Uploading Blobs and Clobs

The fileAccept() element applies only to Blob or Clob parameters, indicating the type of file to accept when uploading a new value. The attribute is also supported on parameters.

For example:

import lombok.Getter;
import lombok.Setter;

public class ScannedDocument {

    @Property(fileAccept="image/*")                 (1)
    @Getter @Setter
    private Blob scannedImage;

}
1 as per reference docs, either a media type (such as image/*) or a file type extension (such as .png).