图片添加jfif格式

blade-common/src/main/java/org/springblade/common/utils/CommonUtil.java

@@ -976,15 +976,41 @@ public class CommonUtil {
      * @param keepAspectRatio 是否保持原比例
      */
     public static void rotateAndScaleImageByThumbnails(InputStream is, OutputStream os, double rotate, String format, double quality, int width, int height, boolean keepAspectRatio) throws IOException {
+        // 标准化输出格式
+        String outputFormat = normalizeFormat(format);
+
         Thumbnails.of(is)
                 .size(width, height)
                 .keepAspectRatio(keepAspectRatio)
                 .rotate(rotate)
-                .outputFormat(format)
+                .outputFormat(outputFormat)
                 .outputQuality(quality)
                 .toOutputStream(os);
     }
 
+    /**
+     * 标准化图像格式名称
+     */
+    private static String normalizeFormat(String format) {
+        if (format == null) {
+            return "JPEG"; // 默认格式
+        }
+
+        switch (format.toUpperCase()) {
+            case "JFIF":
+            case "JPEG":
+            case "JPG":
+                return "JPEG";
+            case "PNG":
+            case "GIF":
+            case "BMP":
+                return format.toUpperCase();
+            default:
+                // 对于不支持的格式，返回默认的JPEG格式
+                return "JPEG";
+        }
+    }
+
     /**
      * 根据起止日期获取工作日
      *