java处理列转行

 Map> map = new HashMap>();
 while(rs.next()){
     if(map.get(rs.getString("TJBH"))==null){
          Map map2 = new HashMap();    
          map2.put(rs.getString("CCDM"), rs.getString("SBNR"));
          map.put(rs.getString("TJBH"), map2);     
       }else{
                map.get(rs.getString("TJBH")).put(rs.getString("CCDM"), rs.getString("SBNR"));
                }
            }
 rs.close();