userdaoimpl.java

ssh整合框架

package com.demo.dao.impl;

import java.sql.SQLException;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.demo.dao.IUser;
import com.demo.domain.User;
import com.demo.service.IUserservice;

/**
 * Data access object (DAO) for domain model class User.
 * 
 * @see com.demo.domain.User
 * @author MyEclipse Persistence Tools
 */

public class UserDaoImpl extends HibernateDaoSupport implements IUser {
	private static final Log log = LogFactory.getLog(UserDaoImpl.class);

	// property constants
	public static final String NAME = "name";

	public static final String AGE = "age";

	public static final String PASSWORD = "password";

	protected void initDao() {
		// do nothing
	}

	public void save(User transientInstance) {
		log.debug("saving User instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(User persistentInstance) {
		log.debug("deleting User instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public User findById(java.lang.Integer id) {
		log.debug("getting User instance with id: " + id);
		try {
			User instance = (User) getHibernateTemplate().get(
					"com.demo.domain.User", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(User instance) {
		log.debug("finding User instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding User instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from User as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByName(Object name) {
		return findByProperty(NAME, name);
	}

	public List findByAge(Object age) {
		return findByProperty(AGE, age);
	}

	public List findByPassword(Object password) {
		return findByProperty(PASSWORD, password);
	}

	public List findAll() {
		log.debug("finding all User instances");
		try {
			String queryString = "from User";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public User merge(User detachedInstance) {
		log.debug("merging User instance");
		try {
			User result = (User) getHibernateTemplate().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(User instance) {
		log.debug("attaching dirty User instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(User instance) {
		log.debug("attaching clean User instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static UserDaoImpl getFromApplicationContext(ApplicationContext ctx) {
		return (UserDaoImpl) ctx.getBean("UserDAO");
	}

	// ///////////////////////////////
	public void add(User user) {
		// TODO Auto-generated method stub
		this.save(user);
	}

	//login 
	public User find(final String name,final String password) {
		// TODO Auto-generated method stub
		System.out.println(name+"\t"+password);
		try {	
			User user =(User)this.getHibernateTemplate().execute(new HibernateCallback() {
				public Object doInHibernate(Session session)
						throws HibernateException, SQLException {
					// TODO Auto-generated method stub
					Query query = session.createQuery("From User as user where user.name=? and user.password=? ");
					query.setString(0, name);
					query.setString(1, password);
					return query.uniqueResult();
				}
			});
			log.info("执行成功！");
			return user;
		}catch(Exception ex) {
			log.error("异常："+ex.getMessage());
			return null;
		}
		
	}


}