将JDBC查询的结果转成List，再拼接在一起的方法
将JDBC查询的结果转成List，再拼接在一起的方法：

   conn = getConnection();pstmt =  conn.prepareStatemen(sql);  pstmt.setString(1, id);  rs = pstmt.executeQuery();  while(rs.next()){  list.add(rs.getString(1));         }  StringBuffer sb = new StringBuffer();                           //用一个StringBuffer 方法来进行遍历拼接Iterator it = list.iterator();boolean isNull = it.hasNext();while (isNull) {Object o = it.next();sb.append(String.valueOf(o));if (isNull) {sb.append("; ");}}     return sb;//拼接的结果