
    // 清除内存路由
    this.setState({ redirect: true });
  }

  render() {
    if (this.state.redirect) {
      return <Redirect to="/" />;
    }

    // 组件的渲染内容
    return (
      // ...
    );
  }
}

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

class MyComponent extends Component {
  componentWillUnmount() {
    // 清除内存路由
    this.setState({ unmount: true });
  }

  render() {
    if (this.state.unmount) {
      return (
        <Switch>
          {/* 添加一个无效的路由 */}
          <Route path="/invalid" />
        </Switch>
      );
    }

    // 组件的渲染内容
    return (
      // ...
    );
  }
}