这个页面对应的ActionForm 写的不对，谁帮忙改改啊 急a~~~~大大们帮忙看下啊

------jsp页面<%@page contentType="text/html;charset=utf-8"%>
<%@include file="../common/taglib.jsp"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>无忧考试 – 考试无忧</title>
<%@include file="../common/common.jsp"%>
</head>
<body>
<!-- 头部开始 -->
<%@include file="../common/head.jsp"%>
<!-- 头部结束 -->
<hr/>
<div class='your_position'>
您现在的位置:&nbsp;
<a href='startSelect.do'>登录选择</a> &gt;&gt;
<a href='stuLoginForm.do'>学生登录</a> &gt;&gt;
<font style='color: #cc3300'><strong>个人信息</strong> </font>
</div>
<div class="book"> <!--左栏开始-->
<div id="left" class="book_left">
<div id="__fenleiliulan">
<div class=second_l_border2>
<h2>
考试科目选择
</h2>
<ul>
<c:forEach items="${courseList}" var="course">
<!--三级分类开始-->
<li>
<div>
<div class=second_fenlei>
&middot;
</div>
<div class='second_fenlei'>
<a href='stuExamSelect.do?courseCid=${course.cid}'>${course.coursename}&nbsp;</a>
</div> </div>
</li>
<div class=clear></div>
</c:forEach>
<!--三级分类结束-->
<li>
<div></div>
</li>
</ul>
</div>
</div>
</div> <!--左栏结束--> <!--中栏开始-->
<div class="book_center"> <!--图书列表开始-->
<div id="divRight" class="list_right">
<div id="book_list" class="list_r_title">
<div class="list_r_title_text">
排序方式
</div>
<html:form action="stuCourseList.do">
<html:select onchange="location='stuCourseList.do?order='+this.value" property='order' size='1'
styleClass='list_r_title_ml'>
<c:forEach items="${orderOptions}" var="order">
<html:option style='color: #c3c3c3' value='${order.key}'>
<bean:message key="${order.value}" />
</html:option>
</c:forEach>
</html:select>
</html:form>
<div id="divTopPageNavi" class="list_r_title_text3"> <!--分页导航开始--> <c:choose> 
<c:when test="${sclForm.page gt 1}">
<div class='list_r_title_text3a'>
<a name=link_page_next href="stuCourseList.do?page=${sclForm.page-1}">
<img src='<%=request.getContextPath()%>/images/page_up.gif' />
</a>
</div>
</c:when>
<c:otherwise>
<div class='list_r_title_text3a'>
<img
src='<%=request.getContextPath()%>/images/page_up_gray.gif' />
</div>
</c:otherwise>
</c:choose> <div class='list_r_title_text3b'>
第${sclForm.page}页/共${totalPages}页
</div>
<c:choose>
<c:when test="${sclForm.page < totalPages}">
<div class='list_r_title_text3a'>
<a name=link_page_next href="stuCourseList.do?page=${sclForm.page+1}">
<img src='<%=request.getContextPath()%>/images/page_down.gif' />
</a>
</div>
</c:when>
<c:otherwise>
<div class='list_r_title_text3a'>
<img
src='<%=request.getContextPath()%>/images/page_down_gray.gif' />
</div>
</c:otherwise>
</c:choose> <!--分页导航结束-->
</div>
</div>
<c:forEach items="${stuCourseList}" var="stuCourse">
<!--商品条目开始-->
<div class="list_r_list">
<h2>
<a name="link_prd_name" href='#' target="_blank">${stuCourse.coursename
}</a>
</h2>
<h4 class="list_r_list_h4">
考生：
<a target='_blank' href='#' name='作者'>${session_student.studentname}</a>
</h4>
<h4>
分数：
${stuCourse.score}
</h4>
<span class="list_r_list_button"><a href="javascript:;"
onclick="location='stuExamSelect.do?subCourseCid=${subCourse.cid}'"> <!--  <img
src='<%=request.getContextPath()%>/images/buttom_goumai.gif' />-->
</a> </span>
</div>
<div class="clear"></div>
<!--商品条目结束-->
</c:forEach> <div class="clear"></div>
<div id="divBottomPageNavi" class="fanye_bottom"> </div>
</div>
<!--图书列表结束--> </div>
<!--中栏结束-->

<div class="clear"></div>
</div> <!--页尾开始 -->
<%@include file="../common/foot.jsp"%>
<!--页尾结束 --> </body>
</html>那个ActionForm---------StuCourseListForm.javapackage com.free.exam.form;import org.apache.struts.action.ActionForm;import com.free.exam.dao.CourseDao;
import com.free.exam.domain.Student;public class StuCourseListForm extends ActionForm {
private Integer cno;
private String sno;
private Integer page = 1;
private Integer order = CourseDao.ORDER_DEFAULT;

public Integer getCno() {
return cno;
}
public void setCno(Integer cno) {
this.cno = cno;
}


public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public Integer getPage() {
return page;
} public void setPage(Integer page) {
this.page = page;
} public Integer getOrder() {
return order;
} public void setOrder(Integer order) {
this.order = order;
this.page = 1;
}
}这个ActionForm 的sno 值为空...， 请问各位大大 页面的ActionForm有什么要求吗？ 还有哪个大大有空 能帮我贴出这个StuCourListForm.java 代码吗？？？