action向jsp页面传递request设置的属性值出现问题``很奇怪啊

package user;
import java.sql.ResultSet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.Action;
import sqlbean.Sql;
public class UserAction extends Action{
public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)
throws Exception
{
Sql sqls=new Sql();
ResultSet rs=null;
UserForm userForm=(UserForm)form;
String name="liaohong";
String oldpassword=userForm.getOldpassword();
String newpassword=userForm.getNewpassword();
String sql="select * from login where password='"+oldpassword+"'";
try{
rs=sqls.search(sql);