diff --git a/web-service/src/main/java/cn/qaiu/lz/web/controller/PlaygroundApi.java b/web-service/src/main/java/cn/qaiu/lz/web/controller/PlaygroundApi.java
index fb54307..09ae694 100644
--- a/web-service/src/main/java/cn/qaiu/lz/web/controller/PlaygroundApi.java
+++ b/web-service/src/main/java/cn/qaiu/lz/web/controller/PlaygroundApi.java
@@ -28,7 +28,6 @@ import java.io.BufferedReader;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
-import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.util.ArrayList;
 import java.util.List;
@@ -696,19 +695,5 @@ public class PlaygroundApi {
         }
         return ip;
     }
-
-    /**
-     * 获取异常堆栈信息
-     */
-    private String getStackTrace(Throwable throwable) {
-        if (throwable == null) {
-            return "";
-        }
-        log.error("获取异常堆栈信息", throwable);
-        java.io.StringWriter sw = new java.io.StringWriter();
-        java.io.PrintWriter pw = new java.io.PrintWriter(sw);
-        throwable.printStackTrace(pw);
-        return sw.toString();
-    }
 }