Comment définir Content-type dans Swift à l'aide de NSURLSession

Je veux définir le type de contenu dans mon code ci-dessous pour appeler l'api web.
Type de contenu sera application/json; charset=utf-8

let url = NSURL(string: "http:/api/jobmanagement/PlusContactAuthentication?email=\(usr)&userPwd=\(pwdCode)")

println("URL:  \(url)")

let task = NSURLSession.sharedSession().dataTaskWithURL(url!) {
    (data, response, error) in
    println(NSString(data: data, encoding: NSUTF8StringEncoding))
}

// task.setValue(<#value: AnyObject?#>, forKey: <#String#>)
task.resume()

source d'informationauteur dhaval shah

  1. 33

    Si vous souhaitez définir la Content-Type de la demande, vous pouvez créer votre propre NSMutableURLRequestfourniture de votre URL, indiquez le Content-Type - tête à l'aide setValue:forHTTPHeaderField: et puis le problème de la demande avec dataTaskWithRequest plutôt que dataTaskWithURL. Ainsi, dans Swift 2 vous pouvez régler la request.HTTPBody être que JSON et de préciser que c'est une requête POST:

    let request = NSMutableURLRequest(URL: url!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")  //the request is JSON
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Accept")        //the expected response is also JSON
request.HTTPMethod = "POST"
request.updateBasicAuthForUser("test", password: "password1")

let dictionary = ["email": usr, "userPwd": pwdCode]
request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(dictionary, options: [])

let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error in
    guard let data = data where error == nil else {
        print(error)                                                //some fundamental network error
        return
    }

    do {
        let responseObject = try NSJSONSerialization.JSONObjectWithData(data, options: [])
        print(responseObject)
    } catch let jsonError {
        print(jsonError)
        print(String(data: data, encoding: NSUTF8StringEncoding))   //often the `data` contains informative description of the nature of the error, so let's look at that, too
    }
}
task.resume()

    Dans Swift 3, l'équivalent de code est:

    var request = URLRequest(url: url!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")  //the request is JSON
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Accept")        //the expected response is also JSON
request.httpMethod = "POST"

let dictionary = ["email": usr, "userPwd": pwdCode]
request.httpBody = try! JSONSerialization.data(withJSONObject: dictionary)

let task = URLSession.shared.dataTask(with: request) { data, response, error in
    guard let data = data, error == nil else {
        print(error)                                 //some fundamental network error
        return
    }

    do {
        let responseObject = try JSONSerialization.jsonObject(with: data)
        print(responseObject)
    } catch let jsonError {
        print(jsonError)
        print(String(data: data, encoding: .utf8))   //often the `data` contains informative description of the nature of the error, so let's look at that, too
    }
}
task.resume()