u01d41action.java

持久层hibernate技术使用的一个例子

package cn.hope.front.action;



import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import cn.hope.front.bo.U01Dbo;
import cn.hope.front.form.U01D4form;
import cn.hope.front.pojo.Student;



public class U01D41action extends Action{
	
	Logger log = Logger.getLogger(U01D41action.class.getName());
	
	public ActionForward execute(
			ActionMapping mapping,
			ActionForm form,
			HttpServletRequest request,  
			HttpServletResponse response) throws Exception {
		
			U01D4form dyform = (U01D4form) form;         
			String name = (String)dyform.getName();
			U01Dbo u01dbo=new U01Dbo();
			List list=null;
			Student student=null;
			list=u01dbo.U01D4bo(name);	
			System.out.println(name);
			//如果为真就返正确的页面
			HttpSession session=request.getSession();
			if(list!=null){
			if(list.size()>0){	//放到实体中去		
				student =(Student) list.get(0);
				session.setAttribute("D4",student);//把实体压倒SESSION里去。
			}
			}
			
				if (list==null||list.size()==0) {//为空就是失败。			
					ActionMessages errors = new ActionMessages();
					errors.add(ActionMessages.GLOBAL_MESSAGE,
						new ActionMessage("U01label.deny"));
						
					if (!errors.isEmpty()) {
						saveErrors(request, errors);
					}					
		  			return  mapping.findForward("failed"); //登陆失败
				}
				else{
				
		 	   		return mapping.findForward("D41");//登陆成功					
				}
			
}
	

}