bodyservlet.java

一个小型的JSP购物网站

package com.gc.biz;

import java.io.IOException;
import java.util.List;

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

import com.gc.action.PagesBean;
import com.gc.action.Products;
import com.gc.action.SmallCategory;
import com.gc.dao.DProducts;
import com.gc.dao.DSmallCategory;

public class BodyServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");

		DProducts dp = new DProducts();
		DSmallCategory ds = new DSmallCategory();
		PagesBean pages = new PagesBean();
		String isMan = request.getParameter("manager_up");
		//设置最总共有多少数据
		pages.setMaxCount(dp.GetDataCount());
		//设置有多少页
		pages.setMaxPage(pages.getMaxCount()%pages.getPageCount()==0?
		pages.getMaxCount()/pages.getPageCount():pages.getMaxCount()/pages.getPageCount()+1 );
		if(request.getParameter("page")!=null)
		{
			int currentpage = Integer.parseInt(request.getParameter("page"));

			if(currentpage<=1)
			{
				currentpage=1;
			}else if(currentpage>=pages.getMaxPage())
			{
				currentpage=pages.getMaxPage();
			}
			pages.setCurrentIndex(currentpage);	
		}
		List<Products> list = dp.GetProductsData(pages);
		List<SmallCategory> li = ds.selectAllSmallCategory();
		request.setAttribute("smallca", li);
		request.getSession().setAttribute("pro", pages);	
		request.setAttribute("Products", list);

		if(!"".equals(isMan) && isMan!=null){
			request.getRequestDispatcher("/MainBody.jsp?manager=true").forward(request, response);
		}else{
			request.getRequestDispatcher("/MainBody.jsp").forward(request, response);
		}
	}
}