src/t/o/servlet/foodchange.java

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package t.o.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.jms.Session;
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 org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;

import t.o.bean.DBfood;
import t.o.bean.foodBean;

public class foodchange extends HttpServlet {
	
	private int allrow = 0;//行数
	private int yerow = 10;//每页行数
	private int yeshu = 0;//页数
	private int lastyerow = 0;//最后一页的行数
	private int showpage = 1;//当前页
	private String sql = null;
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		PrintWriter out = response.getWriter();
		HttpSession session = request.getSession();
		
		if(session.getAttribute("adminName")==null){
			response.getWriter().write("<script language='JavaScript'>" +
					"window.open('admin/login.jsp',target='_top');" + 
					"</script>"
					);
			}
		if(request.getParameter("ToPage")==null){	
			sql = "select * from t_o_Food";
			showpage = 1;
		}
		if(request.getParameter("foodsearch")!=null){
			String food_type = request.getParameter("foodtype");
			String food= new String(request.getParameter("foodsearch").toString().getBytes("iso-8859-1"),"utf-8");
			if(food_type.equals("food_name")){
				sql = "select * from t_o_Food where o_foodName like '%"+food+"%'";
				showpage = 1;
			}
			if(food_type.equals("food_no")){
				sql = "select * from t_o_Food where o_foodNo like '%"+food+"%'";
				showpage = 1;