Java 未从servlet传递到数据库的值，

我试图发送从html页面获取的值，我用传递到其对象中的值调用DAO类…但抛出了以下错误 严重：路径为[/testservlet1]的上下文中Servlet[abc]的Servlet.service（）引发了带有根本原因的异常[Servlet executio

enter code here

n引发了异常] java.lang.ClassNotFoundException:org.hibernate.service.ServiceRegistry

// 公共类trail4扩展了HttpServlet{

public void doGet(HttpServletRequest req,HttpServletResponse  resp) throws IOException
{   
   resp.setContentType("Text/html");
    int age= Integer.parseInt(req.getParameter("age"));//got age  from html page
    //BigInteger num=(req.getParameter("num"); //got fone number from html page
    //String num=req.getParameter("num");
    long num=Integer.parseInt(req.getParameter("num")); //got number from html page
    String name=req.getParameter("name");//got name
   PrintWriter out =resp.getWriter();
    
    out.println("your no="+num);
    out.println("<br>");
    out.println("your age "+age);
    out.println("<br>");
    out.println("your name "+name);
    out.println("<br>");
    
  trail2 obj1=new trail2(age,name);//make object of trail2 class which has the code of  hibernate
  //passed age and name,dint pass the number in this run      
        boolean b=obj1.detailsaved(obj1);//called detail saved method of trail 2 class
  //and passed obj1
        if(b==true)
         {
           out.println("Employee details sucessfully saved <br>");
            
         }
          
         else
         {
             out.println("Employee details not Saved.<br>"); 
         }
         out.println(" <br>");
         out.close();
                   
}

{

}错误是：

ClassNotFoundException: org.hibernate.service.ServiceRegistry

这很可能意味着Hibernate不在web服务器的类路径上

---

通常，您需要将其包含在

.war

或

.ear

部署的库中，或将其添加为web服务器的基本模块。

ClassNotFoundException

在类路径不完整时发生。首先，确保您的代码在编译时没有错误（例如：上次打印缺少结束引号），然后包括有关设置的更多详细信息（是否使用Maven？如何引用Hibernate类？）

    boolean flag=true;
      StandardServiceRegistry ssr = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();  
      Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();  
      SessionFactory factory=meta.getSessionFactoryBuilder().build();
      Session session=factory.openSession();           
      org.hibernate.Transaction t=session.beginTransaction();  
      session.save(obj1);
      t.commit();
System.out.println(" details saved check database...);
return flag;      
}

ClassNotFoundException: org.hibernate.service.ServiceRegistry