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        急!!!hibernate应用开发完全手册18章程序
                 	
                        发表在JavaWeb图书答疑
                        2009-08-09                                                
                    		
                                                                            	
                        
                        
                    
                    
                    	是否精华
                    	是
                    	否
                    
                    
                    
                            版块置顶:
                            是
                            否
                        
                    
                                           按照视频中的讲解将环境搭建好了,可以正常显示主界面但是点击登录之后提示
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:516)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:423)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
java.lang.NullPointerException
com.core.MySession.openSession(MySession.java:24)
com.dao.UserDAO.query(UserDAO.java:15)
com.dao.UserDAO.login(UserDAO.java:70)
com.action.User.login(User.java:130)
com.action.User.execute(User.java:34)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
这是什么问题?我用的JDK是1.6的
                
        	
        
        
    type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:516)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:423)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
java.lang.NullPointerException
com.core.MySession.openSession(MySession.java:24)
com.dao.UserDAO.query(UserDAO.java:15)
com.dao.UserDAO.login(UserDAO.java:70)
com.action.User.login(User.java:130)
com.action.User.execute(User.java:34)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
这是什么问题?我用的JDK是1.6的

 
	
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