Java Web项目开发案例精粹17-学生信息管理系统

package com.sanqing.course.action; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Set; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import com.sanqing.course.dao.CourseDAO; import com.sanqing.course.dao.CourseScheduleDAO; import com.sanqing.course.dao.MarkDAO; import com.sanqing.course.dao.StudentDAO; import com.sanqing.course.dao.TeamDAO; import com.sanqing.course.form.MarkForm; import com.sanqing.course.model.Course; import com.sanqing.course.model.Mark; import com.sanqing.course.model.Student; import com.sanqing.course.model.Team; import com.sanqing.course.util.PageModel; public class MarkAction extends BaseDispatchAction { private MarkDAO markDao; private CourseDAO courseDao; private StudentDAO studentDao; private TeamDAO teamDao; private CourseScheduleDAO courseScheduleDao; /** * @param courseScheduleDao the courseScheduleDao to set */ public void setCourseScheduleDao(CourseScheduleDAO courseScheduleDao) { this.courseScheduleDao = courseScheduleDao; } /** * @param markDao the markDao to set */ public void setMarkDao(MarkDAO markDao) { this.markDao = markDao; } /** * @param teamDao the teamDao to set */ public void setTeamDao(TeamDAO teamDao) { this.teamDao = teamDao; } /** * @param courseDao the courseDao to set */ public void setCourseDao(CourseDAO courseDao) { this.courseDao = courseDao; } /** * @param studentDao the studentDao to set */ public void setStudentDao(StudentDAO studentDao) { this.studentDao = studentDao; } /** * 动态检索成绩 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ @SuppressWarnings("unchecked") public ActionForward list(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //获取从页面表单中提交过来的值 MarkForm mf = (MarkForm)form; Mark mark = new Mark(); String flag = request.getParameter("flag"); String teamId = request.getParameter("teamId"); Team team = null; PageModel pageModel = new PageModel(); if("true".equals(flag)) { if(mf != null) { if(mf.getCourseId() != null && mf.getCourseId().trim().length() > 0) { Course course = courseDao.findCourseById(mf.getCourseId()); mark.setCourse(course); } if(mf.getStudentId() != null && mf.getStudentId().trim().length() > 0) { Student student = studentDao.findStudentById(mf.getStudentId()); mark.setStudent(student); } BeanUtils.copyProperties(mark, form); request.getSession().setAttribute("markMar", mark); } else { request.getSession().setAttribute("markMar", null); } if(null != teamId && teamId.trim().length() > 0) { team = teamDao.findTeamById(teamId); request.getSession().setAttribute("teamMark", team); } else { request.getSession().setAttribute("teamMark", null); } } else { mark = (Mark) request.getSession().getAttribute("markMar"); team = (Team)request.getSession().getAttribute("teamMark"); } //调用业务逻辑操作 pageModel = markDao.listMark(mf.getPageNo(), mark, team); //将查询结果放到request中 request.setAttribute("pageModel", pageModel); return mapping.findForward("list"); } /** * 检索所有的成绩 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward findAll(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { List<Mark> list = markDao.findAllMarks(); request.setAttribute("marks", list); return mapping.findForward("list"); } /** * 删除成绩 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward delete(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //获取从页面表单中提交过来的值 MarkForm mf = (MarkForm)form; //调用业务逻辑操作 markDao.deleteMark(mf.getSelectFlag()); saveMessage(request, "markForm.deleted"); ActionForward af = new ActionForward("mark.do?p=list&pageNo=1", true); return af; } /** * 编辑成绩:进入新建页面,进入更新页面 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ public ActionForward edit(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String id = request.getParameter("id"); if(id != null && id.trim().length() > 0) { Mark mark = markDao.findMarkById(id); //将Mark的值复制给form if(mark != null) { request.setAttribute("mark", mark); } } return mapping.findForward("edit"); } /** * 保存成绩:更新,创建 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ @SuppressWarnings({ "deprecation", "unchecked" }) public ActionForward save(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { List<Mark> marks = (List<Mark>)request.getSession().getAttribute("marks"); for(int i=0; i<marks.size(); i++) { Mark mark = marks.get(i); markDao.addMark(mark); } saveMessage(request, "markForm.added"); request.getSession().removeAttribute("marks"); ActionForward af = new ActionForward("courseSchedule.do?p=input&flag=added", true); return af; } /** * 获取用户输入信息,组装成绩,转发到确认成绩页面 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ @SuppressWarnings("deprecation") public ActionForward confirm(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String num = request.getParameter("num"); int total = Integer.valueOf(num); List<Mark> marks = new ArrayList<Mark>(); String courseId = request.getParameter("courseId"); Course course = courseDao.findCourseById(courseId); try { for(int i=1; i<=total; i++) { String studentId = request.getParameter("studentId"+i); Float score = Float.valueOf(request.getParameter("score"+i)); Student student = studentDao.findStudentById(studentId); Mark mark = new Mark(); mark.setStudent(student); mark.setCourse(course); mark.setScore(score); marks.add(mark); } } catch(Exception e) { e.printStackTrace(); saveMessage(request, "markForm.added.error"); ActionForward af = new ActionForward("courseSchedule.do?p=input", true); return af; } request.getSession().setAttribute("marks", marks); return mapping.findForward("confirm"); } /** * 修改成绩:更新,创建 * @param mapping * @param form * @param request * @param response * @return * @throws Exception */ @SuppressWarnings({ "deprecation", "unchecked" }) public ActionForward modify(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { MarkForm markForm = (MarkForm) form; Mark mark = markDao.findMarkById(markForm.getId()); mark.setScore(Float.valueOf(markForm.getScore())); markDao.modifyMark(mark); saveMessage(request, "markForm.updated"); ActionForward af = new ActionForward("mark.d