@Override
 public boolean hangkongAdd(Hangkong hk) throws Exception {
   // TODO 增
   String sql = "insert into hangkong (daima,name,shui,bizongId) values (?,?,?,?)";
   int count = this.update(sql, hk.getDaima(), hk.getName(), hk.getShui(), hk.getBizongId());
   return count > 0;
 }
 @Override
 public boolean hangkongUpdate(Hangkong hk) throws Exception {
   // TODO Auto-generated method stub
   String sql = "update hangkong set daima=?,name=?,shui=?,bizongId=? where id=?";
   int count =
       this.update(sql, hk.getDaima(), hk.getName(), hk.getShui(), hk.getBizongId(), hk.getId());
   return count > 0;
 }