welfareservlet.java

该源代码实现了系统的进货

package EnterServlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.Date;
import java.io.*;

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 operation.WelfareOperation;
import dataBase.DataBase;

public class WelfareServlet extends HttpServlet {
	public final static String jdkDateFormat="yyyy-MM-dd";

	/**
	 * Constructor of the object.
	 */
	public WelfareServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
        
		request.setCharacterEncoding("GB2312");
		response.setContentType("text/html;charset=gb2312");
		PrintWriter out=response.getWriter();
		WelfareOperation wo=new WelfareOperation();
		
		//得到系统时间
		Date date=new Date();
		java.sql.Date sqldate = null;
		SimpleDateFormat dateFormat=new SimpleDateFormat(jdkDateFormat);
		try
		{
			 sqldate=new java.sql.Date(date.getTime());
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		
		if(request.getParameter("WelfareQuantity")!="")
		{
		String WelfareID=wo.getWelfareID();
		String  ProductName=request.getParameter("ProductName");                                  //得到商品名称
		int    WelfareQuantity = Integer.parseInt(request.getParameter("WelfareQuantity"));       //得到福利数量
		String WelfareNotice=request.getParameter("WelfareNotice");                               //得到销售单备注
		HttpSession session=request.getSession();
		String Chargeman=(String)session.getAttribute("userID");                                  //得到经手人       
		java.sql.Date WelfareDate=sqldate;                                                        //得到销售日期
		
        //应付单据相关信息
		
		int ProductID=wo.getProductID(ProductName);                                               //得到商品编号
	
		
		
		if(wo.checkStock(ProductID, WelfareQuantity))
		{
			int ProductQuantity=wo.getProductQuantity(ProductID);                                 //得到库存
			
			ArrayList list=wo.getEnterList(ProductQuantity, ProductID, WelfareQuantity);          //得到销售对应的进货单编号
			wo.WelfareInsert(WelfareID, ProductID, WelfareQuantity, WelfareNotice, WelfareDate, Chargeman,list);
			out.println("<script> alert('福利发放成功！');window.location.href='Welfare.jsp';</script>");
		}
		else
		{
			out.println("<script> alert('库存不足量！');window.location.href='Welfare.jsp';</script>");
		}
		wo.Close();
		}
		else
		{
			out.println("<script> alert('商品数目不能为空');window.location.href='Welfare.jsp';</script>");
		}
	
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}