Wie json von webservice bekommen

Question

Ich habe die URL

http://dev.nsol.sg/projects/sneakers/Api/get_all_news 
Method: POST 

Erforderliche Parameter:

userid 

Antwort:

success = 0 (error), 1 (success) 
message = Description of result if success = 0 then message will have the detail description 
data: if success = 1 then we will have complete details of common requirements like All news 
newsurl: News Image URL + Concatenate Value of img from DB 

Hier ist mein Versuch json von URL zu holen

func news(userid:Int) 
{ 
    let post_data: NSDictionary = NSMutableDictionary() 

    post_data.setValue(userid, forKey: "userid") 
    let url:URL = URL(string: news_url)! 
    let session = URLSession.shared 

    let request = NSMutableURLRequest(url: url) 
    request.httpMethod = "POST" 
    request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData 

    var paramString = "" 

    for (key, value) in post_data 
    { 
     paramString = paramString + (key as! String) 
    } 

    request.httpBody = paramString.data(using: String.Encoding.utf8) 

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

     guard let _:Data = data, let _:URLResponse = response , error == nil else { 

      return 
     } 

     let json: Any? 

     do 
     { 
      json = try JSONSerialization.jsonObject(with: data!, options: []) 
      print("abcnews") 
      print(json) 
     } 
     catch 
     { 
      return 
     } 

     guard let server_response = json as? NSDictionary else 
     { 
      return 
     } 

    }) 

    task.resume() 
} 

Die Ausgabe von json ist

Optional({ 
    data =  (
    ); 
    message = "Invalid User id"; 
    success = 0; 
}) 

Wie die gültige Json zu bekommen? Sie können das Projekt von diesem Link herunterladen https://drive.google.com/file/d/1YJvAEGbh33eHBIJwt1eLOcuCiJknwY8b/view?usp=sharing

Answer 1

Hier die aktualisierte Arbeitscode:

func news(userid: Int) { 

    var request = URLRequest(url: URL(string: news_url)!) 
    request.httpMethod = "POST" 

    //Pass your parameter here 
    let postString = "userid=\(userid)" 
    request.httpBody = postString.data(using: .utf8) 
    let task = URLSession.shared.dataTask(with: request) { data, response, error in 

     guard let data = data, error == nil else { 
      print("error=(error)") 
      return 
     } 


     let json: Any? 

     do 
     { 

      json = try JSONSerialization.jsonObject(with: data, options: []) 
      print("abcnews") 
      //here is your JSON 
      print(json) 
     } 
     catch 
     { 
      return 
     } 

     guard let server_response = json as? NSDictionary else 
     { 
      return 
     } 
    } 
    task.resume() 
} 

Problem mit Ihrem Code war nicht Parameter sind vorbei richtig.

Und mit über Code, den Sie unter Antwort erhalten wird:

Optional({ 
    data =  (
       { 
      "created_date" = "2017-11-09 14:58:58"; 
      "created_on" = "2017-11-09"; 
      "createdd_by" = 3; 
      description = dfdfdsdfsdfs; 
      id = 4; 
      images = "7a53f87882409c4622a0977d5026038b.jpg"; 
      product = 12; 
      status = 1; 
      title = facebook; 
      "title_keys" = fac; 
      type = News; 
     }, 
       { 
      "created_date" = "2017-11-15 14:33:01"; 
      "created_on" = "2017-11-23"; 
      "createdd_by" = 3; 
      description = dfdfdf; 
      id = 7; 
      images = "e626b8003e6e08df874e33556e7f6e69.jpg"; 
      product = 0; 
      status = 1; 
      title = don; 
      "title_keys" = don; 
      type = News; 
     }, 
       { 
      "created_date" = "2017-11-16 10:34:48"; 
      "created_on" = "2017-11-13"; 
      "createdd_by" = 3; 
      description = "my first computer"; 
      id = 8; 
      images = "556b1855de039b8d99bc787acd103262.jpg"; 
      product = 13; 
      status = 1; 
      title = Dell; 
      "title_keys" = dell; 
      type = News; 
     } 
    ); 
    message = "Success."; 
    newsurl = "http://dev.nsol.sg/projects/sneakers/assets/brand_images/thumb/"; 
    success = 1; 
})