當我提交註冊表單註冊servlet運行但是當我創建了休眠會話工廠的對象它給了我一個異常。「javax.servlet.ServletException:Servlet執行拋出一個例外 org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)「。請幫我看看這個例外。java.lang.NoClassDefFoundError如何解決這個錯誤
package login;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.SessionFactory;
@WebServlet("/Registration")
public class Registration extends HttpServlet {
private static final long serialVersionUID = 1L;
public Registration() {
super();
// TODO Auto-generated constructor stub
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String username = request.getParameter("username");
String password = request.getParameter("password");
String name = request.getParameter("name");
User u = new User();
u.setUsername(username);
u.setPassword(password);
u.setName(name);
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
}
張貼在全 –
堆棧跟蹤,請提供完整的堆棧跟蹤作爲在類路徑中以及JAR文件名以及tomcat的版本。 –