在iOS Swift中使用Alamofire使用MultipartFormData发送POST参数

时间：2015-08-11 18:16:21

标签： ios swift http alamofire

我第一次使用Alamofire。我使用的是最新版本Alamofire 1.3.1。我想在一次API调用中发送一个图像，一个视频和一些POST参数。我正在使用多部分表单数据。多部分模块正在运行。发送额外的POST参数params时遇到问题。以下是我的代码。 ＆＃34; PARAMS＆＃34;是包含额外参数的字典？如何在请求中附加这些POST参数。请帮忙

        var fullUrl :String = Constants.BASE_URL + "/api/CompleteChallenge"
         var params = [
        "authKey": Constants.AuthKey,
        "idUserChallenge": "16",
        "comment": "",
        "photo": imagePath,
        "video": videoPath,
        "latitude": "1",
        "longitude": "1",
        "location": "india"
    ]

    let imagePathUrl = NSURL(fileURLWithPath: imagePath!)
    let videoPathUrl = NSURL(fileURLWithPath: videoPath!)

        Alamofire.upload(
        .POST,
        URLString: fullUrl, // http://httpbin.org/post
        multipartFormData: { multipartFormData in
            multipartFormData.appendBodyPart(fileURL: imagePathUrl!, name: "photo")
            multipartFormData.appendBodyPart(fileURL: videoPathUrl!, name: "video")
        },
        encodingCompletion: { encodingResult in
            switch encodingResult {
            case .Success(let upload, _, _):
                upload.responseJSON { request, response, JSON, error in

                  }
                }
            case .Failure(let encodingError):

            }
        }
    )

11 个答案:

答案 0 :(得分：71)

我终于找到了解决方案:)。

我们可以将请求中的数据作为multipartformdata附加。

以下是我的代码。

  Alamofire.upload(
        .POST,
        URLString: fullUrl, // http://httpbin.org/post
        multipartFormData: { multipartFormData in
            multipartFormData.appendBodyPart(fileURL: imagePathUrl!, name: "photo")
            multipartFormData.appendBodyPart(fileURL: videoPathUrl!, name: "video")
            multipartFormData.appendBodyPart(data: Constants.AuthKey.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"authKey")
            multipartFormData.appendBodyPart(data: "\(16)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"idUserChallenge")
            multipartFormData.appendBodyPart(data: "comment".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"comment")
            multipartFormData.appendBodyPart(data:"\(0.00)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"latitude")
            multipartFormData.appendBodyPart(data:"\(0.00)".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"longitude")
            multipartFormData.appendBodyPart(data:"India".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"location")
        },
        encodingCompletion: { encodingResult in
            switch encodingResult {
            case .Success(let upload, _, _):
                upload.responseJSON { request, response, JSON, error in


                }
            case .Failure(let encodingError):

            }
        }
    )

编辑1：对于那些试图发送数组而不是float，int或string的人来说，他们可以在Json String中转换他们的数组或任何类型的数据结构，传递这个JSON字符串作为普通字符串。并在后端解析此json字符串以获取原始数组

答案 1 :(得分：22)

在Alamofire 4中，添加文件数据>之前添加正文数据非常重要！

std::cout

答案 2 :(得分：17)

这就是我解决问题的方法

let parameters = [
            "station_id" :        "1000",
            "title":      "Murat Akdeniz",
            "body":        "xxxxxx"]

let imgData = UIImageJPEGRepresentation(UIImage(named: "1.png")!,1)



    Alamofire.upload(
        multipartFormData: { MultipartFormData in
        //    multipartFormData.append(imageData, withName: "user", fileName: "user.jpg", mimeType: "image/jpeg")

            for (key, value) in parameters {
                MultipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }

        MultipartFormData.append(UIImageJPEGRepresentation(UIImage(named: "1.png")!, 1)!, withName: "photos[1]", fileName: "swift_file.jpeg", mimeType: "image/jpeg")
        MultipartFormData.append(UIImageJPEGRepresentation(UIImage(named: "1.png")!, 1)!, withName: "photos[2]", fileName: "swift_file.jpeg", mimeType: "image/jpeg")


    }, to: "http://platform.twitone.com/station/add-feedback") { (result) in

        switch result {
        case .success(let upload, _, _):

            upload.responseJSON { response in
                print(response.result.value)
            }

        case .failure(let encodingError): break
            print(encodingError)
        }


    }

答案 3 :(得分：8)

Swift 3 / Alamofire 4.0 （accepted answer的附录）

要附加到Swift 3 / Alamofire 4.0中的multipartFormData，请使用MultipartFormData的以下方法：

public func append(_ data: Data, withName name: String) { /* ... */ }

并且，要将String转换为Data，data(using:)方法String。如，

multipartFormData.append("comment".data(using: .utf8)!, withName: "comment")

