sellbackselectbysid.java

是一个企业的进销存系统。账号问1001密码为123456

package com.jxc.servlet.sellback;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;

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.jxc.dao.Conn;
import com.jxc.dao.SellbackShoppingTreat;
import com.jxc.dao.SellshoppingTreat;
import com.jxc.page.ListPage;

public class SellbackSelectBySid extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public SellbackSelectBySid() {
		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 {

	this.doPost(request, response);
	}

	/**
	 * 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 {

		int pagenumber = 0;
		HttpSession session=request.getSession();
		Connection conn=Conn.getConnection();
		String dd1=request.getParameter("d1");
		String dd2=request.getParameter("d2");
		String sid=request.getParameter("sid");
		java.sql.Date d1=null;
		java.sql.Date d2=null;
		if("".equals(dd1)||"".equals(dd1)||"".equals(sid)){
			session.setAttribute("erro", "null");
			response.sendRedirect("sellbackselectbyid.jsp");
		}else{
			try {
				d1=java.sql.Date.valueOf(dd1);
				d2=java.sql.Date.valueOf(dd2);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				session.setAttribute("erro", "erro");
				response.sendRedirect("sellbackselectbyid.jsp");
				return;
			}
			if ("".equals(request.getParameter("pagenumber"))
					|| null == request.getParameter("pagenumber")) {
				pagenumber = 1;
			} else {
				pagenumber = Integer.parseInt((String) request
						.getParameter("pagenumber"));
			}
	     ArrayList list=new SellbackShoppingTreat().selectBySid(conn, sid, d1, d2);
	     if(list.size()==0){
	     session.setAttribute("list", list);
	     response.sendRedirect("sellbackselectbyid.jsp");
	     }else{
	    	 ListPage listpage = new ListPage(list, pagenumber, 15);
				int lastpagenumber = listpage.getLastPageNumber();
				if (pagenumber >= lastpagenumber) {
					pagenumber = lastpagenumber;
				}
				List list1 = (List) listpage.getThisPageElements();
				
				session.setAttribute("lastpagenumber", lastpagenumber);
				session.setAttribute("pagenumber", pagenumber);
				session.setAttribute("list", list1);
				session.setAttribute("d1", dd1);
				session.setAttribute("d2", dd2);
				session.setAttribute("sid",sid);
				response.sendRedirect("sellbackselectbyid.jsp");
	    	 
	     }
	     
		}
		
	}

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

}