nbsp; ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
Item item=new Item(blogForm.getTopic(),blogForm.getContent(),
FileUpload.upload(blogForm.getFile(),path),new Date());
itemDAO.addItem(item);
return true;
}
public boolean removeBlog(Long id) {
ReviewDAO reviewDAO=DAOFactory.getInstance().getReviewDAO();
ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
itemDAO.removeItem(id);
return reviewDAO.removeReviews(id);
}
public boolean addReview(Long topicId,ReviewForm reviewForm){
ReviewDAO reviewDAO=DAOFactory.getInstance().getReviewDAO();
Review review=new Review(reviewForm.getName(),reviewForm.getContent(),
topicId,new Date());
return reviewDAO.addReview(review);
}
public boolean updateBlog(Long id,String content,String topic){
ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
Item item=new Item();
item.setId(id);
item.setContent(content);
item.setTopic(topic);
return itemDAO.updatItem(item);
}
public boolean addUser(UserForm userForm){
UserDAO userDAO=(UserDAO) DAOFactory.getInstance().getUserDAO();
User user=new User(userForm.getName(),userForm.getPassword());
return userDAO.addUser(user);
}
public boolean removeReview(Long id){
ReviewDAO reviewDAO=DAOFactory.getInstance().getReviewDAO();
return reviewDAO.removeReview(id);
}
public List getItems(){
ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
List items=itemDAO.loadItems();
List itemViews=new ArrayList();
for(Iterator it=items.iterator();it.hasNext();){
Item item=(Item)it.next();
ItemView itemView=new ItemView();
itemView.setContent(item.getContent());
itemView.setDate(item.getDate());
itemView.setFile(item.getFile());
itemView.setId(item.getId());
itemView.setTopic(item.getTopic());
itemViews.add(itemView);
}
return itemViews;
}
public ItemView getEditItem(Long id){
ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
Item item=itemDAO.loadItem(id);
ItemView itemView=new ItemView();
itemView.setContent(item.getContent());
itemView.setDate(item.getDate());
itemView.setFile(item.getFile());
itemView.setId(item.getId());
itemView.setTopic(item.getTopic());
return itemView;
}
public List search(SearchForm searchForm) {
ItemDAO itemDAO=DAOFactory.getInstance().getItemDAO();
List items=itemDAO.loadItems(searchForm.getKeyword());
List itemViews=new ArrayList();
for(Iterator it=items.iterator();it.hasNext();){
Item item=(Item)it.next();
ItemView itemView=new ItemView();
itemView.setContent(item.getContent());
itemView.setDate(item.getDate());
itemView.setFile(item.getFile());
itemView.setId(item.getId());
itemView.setTopic(item.getTopic());
itemViews.add(itemView);
}
return itemViews;
}
} 下面是ACTION如何调用以上个服务：
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);
}
} 下一步为DAO层来操作数据库：
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);
} DAOFACTORY调用实力化方法：
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;
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