將圖像轉換為Json Swift 3的Base64

Question

我需要將UIImage轉換為base64以在JSON上發送它。 我的問題是轉換。 我的代碼：

//Proof #1
let base64String = imageData?.base64EncodedData(options: .endLineWithLineFeed)
//Proof #2 
let base64String = imageData?.base64EncodedString(options: .endLineWithLineFeed)

let dataJson = ["patient_image": ["title": titleInfo, "description": descriptionInfo, "patient_id": globalID, "images_attributes": ["file": base64String]]]

    let url = NSURL(string: "MY_URL")

    let request = NSMutableURLRequest(url: url! as URL)
    request.httpMethod = "POST" //set http method as POST

    request.httpBody = try! JSONSerialization.data(withJSONObject: dataJson, options: .prettyPrinted)

    request.addValue("application/json", forHTTPHeaderField: "Content-Type")

我嘗試了Swift 3提供的兩種方法來將圖像轉換為base64 ，但是我都遇到相同的錯誤：

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Invalid type in JSON write (_SwiftValue)'

有人可以幫我嗎？ 非常感謝您的幫助。

Answer 1

刪除選項：

let base64String = imageData.base64EncodedString()

完整的代碼：

/*
let imageData = Data()
let titleInfo = "test"
let descriptionInfo = "test"
let globalID = "test"
*/

let base64String = imageData.base64EncodedString()

let dataJson = ["patient_image": ["title": titleInfo, "description": descriptionInfo, "patient_id": globalID, "images_attributes": ["file": base64String]]]

let url = NSURL(string: "MY_URL")
let request = NSMutableURLRequest(url: url! as URL)
request.httpMethod = "POST" //set http method as POST

request.httpBody = try! JSONSerialization.data(withJSONObject: dataJson, options: .prettyPrinted)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")

同樣（與您的問題無關），鍵名images_attributes聽起來像需要數組。