src/com/action/xuankeAction.java

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package com.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import com.dao.TKebiaoDAO;
import com.dao.TKechengDAO;
import com.dao.TLaoshiDAO;
import com.dao.TXuankeDAO;
import com.model.TKebiao;
import com.model.TLaoshi;
import com.model.TXuanke;
import com.model.TXuesheng;
import com.opensymphony.xwork2.ActionSupport;

public class xuankeAction extends ActionSupport
{
	private Integer id;
	private Integer kebiaoId;
	private Integer xueshengId;
	
	private TXuankeDAO xuankeDAO;
	private TKebiaoDAO kebiaoDAO;
	private TKechengDAO kechengDAO;
	private TLaoshiDAO laoshiDAO;
	
	public String xuankeAdd()
	{
		HttpServletRequest request=ServletActionContext.getRequest();
		HttpSession session=request.getSession();
		
		TXuesheng xuesheng=(TXuesheng)session.getAttribute("xuesheng");
		
		String s=panduan_xuanke(xuesheng.getId(), kebiaoId);
		if(s.equals("yixuan"))
		{
			request.setAttribute("msg", "选课重复");
		}
		else
		{
			TXuanke xuanke=new TXuanke();
			xuanke.setKebiaoId(kebiaoId);
			xuanke.setXueshengId(xuesheng.getId());
			xuankeDAO.save(xuanke);
			
			request.setAttribute("msg", "选课成功");
		}
		
		
		return "msg";
	}
	
	public String xuanke_mine()
	{
		HttpServletRequest request=ServletActionContext.getRequest();
		HttpSession session=request.getSession();