Question

用myeclipse2014用到hibernate做登陆页面，判断用户名和密码正确则可以登入

HTTP Status 500 - java.lang.NullPointerException
type Exception report
message java.lang.NullPointerException
description The server encountered an internal error that prevented it from fulfilling this request.
exception javax.servlet.ServletException: java.lang.NullPointerException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause java.lang.NullPointerException
struts.action.LoginAction.execute(LoginAction.java:62)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.42 logs.

Answer 1

在你LoginAction里的第62行,代码有问题,可以打个断点调一下 。

追问

能不能给我个在myeclipse里面的jsp结合hibernate用到的例子，简单一点的就好，我就是把从数据库里面的数据读取到页面上的代码不会写，会用hibernate把数据加入到数据库，谢谢了

追答

我手上没有ssh的项目了,你直接把你的发我邮箱 我给你改好,把建表语句也发过来,whj_503@163.com

Answer 2

空指针异常，估计是参数没传到action

Answer 3

代码有bug～～～～～～～～～～～～

追问

能不能给我个在myeclipse里面的jsp结合hibernate用到的例子，简单一点的就好，我就是把从数据库里面的数据读取到页面上的代码不会写，会用hibernate把数据加入到数据库，谢谢了