以下是一个简单的邮箱激活功能的Servlet和JSP实例:
1. 创建Servlet(EmailActivationServlet.java):

```java
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;
@WebServlet("







