itemclass.java

一套购物车项目。电子商务系统。实现了前台和后台的业务逻辑。

package com.softfz.jn0708.servlet;

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.softfz.jn0708.dao.ClassDAO;
/**
 * 构建类别树的servlet
 * @author student
 *
 */

public class ItemClass extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = -5477386900650661021L;

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

	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("GBK");
		response.setCharacterEncoding("GBK");
		String task = request.getParameter("task");			
		if(task==null){			
			buildClassTree(request,response);			
		}
	}		


	/**
	 * 构建类别树
	 * @param request
	 * @param response
	 * @throws ServletException
	 * @throws IOException
	 */
	private void buildClassTree(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
				
		ClassDAO classdao = new ClassDAO();
		List bClasslist = classdao.getBclass();
		List nClasslist = classdao.getNclass();
		request.setAttribute("bclasslist",bClasslist);
		request.setAttribute("nclasslist",nClasslist);
		request.getRequestDispatcher("/shop/left.jsp").forward(request,response);
	}	
	
}