courseaction.java

采用STRUTS+HIBERNATE做的一个学生成绩管理系统.用的ORACLE9I数据库.

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package org.yangyang.action;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;
import org.yangyang.bean.Course;
import org.yangyang.bean.Student;
import org.yangyang.common.util.CodeConstant;
import org.yangyang.dao.CourseDao;
import org.yangyang.dao.DictionaryDao;
import org.yangyang.dao.StudentDao;

/** 
 * MyEclipse Struts
 * Creation date: 03-24-2008
 * 
 * XDoclet definition:
 * @struts.action path="/course" name="mainForm" scope="request" validate="true"
 */
public class CourseAction extends DispatchAction {

	// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method init 用于初始化课程信息,显示课程的信息
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward init(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		//得到FORM
		DynaActionForm mainForm = (DynaActionForm) form;
		//得到课程信息
		showPage(request);
		//进行跳转
		return mapping.findForward(CodeConstant.SHOW_COURSE);
	}
	
	/** 
	 * Method showPage 得到课程信息,并进行初始化
	 * @param request
	 */
	protected void showPage(HttpServletRequest request){
		//保存页数
		List<Integer> pageList = new ArrayList();
		//保存结果
		List<Course> resultList = new ArrayList();
		//页数
		int page = 1;
		//得到页数
		if(request.getParameter(CodeConstant.PAGE_NUM) != null){
			page = new Integer(request.getParameter(CodeConstant.PAGE_NUM));
		}
		CourseDao courseDao = new CourseDao();
		//得到页面数量
		int pageNum = courseDao.getPage(CodeConstant.PAGE_COUNT,Student.class);
		//判断是否有数据
		if(pageNum > 0){
			for(int n = 1;n <= pageNum;n ++){
				pageList.add(n - 1,n);
			}
			//返回页面数量
			request.setAttribute(CodeConstant.PAGE_NUM,pageList);
			//得到结果
			resultList = courseDao.showCourse(page,CodeConstant.PAGE_COUNT);
			//返回结果
			request.setAttribute(CodeConstant.COURSE_LIST,resultList);
		}
	}
	
	/** 
	 * Method addCourse 增加课程
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward addCourse(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		//得到FORM
		DynaActionForm mainForm = (DynaActionForm) form;
		//构造一个课程对象
		Course cou = new Course();
		cou.setId((String)mainForm.get("id"));
		cou.setName((String)mainForm.get("name"));
		cou.setBookname((String)mainForm.get("bookname"));
		cou.setKnowledge((String)mainForm.get("speciality"));
		
		CourseDao stuDao = new CourseDao();
		//调用DAO进行课程的增加
		stuDao.addOrupadate(cou);
		//提示信息
		request.setAttribute(CodeConstant.MESSAGE,CodeConstant.ADD_SUCCESS);
		//得到课程信息
		showPage(request);
		//进行跳转
		return mapping.findForward(CodeConstant.SHOW_COURSE);
	}
	
	/** 
	 * Method delCourse 删除课程
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward delCourse(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		//得到要删除课程的编号
		String id = request.getParameter("stuid");
		CourseDao courseDao = new CourseDao();
		//进行删除
		courseDao.del(id,CodeConstant.COURSE);
		//提示信息
		request.setAttribute(CodeConstant.MESSAGE,CodeConstant.DEL_SUCCESS);
		//得到课程信息
		showPage(request);
		//进行跳转
		return mapping.findForward(CodeConstant.SHOW_COURSE);
	}
	
	/** 
	 * Method updateCourse 跳转到修改课程页面
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward updateCourse(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		//得到要修改课程的编号
		String id = request.getParameter("stuid");
		CourseDao courseDao = new CourseDao();
		//查找学课程
		Course cou = courseDao.getCoursebyId(id);
		request.setAttribute(CodeConstant.UPDATE_STUDENT_LIST,cou);
		DictionaryDao dicDao = new DictionaryDao();
	    //得到所有专业信息
		request.setAttribute(CodeConstant.DICTIONARY_LIST,dicDao.getName(CodeConstant.KINDID,"1"));
		//进行跳转
		return mapping.findForward(CodeConstant.UPDATE_STUDENT);
	}

	/** 
	 * Method updateStudent 修改课程
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward updateCoursetAfter(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		//得到FORM
		DynaActionForm mainForm = (DynaActionForm) form;
		//构造一个课程对象
		Course cou = new Course();
		cou.setId((String)mainForm.get("id"));
		cou.setName((String)mainForm.get("name"));
		cou.setBookname((String)mainForm.get("bookname"));
		cou.setKnowledge((String)mainForm.get("speciality"));
		cou.setUpdatedate(new java.util.Date());
		CourseDao courseDao = new CourseDao();
		courseDao.addOrupadate(cou);
		//提示信息
		request.setAttribute(CodeConstant.MESSAGE,CodeConstant.UPDATE_SUCCESS);
		//得到课程信息
		showPage(request);
		//进行跳转
		return mapping.findForward(CodeConstant.SHOW_COURSE);
	}
	
}