JSP页面不能显示一个数据·求解决,该如何解决

JSP页面不能显示一个数据·求解决
dAL的代码

	public givebean querygive(int rid) throws Exception {

			Connection con = db.Shujuku();

			Statement sts = null;

			givebean customer1 = new givebean();

			try {

				sts = con.createStatement();

				String sql = "select * from giveback where readerID='" + rid

				+ "';";

				ResultSet rs1 = sts.executeQuery(sql);

				while (rs1.next()) {					断点设了这里可以会跑2次 ，能读出所有需要的查询

					customer1.setBookName(rs1.getString("bookName"));

					customer1.setReaderName(rs1.getString("readerName"));

					customer1.setReadertime(rs1.getString("readertime"));

					customer1.setGivebacktime(rs1.getString("givebacktime"));

					customer1.setGuotime(rs1.getString("guotime"));


				}

				return customer1;

			} catch (Exception ex) {


			} finally {

				try {

					sts.close();

					con.close();

				} catch (Exception e) {

					e.printStackTrace();

				}

			}

			return null;


		}

servlet的跳回去部分的代码

	int rid =Integer.parseInt(request.getParameter("rid"));		

//		System.out.println("输入账号"+rid);

		readerbean userArray = null;

		queryDal queryreader = new queryDal();

        givebean userArray1 = null;

        queryDal querygive = new queryDal();

		try {

			         			   

			userArray = queryreader.queryreader(rid);

			request.setAttribute("rs", userArray);

			userArray1 =querygive.querygive(rid);这个是需要输出多个值得对应上面那个DAL

			request.setAttribute("rs1", userArray1);

		    request.getRequestDispatcher("/jieyeu.jsp").forward(request, response);

JSP页面的代码

    <% 

                  

     givebean rb1 = (givebean) request.getAttribute("rs1");    

      if (null != rb1) {

%>    

				  <tr>

                 <td height="32" background="Images/borrow_if.gif">&nbsp;添加的依据：

                   <input name="f" type="radio" class="noborder" value="barcode" checked>

                   图书条形码 &nbsp;&nbsp;

                   <input name="f" type="radio" class="noborder" value="bookname">

图书名称&nbsp;&nbsp;

<input name="inputkey" type="text" id="inputkey" size="50">

                   <input name="submit2" type="button" class="btn_grey" value="确定" >


                   </td>

               </tr> 


          <tr>

            <td valign="top" bgcolor="#FCEC9A" style="padding:5px"><table width="99%" border="1" cellpadding="0" cellspacing="0" bordercolor="#FFFFFF" bordercolorlight="#FFFFFF" bordercolordark="#F6B83B" bgcolor="#FFFFFF">

                   <tr align="center" bgcolor="#F9D16B">

                     <td width="23%" height="25">图书名称</td>

                     <td width="12%">借书人</td>

                     <td width="17%">借书日期</td>

                     <td width="14%">到期时间</td>

                     <td colspan="2">借书天数</td>

                      <td width="14%">操作</td>

                   

                   </tr>


                   <tr bgcolor=white>