diff --git a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/controller/CommonController.java b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/controller/CommonController.java
index c4d102d1..f4473209 100644
--- a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/controller/CommonController.java
+++ b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/controller/CommonController.java
@@ -64,7 +64,7 @@ public class CommonController {
     @Value(value="${jero.fileSuffixLimits}")
     private String[] fileSuffixLimits;
 
-    private static String UTF8 ="UTF-8";
+    private static final String UTF8 ="UTF-8";
 
     /**
      * @Author 政辉
@@ -176,7 +176,7 @@ public class CommonController {
                 fileName = ossFile.getFileName();
                 inputStream = MinioUtil.getMinioFile(MinioUtil.getBucketName(), url);
             }
-            response.addHeader("Content-Disposition", "attachment;fileName=" + new String(fileName.getBytes(UTF8),StandardCharsets.ISO_8859_1));
+            response.addHeader("Content-Disposition", "attachment;fileName=" + new String(fileName.getBytes(StandardCharsets.UTF_8),StandardCharsets.ISO_8859_1));
             response.setContentType("application/force-download");// 设置强制下载不打开
             outputStream = response.getOutputStream();
             byte[] buf = new byte[1024];
@@ -311,7 +311,7 @@ public class CommonController {
                 throw new RuntimeException("文件["+imgPath+"]不存在..");
             }
             response.setContentType("application/force-download");// 设置强制下载不打开
-            response.addHeader("Content-Disposition", "attachment;fileName=" + new String(file.getName().getBytes(UTF8), StandardCharsets.ISO_8859_1));
+            response.addHeader("Content-Disposition", "attachment;fileName=" + new String(file.getName().getBytes(StandardCharsets.UTF_8), StandardCharsets.ISO_8859_1));
             inputStream = new BufferedInputStream(new FileInputStream(filePath));
             outputStream = response.getOutputStream();
             byte[] buf = new byte[1024];