diff --git a/dubbo-admin/src/main/java/com/alibaba/dubbo/governance/web/common/interceptor/RestfuleUrlRewriter.java b/dubbo-admin/src/main/java/com/alibaba/dubbo/governance/web/common/interceptor/RestfuleUrlRewriter.java
index 9810eae5153..c930d5830a2 100644
--- a/dubbo-admin/src/main/java/com/alibaba/dubbo/governance/web/common/interceptor/RestfuleUrlRewriter.java
+++ b/dubbo-admin/src/main/java/com/alibaba/dubbo/governance/web/common/interceptor/RestfuleUrlRewriter.java
@@ -101,7 +101,7 @@ public void postSubstitution(RewriteSubstitutionContext context) {
             return;
         }
         //兼容包含group的path
-        String[] split = (String[]) temp.toArray();
+        String[] split = (String[]) temp.toArray(new String[temp.size()]);
         
         if(temp.size()>2&&temp.contains("services")){
             List<String> parts = new ArrayList<String>();