J2EE-SSH实现数据增删改查示例

package com.dong.users.dao.impl; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.LockMode; import org.springframework.context.ApplicationContext; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import com.dong.users.dao.IUsersInfoDAO; import com.dong.users.entity.UsersInfo; /** * Data access object (DAO) for domain model class UsersInfo. * * @see com.dong.users.entity.UsersInfo * @author MyEclipse Persistence Tools */ public class UsersInfoDAO extends HibernateDaoSupport implements IUsersInfoDAO { private static final Log log = LogFactory.getLog(UsersInfoDAO.class); protected void initDao() { // do nothing } public void save(UsersInfo transientInstance) { log.debug("saving UsersInfo instance"); try { getHibernateTemplate().save(transientInstance); log.debug("save successful"); } catch (RuntimeException re) { log.error("save failed", re); throw re; } } public void delete(UsersInfo persistentInstance) { log.debug("deleting UsersInfo instance"); try { getHibernateTemplate().delete(persistentInstance); log.debug("delete successful"); } catch (RuntimeException re) { log.error("delete failed", re); throw re; } } public UsersInfo findById(java.lang.Integer id) { log.debug("getting UsersInfo instance with id: " + id); try { UsersInfo instance = (UsersInfo) getHibernateTemplate().get( "com.dong.users.entity.UsersInfo", id); return instance; } catch (RuntimeException re) { log.error("get failed", re); throw re; } } public List findByExample(UsersInfo instance) { log.debug("finding UsersInfo 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 UsersInfo instance with property: " + propertyName + ", value: " + value); try { String queryString = "from UsersInfo 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 findByUserName(Object userName) { return findByProperty(USER_NAME, userName); } public List findByUserPassword(Object userPassword) { return findByProperty(USER_PASSWORD, userPassword); } public List findAll() { log.debug("finding all UsersInfo instances"); try { String queryString = "from UsersInfo"; return getHibernateTemplate().find(queryString); } catch (RuntimeException re) { log.error("find all failed", re); throw re; } } public UsersInfo merge(UsersInfo detachedInstance) { log.debug("merging UsersInfo instance"); try { UsersInfo result = (UsersInfo) getHibernateTemplate().merge( detachedInstance); log.debug("merge successful"); return result; } catch (RuntimeException re) { log.error("merge failed", re); throw re; } } public void attachDirty(UsersInfo instance) { log.debug("attaching dirty UsersInfo instance"); try { getHibernateTemplate().saveOrUpdate(instance); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } public void attachClean(UsersInfo instance) { log.debug("attaching clean UsersInfo instance"); try { getHibernateTemplate().lock(instance, LockMode.NONE); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } public static IUsersInfoDAO getFromApplicationContext(ApplicationContext ctx) { return (IUsersInfoDAO) ctx.getBean("UsersInfoDAO"); } }