以下是一个简单的例子，展示了如何通过Servlet将数据输出到JSP实例：

1. 创建一个名为`DataServlet`的Servlet类，该类继承自`HttpServlet`类。

```java

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class DataServlet extends HttpServlet {

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// 设置响应内容类型

response.setContentType("