userdao.java

jsp + struts + spring + hibernate实例

package com.easyjf.example.business.hibernate;
import java.util.Collection;
import java.util.List;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.easyjf.example.business.IUser;
import com.easyjf.example.business.IUserService;
public class UserDao extends HibernateDaoSupport implements IUserService {
	public boolean del(IUser user) {
		boolean ret=true;
		try{
		this.getHibernateTemplate().delete(user);
		}
		catch(Exception e)
		{
			ret=false;
		}
		return ret;
	}	
	public List query(String scope,Collection paras) {
		return this.getHibernateTemplate().find("from User where "+scope,paras.toArray());		
	}
	public IUser login(String userName, String password, String ip) {
		IUser user=readByName(userName);
		if(user==null || user.getPassword()==null ||(!user.getPassword().equals(password)))//用户不存在或者密码不正确
		{
		return null;
		}		
		return user;	
	}
	public IUser newUser() {		
		return new User();
	}
	public IUser read(String cid) {		
		return (IUser)this.getHibernateTemplate().get(User.class,cid);
	}

	public IUser readByName(String userName) {		
		List list= this.getHibernateTemplate().find("from User where userName='"+userName+"'");
		if(list!=null)return (IUser)list.get(0);
		else 
			return null;
	}

	public boolean save(IUser user) {		
		boolean ret=true;
		try{
		this.getHibernateTemplate().save(user);
		}
		catch(Exception e)
		{
			ret=false;
		}
		return ret;	
	}
	
	public boolean update(IUser user) {
		boolean ret=true;
		try{
		this.getHibernateTemplate().update(user);
		}
		catch(Exception e)
		{
			e.printStackTrace();
			ret=false;
		}
		return ret;	
	}	
}