diff --git a/oss-service/src/main/java/cn/axzo/oss/service/impl/FileServiceImpl.java b/oss-service/src/main/java/cn/axzo/oss/service/impl/FileServiceImpl.java
index 092798a..683b767 100644
--- a/oss-service/src/main/java/cn/axzo/oss/service/impl/FileServiceImpl.java
+++ b/oss-service/src/main/java/cn/axzo/oss/service/impl/FileServiceImpl.java
@@ -986,7 +986,7 @@ public class FileServiceImpl implements FileService {
             case PUBLIC_BUCKET://公有桶 - 永久链接，例如 http://xxx.png
                 String url = this.fileManager.fetchDownloadUrl(bucketName, tgtFileKey, channelCode);//item.getBucketName() item.getChannelCode()
                 return SignUrlDownloadResponse.builder()
-                        .signUrl(this.buildPublicXImageProcess(url, null))
+                        .signUrl(this.fileManager.buildPublicXImageProcess(url, null))
                         .fileKey(fileUuid)//item.getFileUuid()
                         .build();
             case PRIVATE_BUCKET://私有桶 - 临时授权链接 例如 http://xxx.png?Expire=a&AccessKeyId=b&Signature=c&repsonse-content-disposition=d