Question

我正在使用alamofire将图像发送到服务器。如果参数;

    let parameters: Parameters = [
        "userID": "1",
        "acToken": "acToken"
    ]

工作但参数;

    let parameters: Parameters = [
        "userID": userID,
        "acToken": acToken ?? ""
    ]

不工作。 error = libc ++ abi.dylib：以NSException类型的未捕获异常终止

我正在使用swift4，alamofire 4，Xcode 9.2

我的上传方式：

func profilePhotoUpload(){
        let defaults = UserDefaults.standard
        let userID = defaults.integer(forKey: "userID")
        let acToken = defaults.string(forKey: "acToken")
        print("\(userID) - \(acToken ?? "")")

            // add UI related changes here
            let image = self.profilePhoto.image

            let parameters: Parameters = [
                "userID": userID,
                "acToken": acToken ?? ""
            ]

            Alamofire.upload(multipartFormData: { (multipartFormData) in
                multipartFormData.append(UIImageJPEGRepresentation(image!, 1)!, withName: "photo_path", fileName: "swift_file.jpeg", mimeType: "image/jpeg")
                for (key, value) in parameters {
                    multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
                }
            }, to:"http......")
            { (result) in
                switch result {
                case .success(let upload, _, _):

                    upload.uploadProgress(closure: { (progress) in
                        //Print progress
                    })

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

                case .failure(let encodingError):
                    print(encodingError.localizedDescription)
                    break
                    //print encodingError.description
                }
            }
    }

错误日志：

VoiceStage [33099：1632858] - [ NSCFNumber dataUsingEncoding：]：无法识别的选择器发送到实例0xb000000000000013 2018-03-26 16：20：16.686009 + 0300 VoiceStage [33099：1632858] ***由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：' - [__ NSCFNumber dataUsingEncoding：]：无法识别的选择器发送到实例0xb000000000000013' ***第一次抛出调用堆栈：（ 0 CoreFoundation 0x000000010520f12b __exceptionPreprocess + 171 1 libobjc.A.dylib 0x00000001048a3f41 objc_exception_throw + 48 2 CoreFoundation 0x0000000105290024 - [NSObject（NSObject）doesNotRecognizeSelector：] + 132 3 CoreFoundation 0x0000000105191f78 ___ forwarding _ + 1432 4 CoreFoundation 0x0000000105191958 _CF_forwarding_prep_0 + 120 5 VoiceStage 0x0000000103d09a7a T010VoiceStage27ProfileDetailViewControllerC18profilePhotoUploadyyFy9Alamofire17MultipartFormDataCcfU + 1354 6 VoiceStage 0x0000000103d0f9a4 _T010VoiceStage27ProfileDetailViewControllerC18profilePhotoUploadyyFy9Alamofire17MultipartFormDataCcfU_TA + 84 7 Alamofire 0x000000010415a994 _T09Alamofire14SessionManagerC6uploadyyAA17MultipartFormDataCc09multipartfG0_s6UInt64V14usingThresholdAA21URLRequestConvertible_p4withyAC0efG14EncodingResultOcSg18encodingCompletiontFyycfU_ + 212 8 Alamofire 0x000000010415e2bc _T09Alamofire14SessionManagerC6uploadyyAA17MultipartFormDataCc09multipartfG0_s6UInt64V14usingThresholdAA21URLRequestConvertible_p4withyAC0efG14EncodingResultOcSg18encodingCompletiontFyycfU_TA + 156 9 Alamofire 0x00000001040e0599 _T0Ix_IyB_TR + 41 10 libdispatch.dylib 0x000000010a10d2f7 _dispatch_call_block_and_release + 12 11 libdispatch.dylib 0x000000010a10e33d _dispatch_client_callout + 8 12 libdispatch.dylib 0x000000010a11a3a2 _dispatch_root_queue_drain + 1444 13 libdispatch.dylib 0x000000010a119da0 _dispatch_worker_thread3 + 132 14 libsystem_pthread.dylib 0x000000010a5d41ca _pthread_wqthread + 1387 15 libsystem_pthread.dylib 0x000000010a5d3c4d start_wqthread + 13 ） libc ++ abi.dylib：以NSException类型的未捕获异常终止（lldb）

Answer 1

-[NSCFNumber dataUsingEncoding:]: unrecognized selector sent to instance

错误消息说：我试图调用方法dataUsingEncoding:（Objective-C版本1），即data(using:)对象上的Swift NSNumber。我不能，我坠毁了。所以这意味着在某些时候你认为你正在使用String对象，而实际上它是Number对象（或从Number转换为Int）。

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

您认为value会回复data(using:)。事实上，它应该更多(value as String)。管理更多案例将是测试value的类。如果它是一个String对象，请使用data(using:)，如果它已经是Data对象，只需放置value。

在伪代码中：

let valueToSet;
if value is a String Object {
   valueToSet = (value as String).data(using:.utf8)
} else if value is a Data Object {
   valueToSet = value
} else if value is a Number Object {
   valueToSet = String(initWithNumber:value).data(using:.utf8)
} else ... ?

    multipartFormData.append(valueToSet, withName: key)

你也写道：

let parameters: Parameters = [
    "userID": userID,
    "acToken": acToken ?? ""
]

所以关于错误的所有这些解释： userID不是字符串，或acToken不是字符串而是Int。根据名称，我倾向于说userID是Int。

Answer 2

在我的情况下，参数是不同的类型，我将其自定义为字符串 `let param = [ “ user_id”：“（UserDefaults.standard.object（forKey：” id“）！）”， “名称”：名称， “ birth_date”：birthDate， “ stage”：“（ageStageId）”， “ type”：“（genderId）”， ]为[String：任何] 打印（参数） Alamofire.upload（multipartFormData： { （multipartFormData）在如果image.jpegData（compressionQuality：0.1）！= nil { multipartFormData.append（image.jpegData（compressionQuality：0.1）!, withName：“ img”，fileName：“ file.jpeg”，mimeType：“ image / jpeg”） }

            for (key, value) in param
            {
                multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
            }
            print(param)
    }, to:url,headers:nil)
    { (result) in
        switch result {
        case .success(let upload,_,_ ):
            upload.uploadProgress(closure: { (progress) in

                print("//success connection and uploaded image")
            })
            upload.responseJSON
                { response in
                    if response.result.isSuccess{


                    }
            }

        case .failure( _):


            break
        }
    }` i hope this help some one

libc ++ abi.dylib：以NSException类型的未捕获异常终止Alamofire

2 个答案: