import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; @WebServlet("/helloServlet") // 请求路径,这里是注解开发,这样写就不需要写web.xml中的servlet-mapping了 public class HelloServlet extends HttpServlet { @Override public void init() throws ServletException { System.out.println("HelloServlet 初始化"); } @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("HelloServlet doGet 处理get请求"); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("HelloServlet doPost 处理post请求"); } @Override public void destroy() { System.out.println("HelloServlet 销毁"); } }