bookservlet.java

jsp+servlet网上购物,是一个实现mvc的网站

package com.ebook.servlet;

import com.ebook.Entity.User;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ebook.impl.*;
import com.ebook.Util.*;
import java.util.*;
import javax.servlet.http.HttpSession;

public class BookServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            getAllBook(request, response);
        } catch (Exception e) {
        }

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

    public void getAllBook(HttpServletRequest request, HttpServletResponse response) {
        try {
            int currentpage=1;
            if(request.getParameter("cpage")!=null)
            {
              currentpage=Integer.parseInt(request.getParameter("cpage"));
            }
            BookImpl bi = new BookImpl(new JdbcCon().getCon());
            List list = bi.getBook();
            PageHoder ph = new PageHoder(list, 5);
            List pagelist = ph.getCurrentList(currentpage);
            int allpages = ph.getPageNumber(5);
            request.setAttribute("currentpage", currentpage);
            request.setAttribute("allpages", allpages);
            request.setAttribute("pagelist", pagelist);
            CategoryImpl ci=new CategoryImpl(new JdbcCon().getCon());
            ArrayList catelist=ci.getCategory();
            request.setAttribute("catelist", catelist);


            request.getRequestDispatcher("index.jsp").forward(request, response);
        } catch (Exception e) {
        }
    }
}