我必须使用Alamofire.upload(multipartFormData方法上传图片。
我的代码在下面，但出现这样的错误：
FAILURE: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error
Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character
0." UserInfo={NSDebugDescription=Invalid value around character 0.}))
有人可以告诉我如何解决该问题吗？
func photoSave(_ photoImage : UIImage, type : String)
{
let urlString = ServerUrl + "document_upload"
let imageUpload = UIImageJPEGRepresentation(photoImage, 0.5)
Alamofire.upload(multipartFormData: { (multipartFormData) in
let date = Date().timeIntervalSince1970 * 1000
let fileName = String(date) + "Image.jpg"
multipartFormData.append(imageUpload!, withName: "image", fileName: fileName, mimeType: "image/jpg")
multipartFormData.append((self.token.data(using: String.Encoding.utf8, allowLossyConversion: false)!), withName: "token")
multipartFormData.append((type.data(using: String.Encoding.utf8, allowLossyConversion: false))!, withName: "document_type")
}, to: urlString, method: .post, encodingCompletion: { (result) in
switch result {
case .success(let upload, _, _):
upload.responseJSON { response in
print("response11 : ", response.request?.url! as Any,response)
if response.result.isSuccess
{
let result : AnyObject = response.result.value as AnyObject
let success = result["status_message"] as? String
if success == "Image Upload Successfully"
{
DispatchQueue.main.async
{
}
}
else
{
let msg = result["status_message"] as? String
DispatchQueue.main.async
{
let alert = UIAlertController(title: msg, message: "", preferredStyle: .alert)
let ok = UIAlertAction(title: "OK", style: .cancel, handler: { Void in
})
alert.addAction(ok)
self.present(alert, animated: true, completion: nil)
return
}
}
}
else
{
DispatchQueue.main.async
{
let alert = UIAlertController(title: "Network Connection Lost", message: "Please try again", preferredStyle: .alert)
let ok = UIAlertAction(title: "OK", style: .cancel, handler: { Void in
})
alert.addAction(ok)
self.present(alert, animated: true, completion: nil)
}
return
}
}
case .failure(let encodingError):
print(encodingError)
}
})
}
答案 0 :(得分：0)
尝试这种方法（从工作项目中复制粘贴），它应该与您一起使用。
func makeMultipartRequest(endPoint: String, parameters: [String:String], image: UIImage, add_headers: Bool = true, completion: @escaping (_ : Any) -> Void)
{
var headers: [String:String]? = nil
if add_headers
{
headers =
[
"Authorization" : LoginModel.instance.userToken,
"Content-type": "multipart/form-data",
"Accept": "application/json"
]
}
print(headers ?? "no headers")
Alamofire.upload(multipartFormData: { multipartFormData in
// image in our API have key : thePhoto
//
// resize image first
//
var tempImage = image
// 1) pick the largest of width or height
// 2) if the largest > 1280 then resize the image
// (respect to aspect ratio)
if tempImage.size.width > tempImage.size.height
{
if tempImage.size.width > 1280.0
{
tempImage = tempImage.resizeWithWidth(width: 1280.0)!
}
}
else
{
if tempImage.size.height > 1280.0
{
tempImage = tempImage.resizeWithHeight(height: 1280.0)!
}
}
//
// compress image then appending it to the upload request
//
if let imageData = UIImageJPEGRepresentation(tempImage, 0.7)
{
multipartFormData.append(imageData, withName: "thePhoto", fileName: "image.jpeg", mimeType: "image/jpeg")
}
// if u don't have parameters, remove the following loop
for (key, value) in parameters
{
multipartFormData.append(value.data(using: String.Encoding(rawValue: String.Encoding.utf8.rawValue))!, withName: key)
}
}, usingThreshold:UInt64.init(),
to: endPoint,
method: .post,
headers: headers,
encodingCompletion: { (result) in
switch result {
case .success(let upload, _, _):
upload.uploadProgress(closure: { (progress) in
print("Download Progress: \(progress.fractionCompleted)")
})
upload.responseJSON { response in
print("response : \(response)")
let backendData = response.result.value!
let status = Parsing_Manager.instance.parsingRequest(backendData)
completion(status)
}
break
case .failure(let encodingError):
print("the error is : \(encodingError.localizedDescription)")
completion("failed")
break
}
})
} // end of makeMultipartRequest
祝你好运！
答案 1 :(得分：0)
尝试一下，这对我有用。
func requestAPIWithImage( parameters: Parameters,url: URLConvertible,Completion: @escaping (_ success: Bool,_ response: AnyObject) -> Void) {
Alamofire.upload(multipartFormData: { (multipartFormData) in
print(parameters)
if Array(parameters.keys).contains(Keys.Image) {
multipartFormData.append(UIImageJPEGRepresentation((parameters)[Keys.Image] as! UIImage, 1)!, withName: "image", fileName: "swift_file.jpeg", mimeType: "image/jpeg")
}
for (key, value) in parameters {
print(key,value)
if key != Keys.Image{
multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
}
}
}, to:url)
{ (result) in
switch result {
case .success(let upload, _, _):
upload.uploadProgress(closure: { (progress) in
})
upload.responseJSON { response in
print(response.result)
self.getValidDict(result: response.result, completion: { (dict, error) in
var dict = dict
if dict == nil {
dict = NSDictionary.init(dictionary:
[kBaseMessageKey: error?.localizedDescription ?? "Some error has been occured",
kBaseStatusKey: false])
}
Completion(true,dict![Keys.result]! as AnyObject)
})
}
case .failure(let encodingError):
Completion(false,encodingError.localizedDescription as AnyObject)
break
}
}
}