regcourseaction.java

学校的课程管理及选课系统

package org.wangsong.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.wangsong.dao.DAOFactory;
import org.wangsong.dao.EnrolDAO;
import org.wangsong.service.UserExistJudgedService;

public class RegCourseAction extends Action
{
	private EnrolDAO enrolDao;

	public EnrolDAO getClassesDAO()
	{
		return DAOFactory.getInstance().createEnrolDAO();
	}

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception
	{

		enrolDao = this.getClassesDAO();
		String stuid = (String) request.getParameter("id");
		String classid = (String) request.getParameter("classid");
		UserExistJudgedService uej = new UserExistJudgedService();
		ActionMessage message=null;
		ActionMessages messages=null;
        
		 if(uej.enrolExist(classid, stuid) )
		 {
				message=new ActionMessage("学生成绩单已经存在，注册已完成！！！",false);
				messages=new ActionMessages();
				messages.add("addenrol",message);
				saveErrors(request,messages);

			 return (mapping.getInputForward());
		 }
	
		
	 	if(enrolDao.addEnrol(stuid, classid))
			{
				message=new ActionMessage("课程注册成功，请继续操作！！！",false);
				messages=new ActionMessages();
				messages.add("addenrol",message);
				saveErrors(request,messages);

				
				return (mapping.findForward("success"));
			}
		  
		return (mapping.getInputForward());
	}
}