hql查询实例

1、设计思路

（1）在页面中设计一个下拉框，数据取自数据库；

（2）查询是用hql查询。

2、设计实例

（1）Java模型层

public class Tree
{
      private String id;

      private String name;

      //id和name的get和set方法 
}

public List<Tree> findTree();

@Override
public List<Tree> findTree()
{
      String hql = "from Tree tree order by tree.id";
      Query query = sessionFactory.getCurrentSession().createQuery(hql);
      List<Tree> list = query.list();
      return list;
}

public List<Tree> findTree();

@Override
public List<Tree> findTree()
{
       return treeDao.findTree();
}

private List<Tree> list;

//list get和set方法

@Resource(name="treeService")
private TreeService treeService;

@Override
@Action(value="tree",results={@Result(name="success",location="../../tree.jsp")})
public String execute() throws Exception
{
       list = treeService.findTree();
       return SUCCESS;
}

<label id="tree">树木：</label>
<select id="treeData">
     <option value="0">全部</option>
     <c:forEach items="${list}" var="tree">
          <option value="${tree.id}">${tree.name}</option>
     </c:forEach>
</select>

hql查询实例

原文：http://blog.csdn.net/you23hai45/article/details/19503649