On the server side is a PHP web service that accepts post parameters userid, authenticationKey, some title, some comments and a file
在服务器端是一个PHP Web服务，它接受post参数userid，authenticationKey，一些标题，一些注释和一个文件
I am recording an audio on the iPhone and uploading to this service. The code works fine if I use NSURLSessionUploadTask and construct a multi part file upload request with DefaultSessionConfiguration
我正在iPhone上录制音频并上传到此服务。如果我使用NSURLSessionUploadTask并使用DefaultSessionConfiguration构造多部分文件上载请求，则代码可以正常工作
I want to however upload the file using Background Session configuration.
我想使用后台会话配置上传文件。
I could not find any sample code for background file upload (along with some parameters) in the post request. I am using Swift and iOS 8
我在post请求中找不到任何后台文件上传示例代码（以及一些参数）。我正在使用Swift和iOS 8
Would appreciate your help.
非常感谢您的帮助。
Thanks. Sara
谢谢。萨拉
2 个解决方案
#1
0
You can either write the data to a file on disk and provide the upload body as a file URL or (IIRC) you can create an NSURLRequest object, set the bodyData property to an NSData blob, and use an NSURLDownload request. I'm not 100% certain that the latter approach works, though—you may have to provide the body as a body stream, which is kind of a pain in the backside.
您可以将数据写入磁盘上的文件并将上载主体作为文件URL提供，或者（IIRC）您可以创建NSURLRequest对象，将bodyData属性设置为NSData blob，并使用NSURLDownload请求。我不是百分之百确定后一种方法是有效的，但你可能必须提供身体作为身体流，这在背后是一种痛苦。
#2
0
I have successfully uploaded a file with extra form data (parameters) in the background. This was done by creating the full body request manually and saving that blob of bytes as a file.
我已在后台成功上传了包含额外表单数据（参数）的文件。这是通过手动创建完整正文请求并将该blob字节保存为文件来完成的。
Then I could start an uploadTask that would upload that file even when the app went to the background.
然后，即使应用程序进入后台，我也可以启动uploadTask来上传该文件。
After upload, I delete the file.
上传后，我删除该文件。
#1
0
You can either write the data to a file on disk and provide the upload body as a file URL or (IIRC) you can create an NSURLRequest object, set the bodyData property to an NSData blob, and use an NSURLDownload request. I'm not 100% certain that the latter approach works, though—you may have to provide the body as a body stream, which is kind of a pain in the backside.
您可以将数据写入磁盘上的文件并将上载主体作为文件URL提供，或者（IIRC）您可以创建NSURLRequest对象，将bodyData属性设置为NSData blob，并使用NSURLDownload请求。我不是百分之百确定后一种方法是有效的，但你可能必须提供身体作为身体流，这在背后是一种痛苦。
#2
0
I have successfully uploaded a file with extra form data (parameters) in the background. This was done by creating the full body request manually and saving that blob of bytes as a file.
我已在后台成功上传了包含额外表单数据（参数）的文件。这是通过手动创建完整正文请求并将该blob字节保存为文件来完成的。
Then I could start an uploadTask that would upload that file even when the app went to the background.
然后，即使应用程序进入后台，我也可以启动uploadTask来上传该文件。
After upload, I delete the file.
上传后，我删除该文件。