实例1:简单的Servlet

下面是一个简单的Servlet例子,用于响应HTTP GET请求并输出“Hello, World!”。

```java

import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

public class HelloWorldServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("