diff --git a/oss-http-api/src/main/java/cn/axzo/oss/http/model/FindFileUrlRequest.java b/oss-http-api/src/main/java/cn/axzo/oss/http/model/FindFileUrlRequest.java
index 72660e8..7165a4d 100644
--- a/oss-http-api/src/main/java/cn/axzo/oss/http/model/FindFileUrlRequest.java
+++ b/oss-http-api/src/main/java/cn/axzo/oss/http/model/FindFileUrlRequest.java
@@ -3,6 +3,7 @@ package cn.axzo.oss.http.model;
 import lombok.Data;
 
 import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
 import java.util.List;
 
 /**
@@ -16,6 +17,6 @@ public class FindFileUrlRequest {
     @NotBlank(message = "appCode must not be null")
     private String appCode;
 
-    @NotBlank(message = "fileKey must not be null")
+    @NotNull(message = "fileKey must not be null")
     private List<String> fileKey;
 }
\ No newline at end of file