答案 4 :(得分：3)

在Swift 3.x中，对于带参数的上传图片，我们可以使用下面的alamofire上传方法 - 

static func uploadImageData(inputUrl:String,parameters:[String:Any],imageName: String,imageFile : UIImage,completion:@escaping(_:Any)->Void) {

        let imageData = UIImageJPEGRepresentation(imageFile , 0.5)

        Alamofire.upload(multipartFormData: { (multipartFormData) in

            multipartFormData.append(imageData!, withName: imageName, fileName: "swift_file\(arc4random_uniform(100)).jpeg", mimeType: "image/jpeg")

            for key in parameters.keys{
                let name = String(key)
                if let val = parameters[name!] as? String{
                    multipartFormData.append(val.data(using: .utf8)!, withName: name!)
                }
            }
        }, to:inputUrl)
        { (result) in
            switch result {
            case .success(let upload, _, _):

                upload.uploadProgress(closure: { (Progress) in
                })

                upload.responseJSON { response in

                    if let JSON = response.result.value {
                        completion(JSON)
                    }else{
                        completion(nilValue)
                    }
                }

            case .failure(let encodingError):
                completion(nilValue)
            }

        }

    }
  

注意：此外，如果我们的参数是键对数组，那么我们可以   使用

 var arrayOfKeyPairs = [[String:Any]]()
 let json = try? JSONSerialization.data(withJSONObject: arrayOfKeyPairs, options: [.prettyPrinted])
 let jsonPresentation = String(data: json!, encoding: .utf8)

答案 5 :(得分：3)

对于Swift 4.2 / Alamofire 4.7.3 

Alamofire.upload(multipartFormData: { multipart in
    multipart.append(fileData, withName: "payload", fileName: "someFile.jpg", mimeType: "image/jpeg")
    multipart.append("comment".data(using: .utf8)!, withName :"comment")
}, to: "endPointURL", method: .post, headers: nil) { encodingResult in
    switch encodingResult {
    case .success(let upload, _, _):
        upload.response { answer in
            print("statusCode: \(answer.response?.statusCode)")
        }
        upload.uploadProgress { progress in
            //call progress callback here if you need it
        }
    case .failure(let encodingError):
        print("multipart upload encodingError: \(encodingError)")
    }
}

此外，您还可以查看CodyFire lib，它使用Codable对所有内容进行API调用变得更加容易。 使用CodyFire进行多部分通话的示例

//Declare your multipart payload model
struct MyPayload: MultipartPayload {
    var attachment: Attachment //or you could use just Data instead
    var comment: String
}

// Prepare payload for request
let imageAttachment = Attachment(data: UIImage(named: "cat")!.jpeg(.high)!,
                                 fileName: "cat.jpg",
                                 mimeType: .jpg)
let payload = MyPayload(attachment: imageAttachment, comment: "Some text")

//Send request easily
APIRequest("endpoint", payload: payload)
    .method(.post)
    .desiredStatus(.created) //201 CREATED
    .onError { error in
        switch error.code {
        case .notFound: print("Not found")
        default: print("Another error: " + error.description)
        }
    }.onSuccess { result in
        print("here is your decoded result")
    }
//Btw normally it should be wrapped into an extension
//so it should look even easier API.some.upload(payload).onError{}.onSuccess{}

您可以查看lib's readme

中的所有示例

答案 6 :(得分：1)

Alamofire 5及更高版本 

AF.upload(multipartFormData: { multipartFormData in
    multipartFormData.append(Data("one".utf8), withName: "one")
    multipartFormData.append(Data("two".utf8), withName: "two")
}, 
to: "https://httpbin.org/post").responseDecodable(of: MultipartResponse.self) { response in
        debugPrint(response)
}

文档链接：multipart upload

答案 7 :(得分：0)

for alamofire 4使用此.. 

        Alamofire.upload(multipartFormData: { (multipartFormData) in

            multipartFormData.append(fileUrl, withName: "video")
       //fileUrl is your file path in iOS device and withName is parameter name

        }, to:"http://to_your_url_path")
        { (result) in
            switch result {
            case .success(let upload, _ , _):

                upload.uploadProgress(closure: { (progress) in

                    print("uploding")
                })

                upload.responseJSON { response in

                   print("done")

                }

            case .failure(let encodingError):
                print("failed")
                print(encodingError)

            }
        }

答案 8 :(得分：0)

好吧，由于Multipart Form Data旨在用于二进制（和文本）数据传输，我认为将编码的数据发送到String上是不好的做法。

另一个缺点是不可能发送更复杂的参数，如JSON。

尽管如此，更好的选择是以二进制形式发送所有数据，即数据。

说我需要发送此数据

for group in tree.iterfind('.//group'):
    for groupfilter in group.iterfind('.//groupfilter'):
        groupname = group.get('name')
        expression = groupfilter.get('expression', '')  # default: empty string

        print([groupname, expression])

...与用户的图片一起：

let name = "Arthur"
let userIDs = [1,2,3]
let usedAge = 20

为此，我将该文本数据转换为JSON，然后转换为二进制文件与图像：

let image = UIImage(named: "img")!

