-
find(String hql); //普通查询
示例：this.gethibernateTemplate().find(“from User”); -
find(String hql,Object value);//一个查询条件
示例：this.gethibernateTemplate().find(“from User u where u.name=?”,“test”);
-
find(String hql,Object[] values);// 多个查询条件
示例：this.gethibernateTemplate().find(“from User u where u.name=? and u.pwd=?”,new String[]{“test”,“123”});
-
findByExample(Object exampleEntity,int firstResult, int maxResults)//分页使用
示例：
User user= new User(); u.setActive(“Active”);
List list=this.getHibernateTemplate().findByExample(user,firstResult,maxResults);
查询结果：状态为Active的用户（对象从0到20 计数）
-
findByNamedParam(String hql,String paramName,Object value); //一个查询条件
示例：
hql="from User u where u.name=:parName ";
paramName= “parName”;
value=“bb”
List list = this.getHibernateTemplate.findByNamedParam(hql,paramName,value);
查询结果：姓名为bb的用户
-
findByNamedParam(String queryString , String[] paramName , Object[] value) //多个查询条件
示例：
hql="from User u where u.name=:myname and u.pwd =:mypwd ";
String[] paramName= new String[]{“myname”,“mypwd”};
Sring[] value=new Strign[]{“bb”,“123”};
List list = this.getHibernateTemplate.findByNamedParam(hql,paramName,value);
查询结果：姓名为bb密码为123的用户
7.分页HQL示例
public List excuteHqlPage(final String hqlStr, final int startRow,final int rowCount) throws DaoException {
List<Object[]> list;
try {
list = getHibernateTemplate().executeFind(new HibernateCallback() {
public Object doInHibernate(Session session)
throws HibernateException, SQLException {
org.hibernate.Query query = (org.hibernate.Query) session.createQuery(hqlStr);
query.setFirstResult(startRow);// 定义从第几条开始查询
query.setMaxResults(rowCount);// 定义返回的记录数
List list = query.list();
return list;
}
});
} catch (Exception e) {
throw new DaoException(DaoException.ERRORCODE_EXCUTEHQL);
}
return list;
}
-
根据HQL/SQL 查询
public List queryByHql(final String hql, final Object[] prams,final String sql) {
return (List) getHibernateTemplate().execute(new HibernateCallback(){
public Object doInHibernate(Session session) throws HibernateException, SQLException { if(hql!=null && hql.length()>0){ Query query=session.createQuery(hql); if(prams!=null && prams.length>0){ for(int i=0;i<prams.length;i++){ query.setParameter(i,prams[i]); }}
return query.list();
}else{
SQLQuery sqlquery=session.createSQLQuery(sql);
return sqlquery.list();
}
}
});
}
-
保存/更新
public String saveOrUpdateObject(ISuperVO vo) throws DaoException {
try {
String id = null; if (StringUtil.isEmpty(vo.getPid())) { getHibernateTemplate().save(vo); } else { getHibernateTemplate().merge(vo); } id = vo.getPid(); return id;} catch (Exception e) {
e.printStackTrace();
}
}
-
getHibernateTemplate().delete(vo); //删除
-
根据条件删除
public Integer deleteObjectsByWherePart(final Class voClass,final String wherePart, final Object[] parmaters)throws DaoException {
try {
Integer count = (Integer) getHibernateTemplate().execute( new HibernateCallback() {
public Object doInHibernate(Session session)throws HibernateException, SQLException {
Integer coun = null;
String hql = "delete from " + voClass.getName()+ " where 1=1 ";
if (wherePart != null && wherePart.trim().length() > 0) {
hql = hql + " and " + wherePart;
}
Query query = session.createQuery(hql);
Object obj = null;
if (parmaters != null && parmaters.length > 0) {
for (int i = 0; i < parmaters.length; i++) {
obj = parmaters[i];
query.setParameter(i, obj);
}
}
coun = query.executeUpdate();
return coun;
}
});
return count;
} catch (Exception e) {
e.printStackTrace();
}
}