问题描述：Ant Design 的侧边栏菜单项在刷新页面后无法正确高亮当前选中的菜单项。

解决方法：

1. 使用 React Router 进行路由管理，并在菜单项的路由配置中添加 exact 属性。

import { BrowserRouter as Router, Route, Link } from "react-router-dom";
import { Menu } from "antd";

const App = () => {
  return (
    
      
        
          Home
        
        
          About
        
      

      
      
    
  );
};

const Home = () => 
Home
;
const About = () => 
About
;

export default App;

2. 在菜单项的父组件中监听路由变化，并根据当前路由来设置菜单项的选中状态。

import { useState, useEffect } from "react";
import { useLocation } from "react-router-dom";
import { Menu } from "antd";

const App = () => {
  const location = useLocation();
  const [selectedKey, setSelectedKey] = useState("/");

  useEffect(() => {
    setSelectedKey(location.pathname);
  }, [location]);

  return (
    
      
        Home
      
      
        About
      
    
  );
};

通过以上两种方法，可以解决 Ant Design 侧边栏菜单项刷新后无法正确高亮当前选中的菜单项的问题。