jsp_project_/store/src/DelOrder

最新推荐文章于 2022-10-29 11:11:37 发布

goushaoping04

最新推荐文章于 2022-10-29 11:11:37 发布

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CC 4.0 BY-SA版权

文章标签： jsp import initialization server equals constructor

本文链接：https://blog.youkuaiyun.com/goushaoping04/article/details/1643491

本文介绍了一个用于删除订单的Servlet实现示例。该Servlet通过HTTP GET请求接收订单ID参数，并使用ConnectionDatabase类执行数据库操作来删除指定订单。完成删除操作后，用户将被重定向到Order.jsp页面。

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import java.io.IOException;
import java.io.PrintWriter;

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

import conn.ConnectionDatabase;

public class DelOrder extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = 1L;

/**
* Constructor of the object.
*/
public DelOrder() {
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 {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  String strOrderID = request.getParameter("orderID");
  ConnectionDatabase con = new ConnectionDatabase();
  con.updateBase("delete CustomerOrder where orderID='"+strOrderID+"'");
  response.sendRedirect("Order.jsp");
  out.flush();
  out.close();
}

/**
* 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
}

}