xcode 如何执行alamofire后台上传请求？
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How to execute alamofire background upload request?
提问by Aleksey Timoshchenko
I need to send zip file to server side.
我需要将 zip 文件发送到服务器端。
There is my request which I need to work in background
有我需要在后台工作的请求
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 {}
Now it is work properly, but I need to execute this in background. According to the Alamofire README doc
现在它工作正常，但我需要在后台执行它。根据 Alamofire README 文档
https://github.com/Alamofire/Alamofire
https://github.com/Alamofire/Alamofire
it says
它说
Creating a Session Manager with Background Configuration
let configuration = URLSessionConfiguration.background(withIdentifier: "com.example.app.background")
let sessionManager = Alamofire.SessionManager(configuration: configuration)
使用后台配置创建会话管理器
让配置 = URLSessionConfiguration.background(withIdentifier: "com.example.app.background")
让 sessionManager = Alamofire.SessionManager（配置：配置）
I changed my configuration to correspond background configuration
我将我的配置更改为对应的后台配置
now it looks like this
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 {}
And I get error
我得到错误
*** 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
What am I doing wrong?
我究竟做错了什么？
Is it issue from my side or lib side?
是我这边还是lib这边的问题？
Feel free to ask
随意问
Edit
编辑
there is sending flow
有发送流
There is how I create zip file
我是如何创建 zip 文件的
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/[email protected]/AvatarPackage/name/"
let atPath: String! = UtilDirectory.tempZipPath.tweak() // "/var/mobile/Containers/Data/Application/739A895E-7BCA-47A8-911F-70FBC812CEB3/Documents/[email protected]/tmpZipDir.zip"
return SSZipArchive.createZipFile(atPath: atPath, withContentsOfDirectory: withContentsOfDirectory)
}
zip file is creating ok
zip 文件创建正常
Then I make server request
然后我提出服务器请求
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()
}
}
}
There is a way how I get data to send
有一种方法可以让我发送数据
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
}
采纳答案by muescha
from Background Transfer Considerations :
来自后台传输注意事项 ：
Only upload tasks from a file are supported (uploading from data objects or a stream will fail after the program exits).
仅支持从文件上传任务（从数据对象或流上传将在程序退出后失败）。
that means it is limitation from NSURLSession - you need you upload from a file and then try to solve the other error with file
这意味着它是 NSURLSession 的限制 - 您需要从文件上传，然后尝试使用文件解决其他错误
Update
更新
appDeligate.log.debug("request was sended")
let tempZipFilePath = UtilDirectory.tempZipPath.tweak()
alamoFireManager.upload(tempZipFilePath,
to: deligate.url,
method: .post,
headers: headers)
回答by muescha
did you see this section Open Radars:
你看到这个部分打开雷达：
Open Radars
The following radars have some effect on the current implementation of Alamofire.
rdar://26870455 - Background URL Session Configurations do not work in the simulator
打开雷达
以下雷达对 Alamofire 的当前实现有一些影响。
rdar://26870455 - 后台 URL 会话配置在模拟器中不起作用
