Question

我在尝试从Web服务获取一些数据（JSON）时会发疯。

有人可以告诉我如何在此通话中添加用户名和密码验证吗？它不能像下面的代码。如果你有一些可以使用swift 3.0的代码，我会很乐意看到它。

func downloadData()
{
    let url = NSURL(string: "https://www.someurl.com")
    let request = NSMutableURLRequest(url: url! as URL)

    let task = URLSession.shared.dataTask(with: request as URLRequest) { data,response,error in
        guard error == nil && data != nil else
        {
            print("Error:",error!)
            return
        }

        let httpStatus = response as? HTTPURLResponse

        if httpStatus!.statusCode == 200
        {
            if data?.count != 0
            {
                let responseString = try! JSONSerialization.jsonObject(with: data!, options: .allowFragments) as! NSDictionary //because JSON data started with dictionary. Not an array
                let status = responseString["status"] as! String

                if status == "ok"
                {
                    print("Status is :", status)

                    //Ok, so far so good. Now let's get the data...
                }
                else
                {
                    print("Status is not Okay!")
                }
            }
            else
            {
                print("No data got from url!")
            }
        }
        else
        {
            print("error httpstatus code is :",httpStatus!.statusCode)
        }
    }
    task.resume()
}

Answer 1

这取决于您的网络服务，但您需要将这些值添加到Request。

例如，为标题添加值：

let request = NSMutableURLRequest(url: url! as URL)
request.addValue("An_Authentication_String", forHTTPHeaderField: "MyField")

或者您可能需要在Request：How to make HTTP Post request with JSON body in Swift

中添加正文

Answer 2

我的坏。我对这个有点太仓促了。它不是JSON，而是我回来的XML。所以这是具有基本身份验证的代码，如果有人想知道......

    let config = URLSessionConfiguration.default
    let userPasswordString = "myusername:mypassword"
    let userPasswordData = userPasswordString.data(using: String.Encoding.utf8)
    let base64EncodedCredential = userPasswordData!.base64EncodedString()
    let authString = "Basic \(base64EncodedCredential)"
    config.httpAdditionalHeaders = ["Authorization" : authString]
    let session = URLSession(configuration: config)

    let url = URL(string: "theWebServiceUrl")!
    var dataString = ""

    let task = session.dataTask(with: url, completionHandler: {
        (data, response, error) in

        if error != nil {
            print(error!.localizedDescription)
        } else {
             //this is the XML, now go to town with an XML parser
             dataString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) as! String
        }
    })
    task.resume()

带有基本身份验证的iOS swift Web服务调用

2 个答案: