利用开源项目Hibernate开发Blog系统

import java.io.*;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionServlet;
import org.apache.struts.util.MessageResources;

import com.tonny.blog.struts.form.*;

public class AddBlog extends BlogBaseAction{


  //------------------------------------------------------------ Local Forwards
  static final private String FORWARD_success = "success";
  static final private String FORWARD_failure = "failure";

  //------------------------------------------------------------ Action Methods

  public ActionForward execute(ActionMapping mapping, ActionForm form,
      HttpServletRequest request, HttpServletResponse response)
      throws Exception {
      
      if(!isLogin(request))return mapping.findForward(FORWARD_failure);
      service.addBlog((BlogForm)form,((BlogForm)form).getFile().getFileName());
      return mapping.findForward(FORWARD_success);
  }

}

import com.tonny.blog.bean.*;

import java.util.List;


public interface ItemDAO {
 
public boolean addItem(Item item);
 
public boolean removeItem(Long id);
 
public List loadItems();
 
public List loadItems(String topic);
 
public Item loadItem(Long id);
 
public boolean updatItem(Item item);


}

import com.tonny.blog.dao.*;

import net.sf.hibernate.cfg.Configuration;
import net.sf.hibernate.*;
import java.util.*;
import com.tonny.blog.bean.*;


public class ItemDAOHibernate extends DAOHibernate implements ItemDAO {
 public ItemDAOHibernate(){
    }

    public boolean addItem(Item item){
        try{
         beginTransaction();
      session.save(item);
      commit();
            return true;
       }
      catch(HibernateException e){
            rollback();
            return false;
        }


    }
    public boolean updatItem(Item item){
        try{
         beginTransaction();
         Item it=item;
         it=(Item)session.load(Item.class,(item.getId()));
         
         it.setTopic(item.getTopic());
         System.out.println("item.getTopic()"+item.getTopic());
         it.setContent(item.getContent());
         System.out.println("item.getContent()"+item.getContent());
          session.flush();
      commit();
            return true;
       }
      catch(HibernateException e){
          System.err.println("========＞hibernate exception"+e);
            rollback();
            return false;
        }


    }
     public boolean removeItem(Long id){
        try{
      beginTransaction();
       session.delete("from com.tonny.blog.bean.Item as item where item.id="+id);
      commit();
            return true;

         }
        catch(HibernateException e){
            rollback();
            return false;
        }

     }

    public List loadItems(){

     List list=null;
  &nb
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