1. Servlet3.0 Test and Annotation used
你可以从tomcat7中lib文件夹中找到servlet-api.jar
package com.goodfan.servlet; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class FirstServlet */ @WebServlet("/FirstServlet") public class FirstServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * Default constructor. */ public FirstServlet() { System.out.println("Servlet begin>>>>>>>>"); } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.getWriter().append("Served at: ").append(request.getContextPath()); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); } }
2.浏览器测试(此时,web.xml文件都没创建)
3. 让某些程序在web工程已启动时就能运行, 可以在WebServlet注解中将loadOnStartup, urlPatterns都配上.
@WebServlet(name="/FirstServlet",urlPatterns="/firstServlet",loadOnStartup=1) public class FirstServlet extends HttpServlet {
4. 启动web
时间: 2024-11-06 03:30:03