ios - Iphone 以不同的方式返回照片数据

Question

我使用 CardDAV 将联系人导入到 Iphone。

Photo 属性在这里发生了一件奇怪的事情。

我是这样把照片数据发给Iphone的，

PHOTO;ENCODING=b;TYPE=JPG: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`

等等......

当Iphone以这种方式返回时，

PHOTO;ENCODING=b;TYPE=JPEG;X-ABCROP-RECTANGLE=ABClipRect_1&0&0&160&160&ke51PoQcz6s21p/Tl7rZyw==:
 /9j/4AAQSkZJRgABAQEAYABgAAD/4QCARXhpZgAATU0AKgAAAAgABAEaAAUAAAABAAAAPgEbAA
 UAAAABAAAARgEoAAMAAAABAAIAAIdpAAQAAAABAAAATgAAAAAAAABgAAAAAQAAAGAAAAABAAOg
 AQADAAAAAQABAACgAgAEAAAAAQAAAKCgAwAEAAAAAQAAAGoAAAAA/9sAQwABAQEBAQEBAQEBAQ
 EBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB/9sA
 QwEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQ
 EBAQEBAQEBAQEB/8AAEQgAagCgAwERAAIRAQMRAf/EAB8AAAEFAQEBAQEBAAAAAAAAAAABAgME
 BQYHCAkKC//EALUQAAIBAwMCBAMFBQQEAAABfQECAwAEEQUSITFBBhNRYQcicRQygZGhCCNCsc
 EVUtHwJDNicoIJChYXGBkaJSYnKCkqNDU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0
 dXZ3eHl6g4SFhoeIiYqSk5SVlpeYmZqio6Slpqeoqaqys7S1tre4ubrCw8TFxsfIycrS09TV1t
 fY2drh4uPk5ebn6Onq8fLz9PX29/j5+v/EAB8BAAMBAQEBAQEBAQEAAAAAAAABAgMEBQYHCAkK
 C//EALURAAIBAgQEAwQHBQQEAAECdwABAgMRBAUhMQYSQVEHYXETIjKBCBRCkaGxwQkjM1LwFW
 Jy0QoWJDThJfEXGBkaJicoKSo1Njc4OTpDREVGR0hJSlNUVVZXWFlaY2RlZmdoaWpzdHV2d3h5
 eoKDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2u
  and so on .....

我需要比较图像，但由于 iPhone 返回的照片数据，我无法执行此操作。注意:Iphone 每次返回的照片数据不同，但图像相同。

任何人都知道 Iphone 使用什么方式来转换图像。

Answer 1

客户只是根据 https://www.rfc-editor.org/rfc/rfc2426#section-2.6 添加适当的折叠

换句话说，您不应在 vCard 中拥有超过 75 个字符的行。你需要折叠它们。