fix 修复 OssClient 切换服务 实例不正确问题

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java

@@ -108,7 +108,7 @@ public class SysOssServiceImpl implements ISysOssService, OssService {
         }
         FileUtils.setAttachmentResponseHeader(response, sysOss.getOriginalName());
         response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE + "; charset=UTF-8");
-        OssClient storage = OssFactory.instance();
+        OssClient storage = OssFactory.instance(sysOss.getService());
         try(InputStream inputStream = storage.getObjectContent(sysOss.getUrl())) {
             int available = inputStream.available();
             IoUtil.copy(inputStream, response.getOutputStream(), available);