然后，最后通过Multipart Form Data请求发送它：

//Convert image to binary
let data = UIImagePNGRepresentation(image)!

//Convert text data to binary
let dict: Dictionary<String, Any> = ["name": name, "userIDs": userIDs, "usedAge": usedAge]
userData = try? JSONSerialization.data(withJSONObject: dict)

答案 9 :(得分：0)

Swift 5 ，将@Ankush的 Alamofire 代码更新为

     var fullUrl = "http://httpbin.org/post" // for example

           Alamofire.upload(multipartFormData: { (multipartFormData) in
                multipartFormData.append( imagePathUrl! , withName: "photo")
                multipartFormData.append( videoPathUrl!,  withName: "video")
                multipartFormData.append(Constants.AuthKey.data(using: .utf8, allowLossyConversion: false)!, withName: "authKey")
                multipartFormData.append("16".data(using: .utf8, allowLossyConversion: false)!, withName: "idUserChallenge")
                multipartFormData.append("111".data(using: .utf8, allowLossyConversion: false)!, withName: "authKey")
                multipartFormData.append("comment".data(using: .utf8, allowLossyConversion: false)!, withName: "comment")
                multipartFormData.append("0.00".data(using: .utf8, allowLossyConversion: false)!, withName: "latitude")
                multipartFormData.append("0.00".data(using: .utf8, allowLossyConversion: false)!, withName: "longitude")
                multipartFormData.append("India".data(using: .utf8, allowLossyConversion: false)!, withName: "location")

            }, to: fullUrl, method: .post) { (encodingResult) in
                switch encodingResult {
                case .success(request: let upload, streamingFromDisk: _, streamFileURL: _):
                    upload.responseJSON { (response) in   // do sth     }
                case .failure(let encodingError):
                    ()
                }
            }

答案 10 :(得分：-1)

func funcationname()
{

    var parameters = [String:String]()
    let apiToken = "Bearer \(UserDefaults.standard.string(forKey: "vAuthToken")!)"
    let headers = ["Vauthtoken":apiToken]
    let mobile = "\(ApiUtillity.sharedInstance.getUserData(key: "mobile"))"
    parameters = ["first_name":First_name,"last_name":last_name,"email":Email,"mobile_no":mobile]

    print(parameters)
    ApiUtillity.sharedInstance.showSVProgressHUD(text: "Loading...")
    let URL1 = ApiUtillity.sharedInstance.API(Join: "user/update_profile")
    let url = URL(string: URL1.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!)
    var urlRequest = URLRequest(url: url!)
    urlRequest.httpMethod = "POST"
    urlRequest.allHTTPHeaderFields = headers
    Alamofire.upload(multipartFormData: { (multipartFormData) in

        multipartFormData.append(self.imageData_pf_pic, withName: "profile_image", fileName: "image.jpg", mimeType: "image/jpg")


        for (key, value) in parameters {

            multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
        }

    }, with: urlRequest) { (encodingResult) in

        switch encodingResult {
        case .success(let upload, _, _):
            upload.responseJSON { response in
                if let JSON = response.result.value {
                    print("JSON: \(JSON)")
                    let status = (JSON as AnyObject).value(forKey: "status") as! Int
                    let sts = Int(status)
                    if sts == 200
                    {
                        ApiUtillity.sharedInstance.dismissSVProgressHUD()
                        let UserData = ((JSON as AnyObject).value(forKey: "data") as! NSDictionary)
                        ApiUtillity.sharedInstance.setUserData(data: UserData)


                    }
                    else
                    {
                        ApiUtillity.sharedInstance.dismissSVProgressHUD()

                        let ErrorDic:NSDictionary = (JSON as AnyObject).value(forKey: "message") as! NSDictionary

                        let Errormobile_no = ErrorDic.value(forKey: "mobile_no") as? String
                        let Erroremail = ErrorDic.value(forKey: "email") as? String

                        if Errormobile_no?.count == nil
                        {}
                        else
                        {
                            ApiUtillity.sharedInstance.dismissSVProgressHUDWithError(error: Errormobile_no!)
                        }
                        if Erroremail?.count == nil
                        {}
                        else
                        {
                            ApiUtillity.sharedInstance.dismissSVProgressHUDWithError(error: Erroremail!)
                        }
                    }

                }

            }

        case .failure(let encodingError):
            ApiUtillity.sharedInstance.dismissSVProgressHUD()
            print(encodingError)
        }

    }
}
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