Criteria Query常用的查询限制方法



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();
}

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例1：

表中的数据为:

userid name username password age

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

1    张三  zhang3   zhang3   20

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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;