adfirstresultaction.java

这是一个可以让学生选择自己喜欢的课题

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

import java.util.ArrayList;
import java.util.Iterator;
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.ActionErrors;
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 allBeans.FirstStudentTittle;
import allBeans.FstBean;
import allBeans.LstBean;
import allBeans.Students;
import allBeans.Tittles;
import allDAOFactory.IFirstStudentTittleDAO;
import allDAOFactory.IStudentDAO;
import allDAOFactory.ITittleDAO;

import com.yourcompany.struts.form.AdfirstresultForm;

/** 
 * MyEclipse Struts
 * Creation date: 07-22-2008
 * 
 * XDoclet definition:
 * @struts.action path="/adfirstresult" name="adfirstresultForm" input="/Administrators/adfirstresult.jsp" scope="request" validate="true"
 */
public class AdfirstresultAction 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) {
		AdfirstresultForm adfirstresultForm = (AdfirstresultForm) form;// TODO Auto-generated method stub
		
		String fi_stid=adfirstresultForm.getFi_stid();
		Integer fi_tiid=adfirstresultForm.getFi_tiid();
		
		ActionErrors errors=new ActionErrors();
		
		IFirstStudentTittleDAO fstdao=new IFirstStudentTittleDAO();
		FirstStudentTittle fst=new FirstStudentTittle();
		IStudentDAO stdao=new IStudentDAO();
		Students student=new Students();
		ITittleDAO tidao=new ITittleDAO();
		Tittles tittle=new Tittles();		
		
		boolean b_error=false;
		
		if(fi_stid==null || fi_stid.equals("")) //输入的学生学号不能为空
		{
			errors.add("la_stid",new ActionMessage("adlst.la_stid.wrong"));
			b_error=true;
		}
		if( fi_tiid==null || fi_tiid.equals("")) //输入的题目编号不能为空
	    {
		   errors.add("la_tiid",new ActionMessage("adlst.la_tiid.wrong"));
		   b_error=true;
		}
		student=stdao.stget(fi_stid);
		if(student==null)         //学生学号应该在学生表中已经存在，否则错误
		{
		   errors.add("adadminisadid",new ActionMessage("adadmin.isadid.wrong"));
		   b_error=true;
		}
		
//		学生学号不应该在最后选定表中出现3次以上，否则不能添加这个学生的关系
	    List list=fstdao.fstget(fi_stid); 
	    int nStTime=list.size();
		if(nStTime>2)          
		{
		   errors.add("adadminisadid",new ActionMessage("adadmin.isadid.wrong"));
		   b_error=true;
		}
		
//		题目编号应该已经在题目表中存在，否则错误
		tittle=tidao.tiget(fi_tiid);
		if(tittle==null)           
		{
		   errors.add("adadminisadid",new ActionMessage("adadmin.isadid.wrong"));
		   b_error=true;
		}
		
//		题目编号不应该在最后选定表中出现3次以上，否则不能添加这个题目的关系
	    list=fstdao.fstgetbytiid(fi_tiid);
	    int nTiTime=list.size();
	    if(nTiTime>2)
	    {
			errors.add("adadminisadid",new ActionMessage("adadmin.isadid.wrong"));
			b_error=true;
	    }

//	    添加的这个关系不能重复   
	    fst=fstdao.fstgetbystandti(fi_stid, fi_tiid);
	    if(fst!=null)
	    {
			errors.add("adadminisadid",new ActionMessage("adadmin.isadid.wrong"));
			b_error=true;
	    }

		if(!b_error)
		{
			fst=new FirstStudentTittle();
			int ntemp=nStTime+1;
			fst.setFiPrior(String.valueOf(ntemp));
			fst.setFiStid(fi_stid);
			fst.setFiTiid(fi_tiid);
			fst.setFiWord("暂空");

			fstdao.fstsave(fst);
			
			//使学生的选题数目加1
			student=stdao.stget(fi_stid);
			student.setStTisum(nStTime+1);
			stdao.stupdate(student);
			
			//使题目的被选人数加1 
			tittle=tidao.tiget(fi_tiid);
			tittle.setTiStsum(nTiTime+1);
			tidao.tiupdate(tittle);
			
			adfirstresultForm.setFi_stid("");
			adfirstresultForm.setFi_tiid(null);
		}
		else
			this.saveErrors(request, errors);
		
        fstdao=new IFirstStudentTittleDAO();
		list=fstdao.fstget();
		List lastlist=new ArrayList();
		FstBean temp=null;
		Iterator it=list.iterator();
		while(it.hasNext())
		{
			temp=new FstBean();
			Object[] result=(Object[])it.next();
			temp.setFiid(result[0].toString());
			temp.setStid(result[1].toString());
			temp.setStname(result[2].toString());
			temp.setTiid(result[3].toString());
			temp.setTiname(result[4].toString());
			lastlist.add(temp);
			
		}
		request.setAttribute("fstlist", lastlist);
		return mapping.findForward("toadfirstresult");
	}
}