为什么总是HTTP状态 500 - 内部服务器错误？

Question

在生成的java文件中的第：[14]行发生错误：[E:\apache-tomcat-8.5.65\work\Catalina\localhost\jora\org\apache\jsp\index_jsp.java]
Only a type can be imported. main.webapp.service.impl.UserServiceImpl resolves to a package

JSP文件：[/index.jsp] 的第 [18] 行发生了一个错误
UserService cannot be resolved to a type
15: 		request.setCharacterEncoding("UTF-8");
16: 		String uName = request.getParameter("name");//获取name值
17: 		String uPwd = request.getParameter("pwd");//获取pwd值
18: 		UserService userService = new UserServiceImpl();
19: 		User user=userService.findUser(new User(uName,uPwd));//调用findUser方法，用户登录
20: 		if(user!=null){//登录成功
21: 			session.setAttribute("info", user);

贴出错误信息↑

 

Answer 1

HTTP状态 500的错误就是你的后台servlet有错误。把jsp页面的代码发出来看看。