diff --git a/Java/LoginService.java b/Java/LoginService.java
new file mode 100644
index 0000000000000000000000000000000000000000..8c67d8cf2b84e7401da2b75c4059fe495d35274d
--- /dev/null
+++ b/Java/LoginService.java
@@ -0,0 +1,13 @@
+    public boolean logout(String account, String token) {
+        boolean login = isLogin(token);
+        if (!login) {
+            throw new IllegalstateException("当前用户被禁用或已下线！");
+            try {
+            } catch (Exception e) {
+                log.error("用户登出失败！用户账号：{}",
+                        account, e);
+                throw new IllegalstateException("用户退出失败！用户账号：" + account);
+            }
+            return true;
+        }
+    }
\ No newline at end of file