struts2框架——从后台取得数据集，并在前台页面循环显示
1.CourseBean.java
1 public class CourseBean { 2 3 private String f_courseId = ""; 4 private String f_term = ""; 5 private String f_week = ""; 6 private String f_credit = ""; 7 private String f_coursename = ""; 8 private String f_courseStart = ""; 9 private String f_courseEnd = ""; 10 private String f_teacherId = ""; 11 private String f_roomId = ""; 12 private String f_subjectId = ""; 13 private String f_gradeId = ""; 14 private String f_periodId = ""; 15 16 //变量的get和set方法 17 //。。。 18 }
2.CourseListBean.java
1 public class CourseListBean { 2 3 private List<CourseBean> courseList = new ArrayList<CourseBean>(); 4 5 public List<CourseBean> getCourseList() { 6 return courseList; 7 } 8 9 public void setCourseList(List<CourseBean> courseList) { 10 this.courseList = courseList; 11 } 12 13 }
3.ClassShowAction.java
1 public String classShow() throws SQLException { 2 // TODO Auto-generated method stub 3 HttpServletRequest request = ServletActionContext.getRequest(); 4 HttpSession session = request.getSession(); 5 6 // userBean 7 String username = (String) session.getAttribute("username"); 8 UserBean userBean = new UserBean(); 9 userBean.setUsername(username); 10 // pageInfoBean 11 PageInfoBean pageInfoBean = new PageInfoBean(); 12 pageInfoBean.setIntPage(this.getIntPage()); 13 14 // 处理和设置 courseListBean，pageInfoBean 15 CourseListBean courseListBean = new CourseListBean(); 16 courseListBean = courseService.classShow(userBean, pageInfoBean); 17 request.setAttribute("courseListBean", courseListBean); 18 request.setAttribute("pageInfoBean", pageInfoBean); 19 20 return "Success"; 21 22 }
4.数据注入：courseListBean 和 courseBean获取
1 public CourseListBean classShow(UserBean userBean, PageInfoBean pageInfoBean) 2 throws SQLException { 3 4 // 数据库连接 5 sql = "select * from t_course where f_teacherId = (select f_userId from t_user where f_username = '" 6 + userBean.getUsername() + "')"; 7 rs = conn.executeQuery(sql);49 50 // 获取courseListBean 51 CourseListBean courseListBean = new CourseListBean(); 52 for (int i = 0; i < num; i++) {
//courseBean的获取，即courseBean的数据注入 53 CourseBean courseBean = new CourseBean(); 54 courseBean.setF_courseId(rs.getString("f_courseId")); 55 courseBean.setF_term(rs.getString("f_term")); 56 courseBean.setF_week(rs.getString("f_week")); 57 courseBean.setF_credit(rs.getString("f_credit")); 58 courseBean.setF_coursename(rs.getString("f_coursename")); 59 courseBean.setF_courseStart(rs.getString("f_courseStart")); 60 courseBean.setF_courseEnd(rs.getString("f_courseEnd")); 61 courseBean.setF_teacherId(rs.getString("f_teacherId")); 62 courseBean.setF_roomId(rs.getString("f_roomId")); 63 courseBean.setF_subjectId(rs.getString("f_subjectId")); 64 courseBean.setF_gradeId(rs.getString("f_gradeId")); 65 courseBean.setF_periodId(rs.getString("f_periodId"));
//courseListBean的获取，即courseLiseBean的数据注入 66 courseListBean.getCourseList().add(courseBean); 67 rs.next(); // 下一条记录 68 } 69 70 conn.close(); 71 return courseListBean; 72 }
5.前台展示：
1 <!-- 班级列表 --> 2 <table width="675" border="0" align="center" cellpadding="4" 3 cellspacing="1" bgcolor="#3D7BA3"> 4 <tr bgcolor="94C9E7" align="center"> 5 <td>班级ID</td> 6 <td>班级名</td> 7 <td>学期</td> 8 <td>学分</td> 9 <td>课程开始周</td> 10 <td>课程结束周</td> 11 <td>操 作</td> 12 </tr> 13 14 <s:iterator value="#request.courseListBean.courseList"> 15 <tr bgcolor="ffffff" align="center"> 16 <td><s:property value="f_courseId" /></td> 17 <td><s:property value="f_coursename" /></td> 18 <td><s:property value="f_term" /></td> 19 <td><s:property value="f_credit" /></td> 20 <td><s:property value="f_courseStart" /></td> 21 <td><s:property value="f_courseEnd" /></td> 22 <td><a href="">查看</a> <a href="">删除</a></td> 23 </tr> 24 </s:iterator> 25 </table>
