急！急！！急！！！获取表单数据类型问题！

<form id="form2" name="form2" method="post" action="Comnum">

			<div align="center">

				<table width="300" border="1">

					<tr>

						<td>

							<div align="right">

								查询机器号：

							</div>

						</td>

						<td>

							<div align="left">

								<label>

									<input name="comnum" type="text" id="comnum" />

								</label>

							</div>

						</td>

					</tr>

					<tr>

						<td>

							 

						</td>

						<td>

							<label>

								<div align="left">

									<input type="submit" name="Submit" value="确定" />

									<input type="reset" name="Submit2" value="清空" />

								</div>

							</label>

						</td>

					</tr>

				</table>

			</div>

		</form>

String comnum=request.getParameter("comnum");

		OrderitemDao otdao = new OrderitemDao();

		ArrayList<Orderitem> otlist = otdao.FindByComnum(Integer.parseInt(comnum));

		System.out.println(otlist.size());

		request.removeAttribute("otlist");

		request.setAttribute("otlist", otlist);

		request.getRequestDispatcher("planlist.jsp").forward(request, response);