【Servlet入门】HelloServlet 小例子

1. 在eclipe中开发如下HelloServlet（注先引入jsp-api.jar, servlet-api.jar，它们可以从tomcat安装目录下找到. e.g: D: omcat-6.0.35lib下找到）:

 1 package com.annie;
 2 
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 
 6 import javax.servlet.ServletException;
 7 import javax.servlet.http.HttpServlet;
 8 import javax.servlet.http.HttpServletRequest;
 9 import javax.servlet.http.HttpServletResponse;
10 
11 
12 public class HelloServlet extends HttpServlet {
13     public void service(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{
14         PrintWriter out = response.getWriter();
15         out.println("<html>");
16         out.println("<font size=30 color=red>www.hello.org</font><br>");
17         out.println("<marquee>" + new java.util.Date() + "<marquee>");
18         out.println("<html>");
19     }
20 }

View Code

将代码进行clean up ， build.
2. 部署Servlet代码至tomcat中，找到tomcatat所在的目录，e.g： D: omcat-6.0.35webapps，新建子目录结构如下：HelloServletWEB-INFclassesservlet代码包结构，将HelloServelt.class从eclipse下project目录移动至 D: omcat-6.0.35webappsHelloServletWEB-INFclassescomannie

3. 新建 D: omcat-6.0.35webappsHelloServletWEB-INweb.xml，并注册HelloServlet，信息如下：

4.启动tomcat，观察当前tomcat服务器所占端口：

5. 打开浏览器，输入 http://localhost:8080/HelloServlet/annie , 验证页面内容: