Question

我正在创建一个Internet Speed测试应用程序，似乎无法将zip文件上传到ftp服务器。它是一个开放的服务器。我希望能够上传文件并显示进度。

func URLSession(session: NSURLSession, task: NSURLSessionTask, didSendBodyData bytesSent: Int64, totalBytesSent: Int64, totalBytesExpectedToSend: Int64)无效。

import UIKit
import Foundation

class Upload: UIViewController, NSURLSessionTaskDelegate, NSURLSessionDataDelegate, NSURLSessionDelegate {

    let url: NSURL = NSURL(string: "ftp://speedtest.tele2.net/upload")!
    let path = NSBundle.mainBundle().pathForResource("2MB", ofType: "zip")

    func Test() {
        let data: NSData = NSData(contentsOfFile: path!)!

        let request: NSMutableURLRequest = NSMutableURLRequest(URL: url)
        request.HTTPMethod = "POST"
        request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData
        request.timeoutInterval = 10.0
        request.HTTPBody = data

        let session: NSURLSession = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration(), delegate: self, delegateQueue: NSOperationQueue.mainQueue())
        let task: NSURLSessionUploadTask = session.uploadTaskWithRequest(request, fromData: data)

        task.resume()
    }

    func URLSession(session: NSURLSession, task: NSURLSessionTask, didSendBodyData bytesSent: Int64, totalBytesSent: Int64, totalBytesExpectedToSend: Int64) {
        print("\(totalBytesSent)/\(totalBytesExpectedToSend)")
    }

    func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {
        print(error)
    }

    func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
        completionHandler(NSURLSessionResponseDisposition.Allow)
    }

    func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData data: NSData) {
        //
    }

}

Answer 1

您是否正确阅读了文档？如果您查看此方法的文档，

   func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {

此方法是可选的，除非您需要支持（相对而言）   模糊的）multipart / x-mixed-replace内容类型。有了这个内容   类型，服务器发送一系列部件，每个部件都是为了   替换上一部分。会话调用此方法   每个部分的开头，然后你应该显示，丢弃或   否则，视情况处理上一部分。

如果您不提供此委托方法，则会话始终允许   要继续的任务。

此处https://developer.apple.com/library/prerelease/ios/documentation/Foundation/Reference/NSURLSessionDataDelegate_protocol/index.html#//apple_ref/occ/intfm/NSURLSessionDataDelegate/URLSession:dataTask:didReceiveResponse:completionHandler：

您可以简单地不实现此方法，或者必须允许进一步响应。

func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
    completionHandler(.Allow)
}

NSURLSession上传文件到服务器Swift

1 个答案: