Criteria Query常用的查询限制方法

来源：互联网发布：恋爱知乎编辑：程序博客网时间：2024/05/21 11:22

Restrictions.like(属性名, 查询条件的值, 匹配方式)：

Restrictions.in(属性名, 查询条件的值, 匹配方式)：

Restrictions.eq(属性名, 查询条件的值, 匹配方式)：

CriteriaQuery常用的查询限制方法

Restrictions.eq() equal，=
Restrictions.allEq() 参数为Map对象，使用key/value进行多个等于的对比，相当于多个Restrictions.eq()的效果
Restrictions.gt() greater-than, >
Restrictions.lt() less-than, <
Restrictions.le() less-equal, <=
Restrictions.between() 对应SQL的between子句
Restrictions.like() 对应SQL的like子句
Restrictions.in() 对应SQL的in子句
Restrictions.and() and关系
Restrictions.or() or关系
Restrictions.isNull() 判断属性是否为空，为空返回true，否则返回false
Restrictions.isNotNull() 与Restrictions.isNull()相反
Order.asc() 根据传入的字段进行升序排序
Order.desc() 根据传入的字段进行降序排序
MatchMode.EXACT 字符串精确匹配，相当于“like 'value'”
MatchMode.ANYWHERE 字符串在中间位置，相当于“like '%value%'”
MatchMode.START 字符串在最前面的位置，相当于“like 'value%'”
MatchMode.END 字符串在最后面的位置，相当于“like '%value'”

public List search(TblFwxx condition) { Session session = this.getSession();Criteria c = session.createCriteria(TblFwxx.class);if (null != condition) {if (condition.getTitle() != null && !condition.getTitle().equals("")) {c.add(Restrictions.like("title", condition.getTitle(), MatchMode.ANYWHERE));    } }  c.addOrder(Order.asc("fwid"));return c.list();}

-------------------------------------------------------------------------------------

例1：

表中的数据为:
userid name username password age
------------------------------------------------
1 张三 zhang3 zhang3 20

</pre> <wbr> 2 <wbr> <wbr>  <wbr>李四 <wbr> <wbr> li4 <wbr> <wbr> <wbr> <wbr> <wbr> li4 <wbr> <wbr> <wbr> <wbr> 21 <wbr> 3 <wbr> <wbr> <wbr> your <wbr> <wbr>test <wbr> <wbr> <wbr> <wbr> <wbr>test <wbr> <wbr> <wbr> <wbr> 30<p></p><p></p><p> </p><p></p><p>------------------------------------------------------------------------------------</p><p></p><p>例2：</p><p></p><p> <wbr></wbr></p><p><pre class="java" name="code">private Session session;public List criteria(SalChance salChance) {  List result = null;       try {       session = super.getSession();          Criteria cri = session.createCriteria(SalChance.class);         if(salChance.getChcCustName()!=null&&salChance.getChcCustName()!=""){          cri.add(Restrictions.like("chcCustName", salChance.getChcCustName(),MatchMode.ANYWHERE));         }         if(salChance.getChcTitle()!=null&&salChance.getChcTitle()!=""){          cri.add(Restrictions.like("chcTitle", salChance.getChcTitle(),MatchMode.ANYWHERE));         }         if(salChance.getChcLinkman()!=null&&salChance.getChcLinkman()!=""){          cri.add(Restrictions.like("chcLinkman", salChance.getChcLinkman(),MatchMode.ANYWHERE));         }         if(salChance.getChcStatus()!=null&&salChance.getChcStatus()!=""){          //System.out.println("状态为："+salChance.getChcStatus());          if(salChance.getChcStatus()=="all"){           cri.add(Restrictions.in("chcStatus", new Object[]{"2","3","4"}));          }else{           cri.add(Restrictions.eq("chcStatus", salChance.getChcStatus()));          }         }         result=cri.list();                 } catch (Exception e) {       e.printStackTrace();     }finally {               session.close();        }          return result;

0 0