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iOS Build a Weather App with Swift Interacting with Data From the Web Writing Concurrent Networking Code

Posted by Deepa Laxmi
Deepa Laxmi
3,035 Points

GET resquest not successful. http status code 404

Hi @pasanpr,

I am getting a valid http response but I am getting a client error 404.

Does anyone also facing the same issue? Please help me out. Thanks in advance.

Here is my code.

import Foundation

class NetworkOperation
{
    lazy var config : NSURLSessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()
    lazy var session : NSURLSession = NSURLSession(configuration: self.config)
    let queryURL: NSURL
    typealias JSONDictionaryCompletion = ([String: AnyObject]?) -> Void

    init( url : NSURL)
    {
        self.queryURL = url
    }

    func downloadJSONFromURL( completion: JSONDictionaryCompletion)
    {
        let request: NSURLRequest = NSURLRequest(URL: queryURL)
        let dataTask = session.dataTaskWithRequest(request){
            (let data, let response, let error) in
            // 1. check http response for successful GET request
            if let httpResponse = response as? NSHTTPURLResponse
            {
                println("httpResponse status code \(httpResponse.statusCode)")
                switch(httpResponse.statusCode)
                {
                case 200:
                    //2 . create a JSON object with data
                    let jsonDictionary = NSJSONSerialization.JSONObjectWithData(data, options: nil, error: nil) as? [ String: AnyObject]
                    completion(jsonDictionary)
                default:
                    println("GET resquest not successful. http status code \(httpResponse.statusCode)")


                }
            }
            else{
                println("not a valid http response")
            }



        }
        dataTask.resume()
    }
}
Deepa Laxmi
Deepa Laxmi
3,035 Points

Pasan Premaratne Please help me out. Thanks in advance

Pasan Premaratne
Pasan Premaratne
Treehouse Teacher
Pasan Premaratne
Pasan Premaratne
Treehouse Teacher

Deepa Laxmi,

Couple easy things to check first:

  • Are there any spaces in your url? Spaces are invalid. Double check your location coordinates and make sure there's no space after the comma.
  • Are you using a valid key?

1 Answer

Raed Alahmari
Raed Alahmari
12,966 Points
Raed Alahmari
Raed Alahmari
12,966 Points

If you use Xcode 7 use this snippet :

class NetworkOperation {



    lazy var config: NSURLSessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()

    lazy var session: NSURLSession = NSURLSession(configuration: self.config)

    let queryURL: NSURL



    typealias JSONDictionaryCompletion = ([String: AnyObject]? -> Void)



    init(url: NSURL) {

        self.queryURL = url

    }



    func downloadJSONFromURL(completion: JSONDictionaryCompletion) {



        let request = NSURLRequest(URL: queryURL)

        let dataTask = session.dataTaskWithRequest(request) {

            (let data, let response, let error) in



            // 1. Check HTTP response for successful GET request

            if let httpResponse = response as? NSHTTPURLResponse {

                switch httpResponse.statusCode {

                case 200:

                    // 2. Create JSON object with data

                    do {

                        let jsonDictionary = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? [String: AnyObject]

                        completion(jsonDictionary)

                    } catch {

                        completion(nil)

                    }

                default:

                    print("GET request not successful. HTTP status code: \(httpResponse.statusCode)")

                }

            } else {

                print("Error: Not a valid HTTP response")

            }

        }



        dataTask.resume()

    }

}