Swift에서 매개 변수로 이미지 업로드

Swift에서 매개 변수로 이미지 업로드

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Swift에서 매개 변수가있는 이미지를 업로드하려고합니다. 이 코드를 시도하면 이미지가 아닌 매개 변수를 얻을 수 있습니다.

uploadFileToUrl(fotiño:UIImage){
    var foto =  UIImage(data: UIImageJPEGRepresentation(fotiño, 0.2))


    var request = NSMutableURLRequest(URL:NSURL(string: "URL"))
    request.HTTPMethod = "POST"

    var bodyData = "id_user="PARAMETERS&ETC""


    request.HTTPBody = bodyData.dataUsingEncoding(NSUTF8StringEncoding);
    request.HTTPBody = NSData.dataWithData(UIImagePNGRepresentation(foto))
    println("miraqui \(request.debugDescription)")
    var response: AutoreleasingUnsafeMutablePointer<NSURLResponse?>=nil
    var HTTPError: NSError? = nil
    var JSONError: NSError? = nil

    var dataVal: NSData? =  NSURLConnection.sendSynchronousRequest(request, returningResponse: response, error: &HTTPError)

    if ((dataVal != nil) && (HTTPError == nil)) {
        var jsonResult = NSJSONSerialization.JSONObjectWithData(dataVal!, options: NSJSONReadingOptions.MutableContainers, error: &JSONError)

        if (JSONError != nil) {
            println("Bad JSON")
        } else {
            println("Synchronous\(jsonResult)")
        }
    } else if (HTTPError != nil) {
        println("Request failed")
    } else {
        println("No Data returned")
    }
}

편집 2 :

저장된 UIImage의 경로에 문제가 있다고 생각합니다. php가 파일이 이미 존재한다고 알려주기 때문입니다.

func createRequest (#userid: String, disco: String, id_disco: String, pub: String, foto: UIImage) -> NSURLRequest {
    let param = [
        "id_user"  : userid,
        "name_discoteca"    : disco,
        "id_discoteca" : id_disco,
        "ispublic" : pub] // build your dictionary however appropriate

    let boundary = generateBoundaryString()

    let url = NSURL(string: "http....")
    let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.timeoutInterval = 60
    request.HTTPShouldHandleCookies = false
    request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
    var imagesaver = ImageSaver()

    var image = foto  // However you create/get a UIImage
    let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
    let destinationPath = documentsPath.stringByAppendingPathComponent("VipKing.jpg")
    UIImageJPEGRepresentation(image,1.0).writeToFile(destinationPath, atomically: true)


    self.saveImage(foto, withFileName: "asdasd22.jpg")


    var path = self.documentsPathForFileName("asdasd22.jpg")


    self.ViewImage.image = self.loadImageWithFileName("asdasd22.jpg")



  //  let path1 = NSBundle.mainBundle().pathForResource("asdasd22", ofType: "jpg", inDirectory: path) as String! 

    **//path1 always crash**


    println(param.debugDescription)
    println(path.debugDescription)
    println(boundary.debugDescription)




    request.HTTPBody = createBodyWithParameters(param, filePathKey: "asdasd22.jpg", paths: [path], boundary: boundary)

    println(request.debugDescription)


    return request
}

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아래 귀하의 의견에서 귀하는 $_FILES구문을 사용 하여 파일을 검색하고 있음을 알립니다 . 즉, multipart/form-data요청 을 만들고 싶다는 의미입니다 . 프로세스는 기본적으로 다음과 같습니다.

1. multipart/form-data요청 의 경계를 지정하십시오 .

2. 를 지정 Content-Type그것을로 지정하는 요청의 multipart/form-data어떤 경계입니다.

3. 개별 구성 요소를 구분하여 요청 본문을 만듭니다 (게시 된 각 값과 각 업로드 사이).

자세한 내용은 RFC 7578을 참조하십시오 . 어쨌든 Swift 3 이상에서는 다음과 같이 보일 수 있습니다.

/// Create request
///
/// - parameter userid:   The userid to be passed to web service
/// - parameter password: The password to be passed to web service
/// - parameter email:    The email address to be passed to web service
///
/// - returns:            The `URLRequest` that was created

func createRequest(userid: String, password: String, email: String) throws -> URLRequest {
    let parameters = [
        "user_id"  : userid,
        "email"    : email,
        "password" : password]  // build your dictionary however appropriate

    let boundary = generateBoundaryString()

    let url = URL(string: "https://example.com/imageupload.php")!
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")

    let path1 = Bundle.main.path(forResource: "image1", ofType: "png")!
    request.httpBody = try createBody(with: parameters, filePathKey: "file", paths: [path1], boundary: boundary)

    return request
}

/// Create body of the `multipart/form-data` request
///
/// - parameter parameters:   The optional dictionary containing keys and values to be passed to web service
/// - parameter filePathKey:  The optional field name to be used when uploading files. If you supply paths, you must supply filePathKey, too.
/// - parameter paths:        The optional array of file paths of the files to be uploaded
/// - parameter boundary:     The `multipart/form-data` boundary
///
/// - returns:                The `Data` of the body of the request

private func createBody(with parameters: [String: String]?, filePathKey: String, paths: [String], boundary: String) throws -> Data {
    var body = Data()

    if parameters != nil {
        for (key, value) in parameters! {
            body.append("--\(boundary)\r\n")
            body.append("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
            body.append("\(value)\r\n")
        }
    }

    for path in paths {
        let url = URL(fileURLWithPath: path)
        let filename = url.lastPathComponent
        let data = try Data(contentsOf: url)
        let mimetype = mimeType(for: path)

        body.append("--\(boundary)\r\n")
        body.append("Content-Disposition: form-data; name=\"\(filePathKey)\"; 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
}

/// Create boundary string for multipart/form-data request
///
/// - returns:            The boundary string that consists of "Boundary-" followed by a UUID string.

private func generateBoundaryString() -> String {
    return "Boundary-\(UUID().uuidString)"
}

/// Determine mime type on the basis of extension of a file.
///
/// This requires `import MobileCoreServices`.
///
/// - parameter path:         The path of the file for which we are going to determine the mime type.
///
/// - returns:                Returns the mime type if successful. Returns `application/octet-stream` if unable to determine mime type.

private func mimeType(for path: String) -> String {
    let url = URL(fileURLWithPath: path)
    let pathExtension = url.pathExtension

    if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension as NSString, nil)?.takeRetainedValue() {
        if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() {
            return mimetype as String
        }
    }
    return "application/octet-stream"
}

와:

extension Data {

    /// Append string to Data
    ///
    /// Rather than littering my code with calls to `data(using: .utf8)` to convert `String` values to `Data`, this wraps it in a nice convenient little extension to Data. This defaults to converting using UTF-8.
    ///
    /// - parameter string:       The string to be added to the `Data`.

    mutating func append(_ string: String, using encoding: String.Encoding = .utf8) {
        if let data = string.data(using: encoding) {
            append(data)
        }
    }
}

이 모든 것이 완료되었으므로 이제이 요청을 제출해야합니다. 나는 이것이 비동기 적으로 수행되는 것이 좋습니다. 예를 들어를 사용 URLSession하면 다음과 같이 할 수 있습니다.

let request: URLRequest

do {
    request = try createRequest(userid: userid, password: password, email: email)
} catch {
    print(error)
    return
}

let task = URLSession.shared.dataTask(with: request) { data, response, error in
    guard let data = data, error == nil else {
        // handle error here
        print(error ?? "Unknown error")
        return
    }

    // parse `data` here, then parse it

    // note, if you want to update the UI, make sure to dispatch that to the main queue, e.g.:
    //
    // DispatchQueue.main.async {
    //     // update your UI and model objects here
    // }
}
task.resume()

Swift 2 변환 의 경우이 답변의 이전 개정판을 참조하십시오 .

---

AlamoFire는 이제 Multipart를 지원합니다.

https://github.com/Alamofire/Alamofire#uploading-multipartformdata

다음은 AlamoFire에서 Multipart를 사용하는 방법을 다루는 샘플 프로젝트가 포함 된 블로그 게시물입니다.

http://www.thorntech.com/2015/07/4-essential-swift-networking-tools-for-working-with-rest-apis/

관련 코드는 다음과 같을 수 있습니다 (AlamoFire 및 SwiftyJSON을 사용한다고 가정).

func createMultipart(image: UIImage, callback: Bool -> Void){
    // use SwiftyJSON to convert a dictionary to JSON
    var parameterJSON = JSON([
        "id_user": "test"
    ])
    // JSON stringify
    let parameterString = parameterJSON.rawString(encoding: NSUTF8StringEncoding, options: nil)
    let jsonParameterData = parameterString!.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
    // convert image to binary
    let imageData = UIImageJPEGRepresentation(image, 0.7)
    // upload is part of AlamoFire
    upload(
        .POST,
        URLString: "http://httpbin.org/post",
        multipartFormData: { multipartFormData in
            // fileData: puts it in "files"
            multipartFormData.appendBodyPart(fileData: jsonParameterData!, name: "goesIntoFile", fileName: "json.txt", mimeType: "application/json")
            multipartFormData.appendBodyPart(fileData: imageData, name: "file", fileName: "iosFile.jpg", mimeType: "image/jpg")
            // data: puts it in "form"
            multipartFormData.appendBodyPart(data: jsonParameterData!, name: "goesIntoForm")
        },
        encodingCompletion: { encodingResult in
            switch encodingResult {
            case .Success(let upload, _, _):
                upload.responseJSON { request, response, data, error in
                    let json = JSON(data!)
                    println("json:: \(json)")
                    callback(true)
                }
            case .Failure(let encodingError):
                callback(false)
            }
        }
    )
}

let fotoImage = UIImage(named: "foto")
    createMultipart(fotoImage!, callback: { success in
    if success { }
})

---

Thank you @Rob, your code is working fine, but in my case, I am retriving image from gallary and taking name of the image by using code:

let filename = url.lastPathComponent

But this code, displaying image extension as .JPG (in capital letter), but server not accepting extensions in captital letter, so i changed my code as:

 let filename =  (path.lastPathComponent as NSString).lowercaseString

and now my code is working fine.

Thank you :)

참고URL : https://stackoverflow.com/questions/26162616/upload-image-with-parameters-in-swift