How to POST JSON data using NSURLSession in swift

Question

I am stuck with the below code. How do I set the param and in post method?

let params:[String:Any] = [
        "email" : usr,
        "userPwd" : pwdCode]

let url = NSURL(string:"http://inspect.dev.cbre.eu/SyncServices/api/jobmanagement/PlusContactAuthentication")
let request = NSMutableURLRequest(URL: url!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")

request.HTTPBody = params<what should do for Json parameter>


let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
    data, response, error in

    if let httpResponse = response as? NSHTTPURLResponse {
        if httpResponse.statusCode != 200 {
            println("response was not 200: \(response)")
            return
        }
    }
    if error {
        println("error submitting request: \(error)")
        return
    }

    // handle the data of the successful response here
}
task.resume()

I think it's not clear what the problem is - could you be more specific? — Antonio
– Antonio, Commented Nov 20, 2014 at 10:16
Sorry for my language...I want to adjust a parameter <request.HTTPBody = params<what should do for Json parameter> for post method ..but i dont know how to do that?If you can edit my code and show it to me than it ll be good — dhaval shah
– dhaval shah, Commented Nov 20, 2014 at 10:52
Possible duplicate of How to post a JSON with new Apple Swift Language — Thales P
– Thales P, Commented Aug 10, 2016 at 23:13

Community · Accepted Answer · 2017-05-23 10:28:40Z

5

if I understand the question correctly

var configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
var session = NSURLSession(configuration: configuration)
var usr = "dsdd"
var pwdCode = "dsds"
let params:[String: AnyObject] = [
    "email" : usr,
    "userPwd" : pwdCode ]

let url = NSURL(string:"http://localhost:8300")
let request = NSMutableURLRequest(URL: url!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: NSJSONWritingOptions.allZeros, error: &err)

let task = session.dataTaskWithRequest(request) {
    data, response, error in

    if let httpResponse = response as? NSHTTPURLResponse {
        if httpResponse.statusCode != 200 {
            println("response was not 200: \(response)")
            return
        }
    }
    if (error != nil) {
        println("error submitting request: \(error)")
        return
    }

    // handle the data of the successful response here
    var result = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.allZeros, error: nil) as? NSDictionary
    println(result)
}
task.resume()

I would suggest using AFNetworking. See for example, Posting JSON data using AFNetworking 2.0.

edited May 23, 2017 at 10:28

CommunityBot

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answered Nov 22, 2014 at 9:02

surui

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4 Comments

user189804 Over a year ago

What does AFNetworking give you over NSURLSession? I used to use AFNetworking but NSURLSession seems remarkably similar to what it used to do.

surui Over a year ago

@AdamEberbach, AFNetworking (2.x) is built on top of NSURLSession to provide some abstractions that make your life easier. For example, it may parse the data as JSON (the headers in the response usually say the type of data). There are many other things; you can start from this tutorial raywenderlich.com/59255/afnetworking-2-0-tutorial and then visit the docs to see further usage. However, I agree that sometimes you don't need to bring the big guns if you don't need them :) -Another thing worth noting - If you want to target iOS 6 you might find AFNetworking to be your best option

Stefan Konno Over a year ago

This was so helpful, I battled with this issue for a good amount of time, finally got it right thanks to this answer.

Akash Raghani Over a year ago

your link is not for swift code its objective c code.please provide afnetworking link for swift code

Codetard · Accepted Answer · 2016-08-09 07:50:13Z

This is how you can set parameters and send a POST request, easy approach using Alamofire.

Swift 2.2

let URL = NSURL(string: "https://SOME_URL/web.send.json")!
let mutableURLRequest = NSMutableURLRequest(URL: URL)
mutableURLRequest.HTTPMethod = "POST"

let parameters = ["api_key": "______", "email_details": ["fromname": "______", "subject": "this is test email subject", "from": "[email protected]", "content": "<p> hi, this is a test email sent via Pepipost JSON API.</p>"], "recipients": ["_________"]]

do {
    mutableURLRequest.HTTPBody = try NSJSONSerialization.dataWithJSONObject(parameters, options: NSJSONWritingOptions())
} catch {
    // No-op
}

mutableURLRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")

Alamofire.request(mutableURLRequest)
    .responseJSON { response in
        print(response.request)  // original URL request
        print(response.response) // URL response
        print(response.data)     // server data
        print(response.result)   // result of response serialization

        if let JSON = response.result.value {
            print("JSON: \(JSON)")
        }
}

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