다음 Base64 인코딩 문자열을 디코딩하려고합니다.
/9j/4AAQSkZJRgABAQAASABIAAD/4QBYRXhpZgAATU0AKgAAAAgAAgESAAMAAAABAAEAAIdpAAQAAAABAAAAJgAAAAAAA6ABAAMAAAABAAEAAKACAAQAAAABAAAAZKADAAQAAAABAAAAZAAAAAD/7QA4UGhvdG9zaG9wIDMuMAA4QklNBAQAAAAAAAA4QklNBCUAAAAAABDUHYzZjwCyBOmACZjs%2BEJ%2B/8AAEQgAZABkAwEiAAIRAQMRAf/EAB8AAAEFAQEBAQEBAAAAAAAAAAABAgMEBQYHCAkKC//EALUQAAIBAwMCBAMFBQQEAAABfQECAwAEEQUSITFBBhNRYQcicRQygZGhCCNCscEVUtHwJDNicoIJChYXGBkaJSYnKCkqNDU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6g4SFhoeIiYqSk5SVlpeYmZqio6Slpqeoqaqys7S1tre4ubrCw8TFxsfIycrS09TV1tfY2drh4uPk5ebn6Onq8fLz9PX29/j5%2Bv/EAB8BAAMBAQEBAQEBAQEAAAAAAAABAgMEBQYHCAkKC//EALURAAIBAgQEAwQHBQQEAAECdwABAgMRBAUhMQYSQVEHYXETIjKBCBRCkaGxwQkjM1LwFWJy0QoWJDThJfEXGBkaJicoKSo1Njc4OTpDREVGR0hJSlNUVVZXWFlaY2RlZmdoaWpzdHV2d3h5eoKDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uLj5OXm5%2Bjp6vLz9PX29/j5%2Bv/bAEMABgYGBgYGCgYGCg4KCgoOEg4ODg4SFxISEhISFxwXFxcXFxccHBwcHBwcHCIiIiIiIicnJycnLCwsLCwsLCwsLP/bAEMBBwcHCwoLEwoKEy4fGh8uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLv/dAAQAB//aAAwDAQACEQMRAD8A5RRzQ3ApwppORXkbnqsRT%2BlSZ/WoRx0p2T0oEPY0ufSoycinE/nSEP8AapFqHdUyE4oEPJ4pm7PWkJ600dKaGTDpTxzmoh6VJnAHvT8xodlh0o3P/nNJn8aTPsfypDuf/9DlScc1ESM1XknUDINV/tIPf2rybM9Rsv8AendqpC4BFSCZSDzQ0xXLQx%2BtIxzUe8c0p5ANLURMD39qnHtVVXHSpQwPFKwhxPU03dtxUbPjj0qFnLNj0q0BeU0pfnNVEfjNPDZOfShIZZ3Ubvaq4Zu1LlvWpsVY/9Hyh5ye9V2mPY1SaTioml9a4lA9Bs1PtLDvUgvCKxPMNJvPrT5ES5M6QXw45xU5vwRjNcr5lL5vPWj2aFznVLfDd1qUXwx1rkhMc9acZyO9T7JBznUm%2BX1pUuhk%2B9ckZzkDPvU8dyQetP2Yc52CzDirCsMZrl47v3rSgus8VDgaJmyCcdcUc%2BtU/NLcgmjefU1nZlH/0vCC1RliaZmjNc52Dt3FGaYTSE0xDy1JuphNGaYh%2B7FG4mmE00mhITY/JzmpAxFQCnZp2BFtXI71aiuCvOayw1SB6mw7nRLdgr1Ip32of3jWD5jDpR5r%2BtZ%2BzK52f//T%2Bfc96XPFIPekJrA6x2eKaemKTNJnmmIdmgU2lzQIM%2BlJnmkJpuaaEPzS7qjzxS54pgPyelGcGm03PNAFkOv8VLvSqxOaTIpWC5//1Pn3NNPtSdqaaxOpsdTaM8UUxCmlpBTScGmICaQ0UgoELmkBpvenUwFJpAc00mlFAC4J6Uu003NJQB//1fnjP8qTNH%2BFB7VkjqY3PFO7Uw9Kf/hQSgzxTG60/wDhpjdaoGA5FGaB92k9KBC44zSdqd2pg6UwFpDxS0jdKAGnrSZobrSUAf/Z
Online Base64 to Image Converter를 사용하여 테스트했으며 정상적으로 표시되므로 유효합니다. 다음 코드를 사용합니다.
let thumbData = NSData(base64EncodedString: thumbnaill, options: NSDataBase64DecodingOptions(rawValue: 0))
if let b = thumbData {
let thumb = UIImage(data: b)
curr_item.thumbnail = thumb
}
문제는 thumbData항상 nil입니다. 내가 뭘 잘못하고 있는지 잘 모르겠습니다.
위에서 제공 한 "base64"데이터는 URL 인코딩됩니다. 예를 들어 "+"문자 대신 % 2B가 있습니다. 복사 / 붙여 넣기 오류가 아니고 실제 데이터가 URL 인코딩 된 경우 디코딩하기 전에 먼저 해당 인코딩을 제거해야합니다. 이 같은:
if let decoded = thumbnaill.stringByRemovingPercentEncoding {
let thumbData = NSData(base64EncodedString: decoded, options: NSDataBase64DecodingOptions(rawValue: 0))
} else {
print("Couldn't decode string")
}
이 기사는 인터넷에서 수집됩니다. 재 인쇄 할 때 출처를 알려주십시오.
침해가 발생한 경우 연락 주시기 바랍니다[email protected] 삭제
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