Question

我需要将zip文件发送到服务器端。

我的要求是我需要在后台工作

let configuration = URLSessionConfiguration.default
    configuration.timeoutIntervalForRequest = 10 // seconds
    alamoFireManager = Alamofire.SessionManager(configuration: configuration)

appDeligate.log.debug("request was sended")

    alamoFireManager.upload(deligate.data!,
                            to: deligate.url,
                            method: .post,
                            headers: headers)
        .uploadProgress(closure: {
            progress in
            print("Upload Progress: \(progress.fractionCompleted)")
        })
        .validate()
        .responseJSON {}

现在它正常工作，但我需要在后台执行此操作。根据Alamofire README doc

https://github.com/Alamofire/Alamofire

它说

使用后台配置创建会话管理器

让configuration = URLSessionConfiguration.background（withIdentifier：＆＃34; com.example.app.background＆＃34;）

让sessionManager = Alamofire.SessionManager（配置：配置）

我将配置更改为对应的后台配置

现在看起来像这样

let configuration = URLSessionConfiguration.background(withIdentifier: "com.room.myApp")
configuration.timeoutIntervalForRequest = 10 // seconds
    alamoFireManager = Alamofire.SessionManager(configuration: configuration)

alamoFireManager.upload(deligate.data!,
                            to: deligate.url,
                            method: .post,
                            headers: headers)
        .uploadProgress(closure: {
            progress in
            print("Upload Progress: \(progress.fractionCompleted)")
        })
        .validate()
        .responseJSON {}

我收到错误

*** Terminating app due to uncaught exception 'NSGenericException', reason: 'Upload tasks from NSData are not supported in background sessions.'
*** First throw call stack:
(0x18ec511b8 0x18d68855c 0x18f33808c 0x18f33796c 0x18f336e68  0x100ef9218 0x100f05dc8 0x18f336dc8 0x18f3378cc 0x100255890 0x1002518e8  0x100234200 0x100234448 0x100ef9218 0x100f05dc8 0x100233fc4 0x100255290  0x10029d238 0x10029ae4c 0x10029ac34 0x10006dd78 0x100071044 0x100082708  0x10002b310 0x100ef9258 0x100ef9218 0x100f0726c 0x100f08e2c 0x100f08b78  0x18dce32a0 0x18dce2d8c)
libc++abi.dylib: terminating with uncaught exception of type NSException

我做错了什么？

是我方还是自由方面的问题？

随意询问

修改

有发送流程

我有如何创建zip文件

internal func madeRequest() {
    DispatchQueue.global().async {
        if self.createZipPhotoDir() {
            self.appDeligate.log.debug("zip dir was created")
            self.serverConnection.makeServerRequest()
        } else {
            self.appDeligate.log.error("can NOT execute createZipPhotoDir()")
        }
    }
}

private func createZipPhotoDir() -> Bool {
    let withContentsOfDirectory: String! = UtilDirectory.pathToMyCurrentAvatarDir.tweak() // "/var/mobile/Containers/Data/Application/739A895E-7BCA-47A8-911F-70FBC812CEB3/Documents/default@domein.com/AvatarPackage/name/"
    let atPath: String! = UtilDirectory.tempZipPath.tweak() // "/var/mobile/Containers/Data/Application/739A895E-7BCA-47A8-911F-70FBC812CEB3/Documents/default@domein.com/tmpZipDir.zip"

    return SSZipArchive.createZipFile(atPath: atPath, withContentsOfDirectory: withContentsOfDirectory)
}

zip文件正在创建

然后我发出服务器请求

required init() {
    configureAlamofireManager()
}

private func configureAlamofireManager() {
    let configuration = URLSessionConfiguration.background(withIdentifier: "com.fittingroom.newtimezone.Fitzz")
    alamoFireManager = Alamofire.SessionManager(configuration: configuration)
}

internal func makeServerRequest() {
    appDeligate.log.debug("request was sended")

    alamoFireManager.upload(deligate.data!,
                            to: deligate.url,
                            method: .post,
                            headers: headers)
        .uploadProgress(closure: {
            progress in
            print("Upload Progress: \(progress.fractionCompleted)")
        })
        .validate()
        .responseJSON {
            [weak self]
            response in

            self?.appDeligate.log.debug("response : \(response)")
            self?.appDeligate.log.debug(String(describing: response.timeline))

            switch response.result {
            case .success(let value):
                self?.appDeligate.log.debug("succes in server connection response")
                let result = self?.getStatusCodeAndData(json: JSON(value))
                self?.deligate.onSuccess(statusCode: result?.statusCode, data: result?.data)
            case .failure(let error):
                self?.appDeligate.log.error("error in UploadingRequest : \(error)")
                self?.deligate.onError()
            }
    }
}

我有一种方法可以获取数据

internal var data: Data {
    var data = Data()
    let filePath = UtilDirectory.tempZipPath.tweak()

    if let result = UtilFile.exists(path: filePath), result.isFileExist == true, result.whatIsIt == .file {
        if let fileData = FileManager.default.contents(atPath: filePath) {
            data = fileData
            appDeligate.log.debug("*** DATA : \(data) ***")
        } else {
            print("Could not parse the file")
        }

    } else {
        appDeligate.log.error("some ERROR here: file not exist")
    }

    return data
}

Answer 1

来自Background Transfer Considerations ：

仅支持从文件上传任务（从数据对象上传或在程序退出后流将失败）。

这意味着它是NSURLSession的限制 - 您需要从文件上传然后尝试用文件解决其他错误

<强>更新

appDeligate.log.debug("request was sended")

let tempZipFilePath = UtilDirectory.tempZipPath.tweak()

alamoFireManager.upload(tempZipFilePath,
                        to: deligate.url,
                        method: .post,
                        headers: headers)

Answer 2

您是否看到此部分Open Radars：

打开雷达

以下雷达对当前Alamofire的实施有一定影响。

rdar：// 26870455 - 后台网址会话配置在模拟器中不起作用

Answer 3

使用下面的代码一次，对我有用

导入Alamofire

var sessionManager: Alamofire.SessionManager
var backgroundSessionManager: Alamofire.SessionManager 
self.sessionManager = Alamofire.SessionManager(configuration: URLSessionConfiguration.default)
self.backgroundSessionManager = Alamofire.SessionManager(configuration: URLSessionConfiguration.background(withIdentifier: "com.youApp.identifier.backgroundtransfer"))


backgroundSessionManager.upload(multipartFormData: blockFormData!, usingThreshold: UInt64.init(), to: url, method: .post, headers: APIManager.headers(), encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
    upload.uploadProgress {
        (progress) in
        let p = progress.fractionCompleted * 100
        uploadProgress(p)
    }
    upload.responseJSON { response in
        switch(response.result) {
        case .success(let JSON):
            DispatchQueue.main.async {
                    print(JSON)
            }
        case .failure(let error):
            DispatchQueue.main.async {
                print(error)
            }
        }
    }
case .failure(let error):
    DispatchQueue.main.async {
        print(error)
    }
}
})

如何执行alamofire后台上传请求？

3 个答案: