我使用以下代码将单个图像上传到服务器（带参数），但我一直在尝试上传多个图片，但无法使其正常工作
创建NSData对象（保存在临时目录中的图像）。使用netdata类here
func uploadData(){
//create image data objects
let filemanager:NSFileManager = NSFileManager()
let files = filemanager.enumeratorAtPath(tempPicPath)
var counter:Int = Int()
while let file: AnyObject = files?.nextObject() {
imagePathCollection.append(tempPicPath + "/" + (file as NSString))
}
//convert to data objects ()
for path in imagePathCollection{
var image: UIImage? = UIImage(contentsOfFile: path)
if image != nil {
var sizeOfImage = image?.size
var resizedImage = RBSquareImageTo(image!, sizeOfImage!)
var imageData = UIImageJPEGRepresentation(resizedImage, 75)
imageDataCollection.append(NetData(data: imageData!, mimeType:MimeType(rawValue: "image/jpeg")!, filename: "myImage.jpeg"))
}
}
if(imageDataCollection.count > 1){
for (index, element) in enumerate(imageDataCollection) {
multipleImageUpload(imageDataCollection[index])
}
}else{
singleImageUpload(imageDataCollection[0])
}
}
使用Alamofire上传
func extrasImageUpoload(urlRequest:(URLRequestConvertible, NSData))->Request{
let request = Alamofire.upload(urlRequest.0, urlRequest.1)
.progress { (bytesWritten, totalBytesWritten, totalBytesExpectedToWrite) in
println("progress : \(totalBytesWritten) / \(totalBytesExpectedToWrite)")
}
return request
}
生成Alamofire请求
func urlRequestWithComponents(parameters:NSDictionary, uploadType:String) -> (URLRequestConvertible, NSData) {
var mutableURLRequest:NSMutableURLRequest = NSMutableURLRequest()
//set url type
if(uploadType == "extra"){
mutableURLRequest = NSMutableURLRequest(URL: NSURL(string: baseURL + "ticket/extra")!)
}else if(uploadType == "checkList"){
//uploadUrl = "ticket/mark"
mutableURLRequest = NSMutableURLRequest(URL: NSURL(string: baseURL + "ticket/mark")!)
}
// create url request to send
//var mutableURLRequest = NSMutableURLRequest(URL: NSURL(string: baseURL + "ticket/extra")!)
mutableURLRequest.HTTPMethod = Alamofire.Method.POST.rawValue
//let boundaryConstant = "myRandomBoundary12345"
let boundaryConstant = "NET-POST-boundary-\(arc4random())-\(arc4random())"
let contentType = "multipart/form-data;boundary="+boundaryConstant
//let pgToken = "c9049df83e8bfd7a3dfaef279cdb74478330ff2a"
mutableURLRequest.setValue(contentType, forHTTPHeaderField: "Content-Type")
mutableURLRequest.setValue(self.token, forHTTPHeaderField: "PG-Auth-Token")
// create upload data to send
let uploadData = NSMutableData()
// add parameters
for (key, value) in parameters {
uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
if value is NetData {
// add image
var postData = value as NetData
//uploadData.appendData("Content-Disposition: form-data; name=\"\(key)\"; filename=\"\(postData.filename)\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!
var filenameClause = " filename=\"\(postData.filename)\""
let contentDispositionString = "Content-Disposition: form-data; name=\"\(key)\";\(filenameClause)\r\n"
let contentDispositionData = contentDispositionString.dataUsingEncoding(NSUTF8StringEncoding)
uploadData.appendData(contentDispositionData!)
// append content type
//uploadData.appendData("Content-Type: image/png\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
let contentTypeString = "Content-Type: \(postData.mimeType.getString())\r\n\r\n"
let contentTypeData = contentTypeString.dataUsingEncoding(NSUTF8StringEncoding)
uploadData.appendData(contentTypeData!)
uploadData.appendData(postData.data)
}else{
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)
}
参数数组以及NSData集合如下
var params = ["pic":imageData,"ticketid":ticketID, "appversion":Utilities().getAPPVersion(), "description":"bla bla bla", "cost":50]
＆＃34;为imageData＆＃34;是图像的NSData对象的集合。代码工作正常但图像的NSData数组作为空数组接收。然而其余的参数包括＆＃34; appversion＆＃34;和＆＃34;描述＆＃34;将收到罚款
答案 0 :(得分：2)
import MobileCoreServices
func createRequest(userid: String, image: [UIImage]) throws -> NSMutableURLRequest {
var parameters: [String : AnyObject] = [
"userid": userid,
"Image1": image[0], // You need to set the UIImage Type image parameters
"Image2": image[1],
"Image3": image[2],
"Image4": image[3]
]
print(parameters)
let boundary = generateBoundaryString()
let url = URL(string: Your URL String)!
let request = NSMutableURLRequest(url: url)
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.httpBody = try createBody(with: parameters as [String : AnyObject], boundary: boundary)
return request
}
以下是multipart / form-data
中的上传图像和参数代码func createBody(with parameters: [String: AnyObject], boundary: String) throws -> Data {
var body = Data()
for (key, value) in parameters {
if(value is String || value is NSString) {
body.append("--\(boundary)\r\n")
body.append("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.append("\(value)\r\n")
}else if(value is UIImage) {
let r = arc4random()
let filename = "image\(r).jpg"
let data = UIImageJPEGRepresentation(value as! UIImage,1);
let mimetype = mimeTypeForPath(path: filename)
body.append("--\(boundary)\r\n")
body.append("Content-Disposition: form-data; name=\"\(key)\"; filename=\"\(filename)\"\r\n")
body.append("Content-Type: \(mimetype)\r\n\r\n")
body.append(data!)
body.append("\r\n")
}
}
body.append("--\(boundary)--\r\n")
return body
}
func mimeTypeForPath(path: String) -> String {
let pathExtension = path.pathExtension
var stringMimeType = "application/octet-stream";
if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension as! CFString, nil)?.takeRetainedValue() {
if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() {
stringMimeType = mimetype as NSString as String
}
}
return stringMimeType;
}
extension String {
var ns: NSString {
return self as NSString
}
var pathExtension: String? {
return ns.pathExtension
}
var lastPathComponent: String? {
return ns.lastPathComponent
}
}
答案 1 :(得分：1)
对我来说唯一不对的是你没有正确地创建初始边界。你不应该在第一个边界的开头有一个CRLF。我会尝试以下方法。
let uploadData = NSMutableData()
for (index, (key, value)) in enumerate(parameters) {
if index == 0 {
uploadData.appendData("--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
} else {
uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
}
if let postData as? NetData {
var filenameClause = " filename=\"\(postData.filename)\""
let contentDispositionString = "Content-Disposition: form-data; name=\"\(key)\";\(filenameClause)\r\n"
let contentDispositionData = contentDispositionString.dataUsingEncoding(NSUTF8StringEncoding)
uploadData.appendData(contentDispositionData!)
let contentTypeString = "Content-Type: \(postData.mimeType.getString())\r\n\r\n"
let contentTypeData = contentTypeString.dataUsingEncoding(NSUTF8StringEncoding)
uploadData.appendData(contentTypeData!)
uploadData.appendData(postData.data)
}
}
uploadData.appendData("\r\n--\(boundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
答案 2 :(得分：0)
在 Swift 中使用 Alamofire 只需在图像上传参数名称后附加“ []”，即可使其成为图像数组。以下是演示代码，其中我将“ []”与图像上传的参数名称一起使用，并创建了一个到相同参数名称的循环。 ;-）
func uploadImages(withImagesData imagesData: [Foundation.Data], parameters: [String: String]) {
Alamofire.upload(multipartFormData: { multipartFormData in
// import image to request
for imageData in imagesData {
multipartFormData.append(imageData, withName: "myImageParamName[]", fileName: "\(Date().timeIntervalSince1970).jpeg", mimeType: "image/jpeg")
}
for (key, value) in parameters {
multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
}
}, to: urlString,
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON { response in
print("upload Success")
}
case .failure(let error):
print("upload Failed With Error: ", error)
}
})
}