我正在尝试通过HTTP POST将带有文本消息的图像上传到php服务器，但发送的消息到达服务器为null
@IBOutlet var image: UIImageView!
var CUSTOMER_KEY = "dkeqnq9fmkhq"
var msg = "The first msg"
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func selectVideo(sender: AnyObject) {
var videoPickerController = UIImagePickerController()
videoPickerController.delegate = self
videoPickerController.sourceType = .SavedPhotosAlbum
videoPickerController.mediaTypes = [kUTTypeMovie as String]
self.presentViewController(videoPickerController, animated: true, completion: nil)
}
@IBAction func selectPicture(sender: AnyObject) {
let ImagePicker = UIImagePickerController()
ImagePicker.delegate = self
ImagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
self.presentViewController(ImagePicker, animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
image.image = info[UIImagePickerControllerOriginalImage] as? UIImage
self.dismissViewControllerAnimated(true, completion: nil)
}
@IBAction func upload_request(sender: AnyObject) {
UploadRequest()
}
func UploadRequest()
{
let comURL = "myurlhere?customer_key=dkeqnq9fmkhq&msg=MSGHere"
let sendURL:NSURL = NSURL(string: comURL.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!)!
let request = NSMutableURLRequest(URL: sendURL)
request.HTTPMethod = "POST"
let boundary = generateBoundaryString()
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
if (image.image == nil)
{
return
}
let image_data = UIImagePNGRepresentation(image.image!)
if(image_data == nil)
{
return
}
let body = NSMutableData()
let newRandomName = randomStringWithLength(32)
let fname = (newRandomName as String) + ".png"
let mimetype = "image/png"
print ("New File Name:" + (newRandomName as String))
body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition:form-data; name=\"test\"\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("hi\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition:form-data; name=\"file\"; filename=\"\(fname)\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: \(mimetype)\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(image_data!)
body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("--\(boundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
request.HTTPBody = body
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) {
(
let data, let response, let error) in
guard let _:NSData = data, let _:NSURLResponse = response where error == nil else {
print("error")
return
}
let dataString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print(dataString)
}
task.resume()
}
func generateBoundaryString() -> String
{
return "Boundary-\(NSUUID().UUIDString)"
}
func randomStringWithLength (len : Int) -> NSString {
let letters : NSString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
var randomString : NSMutableString = NSMutableString(capacity: len)
for (var i=0; i < len; i++){
var length = UInt32 (letters.length)
var rand = arc4random_uniform(length)
randomString.appendFormat("%C", letters.characterAtIndex(Int(rand)))
}
return randomString
}
另外如果我想同时发送图像，视频和短信同样如何做到这一点，我选择它后采取视频路径并通过HTTP POST上传到服务器？
答案 0 :(得分：0)
对所有类型的请求使用Alamofire框架。它简单易实现
Alamofire.upload(.POST, requestURL, headers: nil, multipartFormData: { multipartFormData in
if image != nil
{
if let imageData = UIImageJPEGRepresentation(image!, 1)
{
multipartFormData.appendBodyPart(data: imageData, name: "file", fileName: "profile.jpg", mimeType: "image/jpeg")
}
}
for (key, value) in params
{
multipartFormData.appendBodyPart(data: value.dataUsingEncoding(NSUTF8StringEncoding)!, name: key)
}
},
encodingMemoryThreshold: Manager.MultipartFormDataEncodingMemoryThreshold,
encodingCompletion: { encodingResult in
switch encodingResult {
case .Success(let upload, _, _):
upload.responseJSON { response in
success(response: response.result.value)
}
case .Failure(let error):
failure(error: error)
}
})
答案 1 :(得分：0)
使用Alamofire，然后将此类用作请求管理器。来自this answer
的urlRequestWithComponents函数引用
class MultiFormRequest {
private func urlRequestWithComponents(url:NSURL, parameters:[String:AnyObject], imageData:(key:String,data:NSData)?) -> (URLRequestConvertible, NSData) {
// create url request to send
let mutableURLRequest = NSMutableURLRequest(URL: url)
mutableURLRequest.HTTPMethod = Alamofire.Method.POST.rawValue
let boundaryConstant = "myRandomBoundary12345";
let contentType = "multipart/form-data;boundary="+boundaryConstant
mutableURLRequest.setValue(contentType, forHTTPHeaderField: "Content-Type")
// create upload data to send
let uploadData = NSMutableData()
if let imageData = imageData {
// add image
uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
uploadData.appendData("Content-Disposition: form-data; name=\"\(imageData.key)\"; filename=\"\(imageData.key).jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
uploadData.appendData("Content-Type: image/png\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
uploadData.appendData(imageData.data)
}
// add parameters
for (key, value) in parameters {
uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
uploadData.appendData("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n\(value)".dataUsingEncoding(NSUTF8StringEncoding)!)
}
uploadData.appendData("\r\n--\(boundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
// return URLRequestConvertible and NSData
return (Alamofire.ParameterEncoding.URL.encode(mutableURLRequest, parameters: nil).0, uploadData)
}
func requestWithParams(url:NSURL,
paramsDic:[String:AnyObject],
imageData:(key:String,data:NSData)?,
succesBlock:((result:AnyObject?)->Void)?,
failBlock:((error:NSError?)->Void)?) {
let urlRequest = urlRequestWithComponents(url, parameters: paramsDic, imageData: imageData)
UIApplication.sharedApplication().networkActivityIndicatorVisible = true
Alamofire.upload(urlRequest.0, data: urlRequest.1)
.responseJSON(completionHandler: { (response) in
UIApplication.sharedApplication().networkActivityIndicatorVisible = false
switch response.result {
case .Success:
succesBlock?(result:response.result.value)
case .Failure:
failBlock?(error:response.result.error)
}
})
}
}
答案 2 :(得分：0)
您可以轻松地将文本发送到服务器，如下所示：
func sendText () {
var url:String = "Your url"
var param = ["name": self.nameTextField.text!, "otherparameter":self.otherparameterTextField.text!, "otherparameter2":self.otherparameter2TextField.text!]
Alamofire.request(.POST, url , parameters: param).responseJSON { response in
if let data = response.result.value {
print(data)
}
}
}