Share two method for JDBC's ResultSet convert into different data format list, one is for json, other is object instance.
 
/**
    * Convert ResultSet to List, data format for JSON
    * @param rs
    * @return    
    *      data format:[{CORPNO=TCS0232,TAXNO=Tax001},{CORPNO=TCS0232,TAXNO=Tax001}]
    * @throws SQLException
    */
  @SuppressWarnings( "unchecked")
   private static List convertList(ResultSet rs) throws SQLException {    
     //Container
    List list = new ArrayList();    
     //Get the element of resultSet
    ResultSetMetaData md = rs.getMetaData();    
     //Map rowData;
     int columnCount = md.getColumnCount();    
     //Use Map
     while (rs.next()) {
      Map rowData = new HashMap();    
       //Fill up
       for ( int i = 1; i <= columnCount; i++) {    
        rowData.put(md.getColumnName(i), rs.getObject(i));    
      }    
       //Fill up
      list.add(rowData);    
    }    
     //back
     return list;    

    }    

   /**
    * Convert ResultSet to List, data format for Object
    *    
    * @param rs
    * @param clazz
    * @return
    *        A list of data object( For the some Class) instance.
    * @throws Exception
    */
  @SuppressWarnings( "unchecked")
   public static List populate(ResultSet rs,Class clazz) throws Exception{
                 //Get the element of resultSet
    ResultSetMetaData metaData = rs.getMetaData();    
                 //Get count
                 int colCount = metaData.getColumnCount();                    
                 //Container
                List ret = new ArrayList();            
                
                 //Get Object attributes
                Field[] fields = clazz.getDeclaredFields();        
                 //Construct it
                 while(rs.next()){
                        Object newInstance = clazz.newInstance();    
                         for( int i=1;i<=colCount;i++){    
                                 try{
                                        Object value = rs.getObject(i);
                                         for( int j=0;j                                                Field f = fields[j];
                                                 if(f.getName().equalsIgnoreCase(metaData.getColumnName(i).replaceAll( "_",""))){
                                                        BeanUtils.copyProperty(newInstance,f.getName(),value);
                                                }
                                        }
                                } catch (Exception e) {
                                         // TODO: handle exception
                                        e.printStackTrace();
                                }
                        }
                         //Fill into
                        ret.add(newInstance);
                }
                 //Back
                 return ret;
        }