Hibernate多条件查询方法收录

• 本文介绍了两种Hibernate多条件查询的方法。一个是通用方法，另一个则是用sql拼接，将搜索的多个条件在外部(即调用方)封装在了数组中。

• 1. Hibernate多条件查询通用方法

//value[i]为第i个查询条件propertyName[i]的值          （本方法已通过测试）  

/*多条件查询,查询条件的值为空时自动除去该条件  
* rigor为true时采用精确查询  
*/ 

public List searchByPropertys(String model,String[]propertyName,Object[] value,int page,boolean rigor){    

    StringBuffer sqlBuffer = new StringBuffer();  

    String ralation=" like ";  

    if(rigor){  

     ralation=" = ";  
    }  
    sqlBuffer.append("from "+model+" as model\n");  

    int len=propertyName.length;  

    List list=new ArrayList();  

    boolean first=true;  

    for(int i=0;i< len;i++){  

     if(value[i]!=null){  

     if(first){      

      sqlBuffer.append(" where "+ "model."+ propertyName[i] + ralation+" ?\n");      
      list.add(value[i]);  
      first=false;  

     }else{      

      sqlBuffer.append(" and "+ "model."+ propertyName[i] +ralation+ " ?\n");      
      list.add(value[i]);       }      }      }      
     try {            
      Session session=getSession();               Query queryObject = session.createQuery(sqlBuffer.toString());  
             for(int i=0;i< list.size();i++){  

             if(rigor){  
              queryObject.setParameter(i, list.get(i));  
             }else{  

              queryObject.setParameter(i, "%"+list.get(i)+"%");  
             }                     }                          list=queryObject.list();              closeSession(session);  
      return list;  

         } catch (RuntimeException re) {  

            log.error("find by property name failed", re);  

            throw re;  
         }   }

2：hibernate多条件组合查询 之 sql 拼接

这个方法与上面第一节中的相同，只不过上面的方法是将搜索的多个条件在外部(即调用方)封装在了数组中。

public static void main(String[] args) {     

       Session session = null;     

       Transaction tx = null;     

       List list = null;     

       Criteria criteria = null;     

       try {     
                 session = HibernateSessionFactory.getSession();                tx = session.beginTransaction();                      DetachedCriteria detachedCriteria = DetachedCriteria     
                  .forClass(InfoTab.class);     

           String sql=" 1=1 ";     

           Integer pareaId = 0; // 父地区；     

           Integer careaId = 0; // 子地区；     

           Integer categoryId = 0; // 类别；     

           String infoPrivider = "中介"; // 来源；     

           String houseType= "地下室"; // 房屋类型；     

           Integer hxBedRoom=0; // 室；     

           Integer hxLivingRoom=0; // 厅；     

           String hzHouseStatus="有房出租"; // 合租类型;     

           String hzRequestSex="男"; // 性别要求；     

           String fixUp="尚未"; // 装修程度;     

           Integer lcHeightMolecuse=0; // 楼层；     

           String orientation="东南"; // 朝向要求;     

           Integer buildArea=2000; // 建筑面积；     

           Integer useArea=80; // 使用面积；     

           Integer rentalDigit=2000; // 租金/价格；     

           String title= "出租"; // 标题；     

           if(pareaId!=0)     
           {     
              sql+="pareaId=" + pareaId;     
           }     
           if(careaId!=0)     
           {     
              sql+=" and careaId=" + careaId;     
           }     
           if(categoryId!=0)     
           {     
              sql+=" and categoryId=" + categoryId;     
           }     
           if(!infoPrivider.equals(""))     
           {     
              sql+=" and infoPrivider='" + infoPrivider + "'";     
           }     
           if(!houseType.equals(""))     
           {     
              sql+=" and houseType='" + houseType +"'";     
           }     
           if(hxBedRoom!=0)     
           {     
              sql+=" and hxBedRoom=" + hxBedRoom;     
           }     
           if(hxLivingRoom!=0)     
           {     
              sql+=" and hxLivingRoom=" + hxLivingRoom;     
           }     
           if(!hzHouseStatus.equals(""))     
           {     
              sql+=" and hzHouseStatus='" + hzHouseStatus + "'";     
           }     
           if(!hzRequestSex.equals(""))     
           {     
              sql+=" and hzRequestSex='" + hzRequestSex +"'";     
           }     
           if(!fixUp.equals(""))     
           {     
              sql+=" and fixUp='" + fixUp + "'";     
           }     
           if(lcHeightMolecuse!=0)     
           {     
              sql+=" and lcHeightMolecuse=" + lcHeightMolecuse;     
           }     
           if(!orientation.equals(""))     
           {     
              sql+=" and orientation='" + orientation + "'";     
           }     
           if(buildArea!=0)     
           {     
               sql+=" and buildArea=" + buildArea;     
           }     
           if(useArea!=0)     
           {     
              sql+=" and useArea=" + useArea;     
           }     
           if(rentalDigit!=0)     
           {     
              sql+=" and rentalDigit=" + rentalDigit;     
           }     
           if(!title.equals(""))     
           {     
              sql+=" and title like '%" + title + "%'";     
           }     
           sql+=" order by id desc";     
                           System.out.println(sql);                      detachedCriteria.add(Restrictions.sqlRestriction(sql));                      criteria = detachedCriteria.getExecutableCriteria(session);                      list = criteria.list();                     
           for(int i=0;i< list.size();i++)     
           {                   InfoTab infoTab = (InfoTab)list.get(i);     
              System.out.println(infoTab.getTitle() +" "+ infoTab.getCategoryId() +" "+ infoTab.getPareaName() +" "+ infoTab.getCareaName() +" " + infoTab.getHouseType() +" " + infoTab.getInfoPrivider());     
           }                      tx.commit();           
       } catch (HibernateException he) {     
           he.printStackTrace();            }         }