struts2框架——从后台取得数据集，并在前台页面循环显示

1.CourseBean.java

 public class CourseBean {

     private String f_courseId          = "";
     private String f_term              = "";
     private String f_week              = "";
     private String f_credit          = "";
     private String f_coursename     = "";
     private String f_courseStart    = "";
     private String f_courseEnd      = "";
     private String f_teacherId      = "";
     private String f_roomId          = "";
     private String f_subjectId      = "";
     private String f_gradeId          = "";
     private String f_periodId          = "";

         //变量的get和set方法
         //。。。
 } 

2.CourseListBean.java

 public class CourseListBean {

     private List<CourseBean> courseList = new ArrayList<CourseBean>();

     public List<CourseBean> getCourseList() {
         return courseList;
     }

     public void setCourseList(List<CourseBean> courseList) {
         this.courseList = courseList;
     }

 }

3.ClassShowAction.java

     public String classShow() throws SQLException {
         // TODO Auto-generated method stub
         HttpServletRequest request = ServletActionContext.getRequest();
         HttpSession session = request.getSession();

         // userBean
         String username = (String) session.getAttribute("username");
         UserBean userBean = new UserBean();
         userBean.setUsername(username);
         // pageInfoBean
         PageInfoBean pageInfoBean = new PageInfoBean();
         pageInfoBean.setIntPage(this.getIntPage());

         // 处理和设置 courseListBean，pageInfoBean
         CourseListBean courseListBean = new CourseListBean();
         courseListBean = courseService.classShow(userBean, pageInfoBean);
         request.setAttribute("courseListBean", courseListBean);
         request.setAttribute("pageInfoBean", pageInfoBean);

         return "Success";

     }

4.数据注入：courseListBean 和 courseBean获取

     public CourseListBean classShow(UserBean userBean, PageInfoBean pageInfoBean)
             throws SQLException {

         // 数据库连接
         sql = "select * from t_course where f_teacherId = (select f_userId from t_user where f_username = '"
                 + userBean.getUsername() + "')";
         rs = conn.executeQuery(sql);
         // 获取courseListBean
         CourseListBean courseListBean = new CourseListBean();
         for (int i = 0; i < num; i++) {
　　　　　　　　　//courseBean的获取，即courseBean的数据注入
             CourseBean courseBean = new CourseBean();
             courseBean.setF_courseId(rs.getString("f_courseId"));
             courseBean.setF_term(rs.getString("f_term"));
             courseBean.setF_week(rs.getString("f_week"));
             courseBean.setF_credit(rs.getString("f_credit"));
             courseBean.setF_coursename(rs.getString("f_coursename"));
             courseBean.setF_courseStart(rs.getString("f_courseStart"));
             courseBean.setF_courseEnd(rs.getString("f_courseEnd"));
             courseBean.setF_teacherId(rs.getString("f_teacherId"));
             courseBean.setF_roomId(rs.getString("f_roomId"));
             courseBean.setF_subjectId(rs.getString("f_subjectId"));
             courseBean.setF_gradeId(rs.getString("f_gradeId"));
             courseBean.setF_periodId(rs.getString("f_periodId"));
               //courseListBean的获取，即courseLiseBean的数据注入
             courseListBean.getCourseList().add(courseBean);
             rs.next(); // 下一条记录
         }

         conn.close();
         return courseListBean;
     }

5.前台展示：

 <!-- 班级列表 -->
         <table width="675" border="0" align="center" cellpadding="4"
             cellspacing="1" bgcolor="#3D7BA3">
             <tr bgcolor="94C9E7" align="center">
                 <td>班级ID</td>
                 <td>班级名</td>
                 <td>学期</td>
                 <td>学分</td>
                 <td>课程开始周</td>
                 <td>课程结束周</td>
                 <td>操&nbsp;&nbsp;&nbsp;&nbsp;作</td>
             </tr>

             <s:iterator value="#request.courseListBean.courseList">
                 <tr bgcolor="ffffff" align="center">
                     <td><s:property value="f_courseId" /></td>
                     <td><s:property value="f_coursename" /></td>
                     <td><s:property value="f_term" /></td>
                     <td><s:property value="f_credit" /></td>
                     <td><s:property value="f_courseStart" /></td>
                     <td><s:property value="f_courseEnd" /></td>
                     <td><a href="">查看</a> <a href="">删除</a></td>
                 </tr>
             </s:iterator>
         </table>