code: public int count(String sql, Object[] params) {
  				
  		int rowCount = 0;
  		try{
  			Map<String, Object> resultMap = null;
  			if (params == null || params.length == 0) {
  				resultMap = getProxy().queryForMap(sql);
  			} else {
  				resultMap = getProxy().queryForMap(sql, params);
  			}
  			Iterator<Map.Entry<String, Object>> it = resultMap.entrySet().iterator();
  			if(it.hasNext()){
  				Map.Entry<String, Object> entry = it.next();
  				rowCount = ((Long)entry.getValue()).intValue();
  			}
  		}catch(EmptyResultDataAccessException e){
  			
  		}
  		
  		
  		return rowCount;
  	}
docs: 获取总行数
  get count
  @param sql
  @param params
  @return