我下面有这种代码
func upload(){
let img = UIImage(named: "1")
let imgData = UIImageJPEGRepresentation(img!, 1)
let data = imgData?.base64EncodedString()
var request = URLRequest(url: URL(string: url)!)
request.httpMethod = "POST"
request.setValue("\(auth)", forHTTPHeaderField: "Authorization")
request.setValue("application/xml", forHTTPHeaderField: "Content-Type")
var postString = "<uploadrequest>"
postString += "<folderid>123</folderid>"
postString += "<folder_name>images</folder_name>"
postString += "<image_byte>\(data!)</image_byte>"
postString += "</uploadrequest>"
request.httpBody = postString.data(using: .utf8)
let configuration = URLSessionConfiguration.default
let session = URLSession(configuration: configuration, delegate: self, delegateQueue: OperationQueue.main)
let task = session.uploadTask(with: request, from: imgData!, completionHandler: {
(data, response, error) -> Void in
if let error = error {
print(error)
return
}
if let data = data {
_ = self.parseJsonData(data: data)
}
})
task.resume()
}
func urlSession(_ session: URLSession, task: URLSessionTask, didSendBodyData bytesSent: Int64, totalBytesSent: Int64, totalBytesExpectedToSend: Int64) {
print("sent:", totalBytesSent, "from:", totalBytesExpectedToSend)
let size = totalBytesSent / totalBytesExpectedToSend
self.progressbar.progress = Float(size)
}
我的目标是使用API上传图像并获得其上传进度。该图像将转换为base64，并插入到API的字符串后的
<image_byte>\(data!)</image_byte>处。然后我得到的是这样的:
发送:32768从:927220
发送:65536从:927220
发送:131072从:927220
发送:163840从:927220
发送:262144从:927220
发送:294912来自:927220
发送:360448从:927220
发送:393216来自:927220
发送:425984从:927220
发送:491520来自:927220
发送:524288来自:927220
发送:557056从:927220
发送:589824从:927220
发送:622592从:927220
发送:655360从:927220
发送:688128从:927220
发送:720896从:927220
发送:786432从:927220
发送:819200从:927220
发送:851968来自:927220
发送:927220从:927220
错误域= NSCocoaErrorDomain代码= 3840“JSON文本不是以数组或对象开头，并且没有允许设置片段的选项。”
UserInfo = {NSDebugDescription = JSON文本不是以数组开头或
对象和允许未设置片段的选项。}
但是，如果我正在使用其他类似的方法(没有uploadTask)，则效果很好，但没有上传进度。
let task = URLSession.shared.dataTask(with: request, completionHandler: {
(data, response, error) -> Void in
if let error = error {
print(error)
return
}
if let data = data {
_ = self.parseJsonData(data: data)
}
})
我也尝试过
Alamofire。带有Alamofire函数的request是成功的，但是仍然没有上传进度，带有Alamofire函数(multipartformData)的upload导致此错误:responseSerializationFailed(原因:Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(错误:Error Domain = NSCocoaErrorDomain代码= 3840“字符3无效值。” UserInfo = {NSDebugDescription =字符3无效值)})
我想知道我的代码是否有误。您能告诉我我该如何处理我的代码吗？还是问题出在我的API上，因为我的API只接受
base64代码？如果您想查看我的
Alamofire代码，那就是there拜托，有人帮我解决这个问题。
谢谢! :)
编辑1
这是我通过请求功能(没有上传功能)得到的结果
{
"media_preview" = {
"image_media" = {
fileid = 4928501;
filename = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
folderpath = "product\\66861/images800\\";
height = 533;
src = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
width = 800;
};
"medium_media" = {
fileid = 4928503;
filename = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
folderpath = "product\\66861/images500\\";
height = 333;
src = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
width = 500;
};
"small_media" = {
fileid = 4928503;
filename = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
folderpath = "\product\\66861/images300\\";
height = 200;
src = "/zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
width = 300;
};
"source_media" = {
fileid = 4928499;
filename = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
folderpath = "\\product\\66861images\\";
height = 666;
src = "/zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
width = 999;
};
"thumbnail_media" = {
fileid = 4928507;
filename = "zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
folderpath = \\product\\66861/thumb\\";
height = 150;
src = "/zhzvoHBb1ogda9bps13R5IavYiadCm.jpg";
width = 150;
};
};
responsestatus = {
"access_token" = "<null>";
code = 00;
description = Success;
};
}
编辑2
这是
parseJsonData(data: Data)的代码func parseJsonData(data: Data) {
do {
let jsonResult = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as? NSDictionary
print(jsonResult!)
} catch {
print(error)
}
}
最佳答案
对于具有大量参数的图像正在上传到服务器。尝试使用此代码 Alamofire 。它要工作。
Alamofire.upload(multipartFormData: { (multipartFormData : MultipartFormData) in
let count = imageToUpload.count
for (key, value) in parameters {
multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
}
for i in 0..<count{
let image:UIImage = self.loadImage(imageToUpload[i])
if let imageData = image.jpegData(compressionQuality: 0.5) {
let imageName = "image[\(i)]"
multipartFormData.append(imageData as Data, withName:imageName , fileName: imageToUpload[i], mimeType: "image/jpeg")
}
}
}, usingThreshold: UInt64.init(), to: serviceUrl, method: .post, headers: headers) { (result) in
switch result {
case .success(let upload, _ , _):
upload.uploadProgress(closure: { (progress) in
print("uploding: \(progress.fractionCompleted)")
})
upload.responseJSON { response in
if response.result.isFailure {
if let err = response.error{
print(err)
}
return
}
guard let jsonData = response.result.value else {
return
}
//
do{
let json = try JSONSerialization.jsonObject(with: response.data as! Data, options: [])
print("josnResposne:\(json)")
} catch let parsingError {
print("Error", parsingError)
}
}
case .failure(let encodingError):
print("failed")
print(encodingError)
}
}
关于ios - Swift 4-使用URLSession获取上传图像进度，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/53650584/