How to Make Alamofire Post Request with "Form-Data" Parameters

how to use form data in Alamofire

If you're trying to pass parameters as multipart/form-data you have to use the upload method in Alamofire:

func fetchRegisterData() {
    let parameters = ["mobile": mobilenumberTextfield.text!]

    AF.upload(multipartFormData: { (multiFormData) in
        for (key, value) in parameters {
            multiFormData.append(Data(value.utf8), withName: key)
        }
    }, to: registerApi).responseJSON { response in
        switch response.result {
        case .success(let JSON):
            print("response is :\(response)")

        case .failure(_):
            print("fail")
        }
    }
}

Using FORM DATA with Alamofire

So my solution is.... you have to specify the Parameter Encoding in Alamofire. So the code will look like this.

Swift 2.0

func registerNewUserFormData(completionHandler: (Bool, String?) -> ()){

        // build parameters
        let parameters = ["email": "test@test.cz", "password": "123456"]

        // build request
        Alamofire.request(.POST, urlDomain + "register", parameters: parameters, encoding: .URL).responseJSON { response in

            switch response.result {
            case .Success:
                print("Validation Successful")
                if let JSON = response.result.value {
                    print(JSON)
                }

            case .Failure(let error):
                print(error)

            }
        }
    }

How to make alamofire post request with form-data parameters

Try changing

multipartFormData.append(UIImagePNGRepresentation(imgToSend)‌​!, withName: "image")

to

multipartFormData.append(UIImagePNGRepresentation(imgToSend)‌​!, withName: "image", fileName: "sample.png", mimeType: "image/png")

If you're getting warning like:

line 2878 [boringssl_session_write] SSL_ERROR_SYSCALL(5): operation
failed externally to the library

You can simply ignore it. This simply means that an operation on the TLS connection failed because the TLS was closed via the close_notify alert. This sort of thing is not a problem in and of itself.

You can disable OS logging in Xcode to make them go away. With your project window open, go to Project -> Scheme -> Edit Scheme... and add "OS_ACTIVITY_MODE" to the Environment Variables section and set its value to "disable". When you rerun the app those warnings should now not appear.

How do I make POST form-data request with Alamofire? - Swift

I found the solution! for anyone else who might be facing this problem, heres why:

You just have to specify the filename too.

AF.upload(multipartFormData: { multipartFormData in
        multipartFormData.append(Data("one".utf8), withName: "file", fileName: "landing.jpeg")

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