diff --git a/src/com/hellogithub/servlet/DeleteCookie.java b/src/com/hellogithub/servlet/DeleteCookie.java
deleted file mode 100644
index 39bcf82..0000000
--- a/src/com/hellogithub/servlet/DeleteCookie.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package com.hellogithub.servlet;
-
-import jakarta.servlet.ServletException;
-import jakarta.servlet.annotation.WebServlet;
-import jakarta.servlet.http.Cookie;
-import jakarta.servlet.http.HttpServlet;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-
-import java.io.IOException;
-
-@WebServlet("/deletecookie")
-public class DeleteCookie extends HttpServlet {
-    @Override
-    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-        doPost(req,resp);
-    }
-
-    @Override
-    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-        /*
-*/
-// 获取cookie数组
-        Cookie[] cookies = req.getCookies();
-// 判断数组对象是否为null
-        if (cookies != null) {
-            // 遍历cookie数组
-            for(Cookie cookie : cookies) {
-                // 获取cookie的name属性值
-                String cName = req.getParameter("username");
-                // 通过name属性值,获取要删除的特定cookie
-                if ("username".equals(cName)) {
-                    // 找到了要删除的特定cookie,cName为要删除特定cookie的name属性值
-            /*
-              新建一个cookie对象
-               其name属性值和要删除的特定的cookie的name属性值完全相同
-               其value属性值可以为任意值或null
-            */
-                    Cookie nc = new Cookie(cName,null);
-
-//               设置新建cookie的有效时间,由于要删除特定的cookie所以设置为0
-
-                    nc.setMaxAge(0);
-            /*
-               设置新建cookie的path
-               注意:新建cookie的path和要删除的特定cookie的path一定要相同
-              否则无法删除
-            */
-                    nc.setPath(req.getContextPath());
-            /*
-               将新建的cookie响应给浏览器即删除特定的cookie
-            */
-                    resp.addCookie(nc);
-                }
-            }
-        }
-    }
-}
diff --git a/src/com/hellogithub/servlet/DeleteSession.java b/src/com/hellogithub/servlet/DeleteSession.java
new file mode 100644
index 0000000..93fb8a0
--- /dev/null
+++ b/src/com/hellogithub/servlet/DeleteSession.java
@@ -0,0 +1,19 @@
+package com.hellogithub.servlet;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+
+import java.io.IOException;
+import java.net.http.HttpClient;
+@WebServlet("/deletesession")
+public class DeleteSession extends HttpServlet{
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        HttpSession session = req.getSession();
+        session.invalidate();
+    }
+}