升级至Tomcat10+Java11后Servlet类型转换异常问题求助

我近期将Java Web应用升级为使用Tomcat 10和Java 11，在特定页面加载时，前端通过JavaScript发起Ajax请求调用后端Servlet，出现以下错误：

java.lang.ClassCastException: class GenericServlets.All.PageLoadServlet_2023_2024 cannot be cast to class jakarta.servlet.Servlet (GenericServlets.All.PageLoadServlet_2023_2024 is in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @a0a0ebe; jakarta.servlet.Servlet is in unnamed module of loader java.net.URLClassLoader @1f7030a6)

我已按照网上的解决方案，将所有javax.servlet.*的导入语句替换为jakarta.servlet.*，但仍出现相同错误。

相关代码参考 #

前端Ajax调用代码 #

function pageLoad()
{
   $.ajax({
            type: 'POST', 
            data: {pageLoadData : "J"},
            url: '../../../../All/PageLoadServlet_2023_2024',
            success: function (data)
            { 
              ...

Servlet导入及核心代码 #

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

@WebServlet("/All/PageLoadServlet_2023_2024")
public class PageLoadServlet_2023_2024 extends HttpServlet 
{
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException 
    {
        doPost(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException 
    {
        // Get parameter
        String pageLoadData = request.getParameter("pageLoadData");  

        ...

内容的提问来源于stack exchange，提问作者Luke_Skywalker007