增加上传文件类型

railway-common/src/main/java/com/railway/common/utils/file/MimeTypeUtils.java

@@ -37,7 +37,10 @@ public class MimeTypeUtils {
       // 视频格式
       "mp4", "avi", "rmvb",
       // pdf
-      "pdf"};
+      "pdf",
+      // apk
+      "apk"
+  };
 
   public static String getExtension(String prefix) {
     switch (prefix) {