AJAX实现用户登录注册（Struts+Spring+Hibernate+Ajax框架）

package com.star.ajaxtest.dao.impl; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.LockMode; import org.hibernate.Session; import org.springframework.context.ApplicationContext; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import com.star.ajaxtest.dao.IUserTableDAO; import com.star.ajaxtest.entity.UserTable; public class UserTableDAOImpl extends HibernateDaoSupport implements IUserTableDAO { private static final Log log = LogFactory.getLog(UserTableDAOImpl.class); protected void initDao() { // do nothing } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#save(com.star.ajaxtest.entity.UserTable) */ public Integer save(UserTable transientInstance) { log.debug("saving UserTable instance"); Integer uid = null; try { uid = (Integer) getHibernateTemplate().save(transientInstance); log.debug("save successful"); return uid; } catch (RuntimeException re) { log.error("save failed", re); return uid; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#delete(com.star.ajaxtest.entity.UserTable) */ public void delete(UserTable persistentInstance) { log.debug("deleting UserTable instance"); try { getHibernateTemplate().delete(persistentInstance); log.debug("delete successful"); } catch (RuntimeException re) { log.error("delete failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findById(java.lang.Integer) */ public UserTable findById(java.lang.Integer id) { log.debug("getting UserTable instance with id: " + id); try { UserTable instance = (UserTable) getHibernateTemplate().get( "com.star.ajaxtest.entity.UserTable", id); return instance; } catch (RuntimeException re) { log.error("get failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findByExample(com.star.ajaxtest.entity.UserTable) */ public List findByExample(UserTable instance) { log.debug("finding UserTable 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; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findByProperty(java.lang.String, java.lang.Object) */ public List findByProperty(String propertyName, Object value) { log.debug("finding UserTable instance with property: " + propertyName + ", value: " + value); try { String queryString = "from UserTable as model where model." + propertyName + "= ?"; return getHibernateTemplate().find(queryString, value); } catch (RuntimeException re) { log.error("find by property name failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findByUserName(java.lang.Object) */ public List findByUserName(Object userName) { return findByProperty(USER_NAME, userName); } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findByPassword(java.lang.Object) */ public List findByPassword(Object password) { return findByProperty(PASSWORD, password); } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#findAll() */ public List findAll() { log.debug("finding all UserTable instances"); try { String queryString = "from UserTable"; return getHibernateTemplate().find(queryString); } catch (RuntimeException re) { log.error("find all failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#merge(com.star.ajaxtest.entity.UserTable) */ public UserTable merge(UserTable detachedInstance) { log.debug("merging UserTable instance"); try { UserTable result = (UserTable) getHibernateTemplate().merge( detachedInstance); log.debug("merge successful"); return result; } catch (RuntimeException re) { log.error("merge failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#attachDirty(com.star.ajaxtest.entity.UserTable) */ public void attachDirty(UserTable instance) { log.debug("attaching dirty UserTable instance"); try { getHibernateTemplate().saveOrUpdate(instance); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } /* (non-Javadoc) * @see com.star.ajaxtest.dao.IUserTableDAO#attachClean(com.star.ajaxtest.entity.UserTable) */ public void attachClean(UserTable instance) { log.debug("attaching clean UserTable instance"); try { getHibernateTemplate().lock(instance, LockMode.NONE); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } /** * 查询用户输入的用户名是否存在 * @param ctx * @return */ /*public UserTable findByUserName(String uname){ String hql = "from UserTable where userName=?"; Session session = this.getSession(); } */ public static IUserTableDAO getFromApplicationContext(ApplicationContext ctx) { return (IUserTableDAO) ctx.getBean("UserTableDAO"); } }