📄 catlistservlet.java

📁 网上书店源代码和数据库网上书店源代码和数据库
💻 JAVA
字号:
package com.shop.controller;

import java.io.IOException;
import java.io.PrintWriter;
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.shop.model.dao.addbook.BookdbDAO;
import com.shop.vo.addbook.BookInfoVo;


public class CatListServlet extends HttpServlet {

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

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

		
			BookInfoVo book=new BookInfoVo();
			String id=request.getParameter("id");
			int val=Integer.parseInt(request.getParameter("buyCount"));
			System.out.println("我买的书是：^^^^^^^^^^"+id);
			System.out.println("我买的书数量是:"+val);
			
			Cat cat=null;
			if(request.getSession().getAttribute("cat")==null){
			 cat=new Cat();
			
			}else{
				 cat=(Cat)request.getSession().getAttribute("cat");
				
			}
			cat.addBooks(id,val);
			BookdbDAO bookdbdao=new BookdbDAO();
			bookdbdao.updateDB(id,val);
	        mapReturn mapreturn=new mapReturn(); 
		    List<BookInfoVo> bookList=mapreturn.findBook(cat.getBook());
		    request.getSession().setAttribute("cat", cat);
		    request.getSession().setAttribute("bookList", bookList);
			
			request.getRequestDispatcher("/bookcat/catList.jsp").forward(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 {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

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

}
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -