actionlei.java

网上商店代码

package com.ata.shoping.servlet;

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

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

import com.projiect.shopping.sql.JDBC;

public class ActionLei extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public ActionLei() {
		super();
	}

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

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @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 doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(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");
		response.setCharacterEncoding("gb2312");
		PrintWriter out = response.getWriter();
		String action=request.getParameter("action");

		String id=request.getParameter("cid");
		if(action.equals("delete"))
		{
			String sql="delete from category where cid='"+id+"'";
			try
			{
				Myjdbc.delete(sql);
				out.print("<TABLE cellSpacing=0 cellPadding=0 width=\"1100\"  border=0 height=\"45\" bgcolor=\"#00ff00\"><TBODY><TR><TD background=Net008/hdr_nv_bg.gif height=30><A  href=\"str\">商品类型列表</A></TD></TR></TBODY></TABLE>");
			    out.print("删除成功");
			}catch(Exception e){}
		}
		try{
			
			ArrayList<Category> al = new ArrayList<Category>();
			al = Myjdbc.Select(" select * from category");
			Iterator<Category> it = al.iterator();
			out.print("<table width=\"800\" border=\"1\" bgcolor=\"#c0c0c0\" height=\"50\" align=\"left\"><tr><td>类型ID</td><td>类型名</td><td>类型描述</td><td>操作</td>");
			while(it.hasNext())
			{   
				Category lo = (Category)it.next();
				String productLeiActionStr = "<a href="+"\"/MyShopping/servlet/ActionLei?action=delete&cid="+ lo.getCid() + "\">删除</a>";
				out.print("<tr><td>"+lo.getCid()+"</td>");
				out.print("<td>"+lo.getCname()+"</td>");
				out.print("<td>"+lo.getDescription()+"</td>");
				out.print("<td>" + productLeiActionStr+ "</td>");
				out.print("</tr>");	
			}
			}catch(Exception e){
				e.printStackTrace();
			}
	}
	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}