feat(file-upload):将文件后缀名自动转小写

src/main/java/com/uas/platform/b2c/common/base/service/impl/MinioClientImpl.java

@@ -38,7 +38,7 @@ public class MinioClientImpl {
      * @throws Exception Exception
      */
     public String upload(InputStream inputStream, int size, String name) throws Exception {
-        String extension = name.lastIndexOf(".") == -1 ? "" : name.substring(name.lastIndexOf(".") + 1);
+        String extension = name.lastIndexOf(".") == -1 ? "" : name.substring(name.lastIndexOf(".") + 1).toLowerCase();
         JSONObject mime = FastjsonUtils.parseObject(COMMON_MIME);
         String contentType = DEFAULT_MIME;
         String objectName = UUID.randomUUID().toString();