tongzhuang/src/com/action/peijian_servlet.java

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package com.action;

import java.io.IOException;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.dao.DB;
import com.orm.Tleixing;
import com.orm.Tpeijian;
import com.orm.Tyonghu;
import com.service.liuService;
import com.util.Cart;

public class peijian_servlet extends HttpServlet
{ 
	public void service(HttpServletRequest req,HttpServletResponse res)throws ServletException, IOException 
	{
		String type=req.getParameter("type");
		
		if(type.endsWith("peijianList"))
		{
			peijianList(req, res);
		}
		if(type.endsWith("peijianduihuan"))
		{
			peijianduihuan(req, res);
		}
		if(type.endsWith("myduihuan"))
		{
			myduihuan(req, res);
		}
	}
	public void peijianduihuan(HttpServletRequest req,HttpServletResponse res)
	{
		int peijianID=Integer.parseInt(req.getParameter("peijianID"));
		int peijianjifen=Integer.parseInt(req.getParameter("peijianjifen"));
		HttpSession session=req.getSession();
		Tyonghu user=(Tyonghu)session.getAttribute("user");
		String yonghuID=user.getyonghuID();
		String duihuanriqi=new SimpleDateFormat("yyyy-MM-dd").format(new Date());
		String sql="insert into duihuan(peijianID,yonghuID,duihuanriqi,duihuanjifen) " +
				   "values(?,?,?,?)";
		Object[] params={peijianID,yonghuID,duihuanriqi,peijianjifen};
		
		String sql1="Update yonghu set yonghujifen=yonghujifen-? where yonghuID=?";
		Object[] params1={peijianjifen,yonghuID};
		
		DB mydb=new DB();
		mydb.doPstm(sql, params);
		mydb.doPstm(sql1, params1);