sttittlelistaction.java

来自「这是一个可以让学生选择自己喜欢的课题」· Java 代码 · 共 195 行

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.struts.action;

import java.util.List;

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 com.yourcompany.struts.form.SttittlelistForm;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMessage;

import allBeans.StZhiyuan;
import allBeans.Teachers;
import allBeans.Tittles;
import allBeans.Students;
import allBeans.FirstStudentTittle;
import allBeans.LastStudentTittle;
import allDAOFactory.ITeacherDAO;
import allDAOFactory.ITittleDAO;
import allDAOFactory.IStudentDAO;
import allDAOFactory.IFirstStudentTittleDAO;
import allDAOFactory.ILastStudentTittleDAO;
/** 
 * MyEclipse Struts
 * Creation date: 07-30-2008
 * 
 * XDoclet definition:
 * @struts.action path="/sttittlelist" name="sttittlelistForm" input="/Students/sttittlelist.jsp" scope="request" validate="true"
 */
public class SttittlelistAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		SttittlelistForm sttittlelistForm = (SttittlelistForm) form;// TODO Auto-generated method stub

		String stid=(String)request.getSession().getAttribute("userID"); //得到学生的ID
		if(stid==null)
			return mapping.findForward("tologinst");
		
		String stiid=sttittlelistForm.getSt_tiid();
		String word=sttittlelistForm.getSt_word();
		String tm=(String)request.getSession().getAttribute("tm");
		String thid=(String)request.getSession().getAttribute("thidinsession");
		
		boolean b_error=false;
		ActionErrors errors=new ActionErrors();
		if(stiid==null || stiid.equals(""))
		{
			b_error=true;
			errors.add("st_tiid",new ActionMessage("sttittlelist.tiid.wrong"));
		}
		Integer tiid=0;
		if(!b_error)
			tiid=Integer.parseInt(stiid);
		
		if(word==null || word.equals(""))
		{
			word="无";
		}
		ITittleDAO tidao=new ITittleDAO();
		Tittles tittle=tidao.tiget(tiid);
		if(tittle==null)
			b_error=true;
		if(!b_error && !tittle.getTiThid().equals(thid))
		{
			b_error=true;
			errors.add("st_thid",new ActionMessage("sttittlelist.thid.wrong"));			
		}
		if(!b_error && tm.equals("1") && tittle.getTiStsum()>2)  
		{
			b_error=true;
			errors.add("st_thid",new ActionMessage("sttittlelist.thid.wrong"));	
		}
		if(!b_error && tm.equals("2") && tittle.getTiStsum()>0)  
		{
			b_error=true;
			errors.add("st_thid",new ActionMessage("sttittlelist.thid.wrong"));	
		}
		if(!b_error)
		{
			if(tm.equals("1")) //处于第一阶段选题时期
			{
				String prior=(String)request.getSession().getAttribute("priorinsession");

				//将这个选题关系记录插入到预选表中
				IFirstStudentTittleDAO fstdao=new IFirstStudentTittleDAO();
				FirstStudentTittle fst=new FirstStudentTittle();
				fst.setFiPrior(prior);
				fst.setFiStid(stid);
				fst.setFiTiid(tiid);
				fst.setFiWord(word);
				fstdao.fstsave(fst);
				//将此学生的选题数目加1
				IStudentDAO stdao=new IStudentDAO();
				Students st=stdao.stget(stid);
				st.setStTisum(st.getStTisum()+1);
				stdao.stupdate(st);
				//将此题目的被选人数加1
				tidao=new ITittleDAO();
				Tittles ti=tidao.tiget(tiid);
				ti.setTiStsum(ti.getTiStsum()+1);
				tidao.tiupdate(ti);
				//将 Session 中的 priorinsession 和 thidinsession 清除
				request.getSession().removeAttribute("priorinsession");
				request.getSession().removeAttribute("thidinsession");
				//回到stfirstmain界面 
			    fstdao=new IFirstStudentTittleDAO();
				StZhiyuan stzhiyuanone=fstdao.fstget(stid,"1");
				StZhiyuan stzhiyuantwo=fstdao.fstget(stid,"2");
				StZhiyuan stzhiyuanthree=fstdao.fstget(stid,"3");
				request.setAttribute("stzhiyuanone", stzhiyuanone);
				request.setAttribute("stzhiyuantwo", stzhiyuantwo);
				request.setAttribute("stzhiyuanthree", stzhiyuanthree);
				return mapping.findForward("tostfirstmain");
			}
			else if(tm.equals("2"))  //处于第二阶段选题时期
			{
			  //将此学生的选题数目置1
				IStudentDAO stdao=new IStudentDAO();
				Students st=stdao.stget(stid);
				st.setStTisum(1);
				stdao.stupdate(st);
			  //将此题目的被选人数置1
				tidao=new ITittleDAO();
				Tittles ti=tidao.tiget(tiid);
				ti.setTiStsum(1);
				tidao.tiupdate(ti);
              //将这个选题关系记录插入到最后选定表中
				ILastStudentTittleDAO lstdao=new ILastStudentTittleDAO();
				LastStudentTittle lst=new LastStudentTittle();
				lst.setLaPrior("4");
				lst.setLaStid(stid);
				lst.setLaThid(tiid);
				lst.setLaWord(word);
				lstdao.lstsave(lst);
				
              //将 Session 中的thidinsession 清除
				request.getSession().removeAttribute("thidinsession");
              //回到stsecondmain界面 
			    lstdao=new ILastStudentTittleDAO();
				StZhiyuan stzhiyuan=lstdao.lstgetzhiyuan(stid);
				request.setAttribute("stzhiyuan", stzhiyuan);
				if(stzhiyuan==null)
				{
					request.setAttribute("prior", "4");
				}
				else
				{
					tidao=new ITittleDAO();
					String timemo=tidao.tiget(stzhiyuan.getTiid()).getTiMemo();
					request.setAttribute("timemo", timemo);
					request.setAttribute("prior", stzhiyuan.getPrior());
				}
				return mapping.findForward("tostsecondmain");
			}
			else
			{
				request.removeAttribute("userID");
				request.removeAttribute("st_name");
				request.removeAttribute("tm");
				return mapping.findForward("tologinst");
			}
		}
		else
		{
			ITeacherDAO thdao=new ITeacherDAO();
			Teachers teacher=thdao.thget(thid);
			request.setAttribute("thname", teacher.getThName()); //根据老师的ID得到老师的名字
			
			tidao=new ITittleDAO();
			List list=tidao.tigetbythid(thid);
			request.setAttribute("tilist", list);   //根据老师的ID得到这个老师的所有题目列表
			
			return mapping.findForward("tosttittlelist");
		}
	}
}