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iosswiftalamofirensurlrequest

Bad request status code 400 after request

Why after all the below code, after I do a po NSKeyedUnarchiver.unarchiveObject(with: (response.request?.httpBody)!) I get nil ? And the response code is 400. And the reason the response code is 400, I believe is because of the parameters. Any suggestions why this happens?

let urlRequest = NSMutableURLRequest(url: url)
let bodyData = parameters.first!.key + "=" + String(describing: parameters.first!.value)

urlRequest.bind(to: command!)
urlRequest.httpBody = bodyData.data(using: .utf8)
urlRequest.httpMethod = "POST"
urlRequest.allHTTPHeaderFields = NetworkManager.defaultHeaders()

return Alamofire.request(urlRequest.copy() as! URLRequest)

EDIT: Ok, so I replaced some lines and now the code looks like this and the parameters are no longer nil:

let urlRequest = NSMutableURLRequest(url: url)
let dataParameters: Data = NSKeyedArchiver.archivedData(withRootObject: parameters)

urlRequest.bind(to: command!)
urlRequest.httpBody = dataParameters
urlRequest.httpMethod = HTTPMethod.post.rawValue
urlRequest.allHTTPHeaderFields = NetworkManager.defaultHeaders()

return Alamofire.request(urlRequest.copy() as! URLRequest)

But even like this I get a 400 code. So after investigating a little with postman I found that if I put the body like this {"xxxxx":"xxxxxxxxx"} it works and I get a good code, but if I use a key and value it doesn't. How do I make that work?

Solution

  • So I found why I got the bad request and the answer was really simple. Just had to use json serialization.

    And I just replaced this 

    let jsonData = try? JSONSerialization.data(withJSONObject: parameters)
urlRequest.httpBody = jsonData

    with this 

    let dataParameters: Data = NSKeyedArchiver.archivedData(withRootObject: parameters)
urlRequest.httpBody = dataParameters

    I'll just leave this here in case someone has the same problem as me.