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新手使用find()有关问题求助

www.myexceptions.net  网友分享于：2013-12-05  浏览：433次

新手使用find()问题求助。

我的代码：

import   java.util.List;

import   org.acegisecurity.providers.encoding.Md5PasswordEncoder;

import   org.acegisecurity.providers.encoding.PasswordEncoder;

import   org.apache.commons.logging.Log;

import   org.apache.commons.logging.LogFactory;

import   org.springside.core.dao.HibernateEntityDao;

import   com.my.security.model.User;

public   class   CustomerUser   extends   HibernateEntityDao {

final   Log   buzzLog   =   LogFactory.getLog(Constants.BUSINESS_LOG);

public   int   UserCheck(String   userid,   String   passwd){

buzzLog.info( "---   Check   Begin   --- ");

int   ret   =   1;

String   hql;

String   passwd2;

PasswordEncoder   passwordEncoder   =   new   Md5PasswordEncoder();

passwd2   =   passwordEncoder.encodePassword(passwd,   null);

hql   =   "from   user   u   where   number=?   and   passwd=? ";

try   {

buzzLog.info( "---find   begin   ---\n "   +   hql);

List   userList   =   find(hql,userid,passwd2);

if   (   userList.size()   >   0)   {

ret   =   0;

}

}

catch(Exception   e){

buzzLog.info( "---find   error   --- ");

e.printStackTrace();

ret   =   -1;

}

return   ret;

}

public   List   find(String   hql,   Object...   values)   {

Assert.hasText(hql);

return   getHibernateTemplate().find(hql,   values);

}

}

执行时报错：

2007-07-09   13:05:26,375   INFO   [business]   -  

2007-07-09   13:05:26,421   INFO   [business]   -  

from   ss_users   u   where   number=?   and   passwd=?>

2007-07-09   13:05:26,421   INFO   [business]   -  

java.lang.NullPointerException

at   org.springside.core.dao.HibernateGenericDao.find(HibernateGenericDao.java:159)

at   com.my.commons.CustomerUser.UserCheck(CustomerUser.java:34)  

at   sun.reflect.NativeMethodAccessorImpl.invoke0(Native   Method)

at   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at   java.lang.reflect.Method.invoke(Method.java:585)

at   org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)

at   org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)

at   org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

at   org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)

at   org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

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