文件超出规定大小提示优化

eladmin-common/src/main/java/me/zhengjie/utils/FileUtil.java

@@ -253,7 +253,7 @@ public class FileUtil extends cn.hutool.core.io.FileUtil {
         // 1M
         int len = 1024 * 1024;
         if (size > (maxSize * len)) {
-            throw new BadRequestException("文件超出规定大小：" + maxSize + "M");
+            throw new BadRequestException("文件超出规定大小:" + maxSize + "MB");
         }
     }