Swift URLSession HTTP 통신 - 2

HTTP 통신 구현

(Swift)Request Function - GET / DELETE

// Request Body 미포함
func httpRequestQuery(url: String, method: String, completionHandler: @escaping (Bool, Any) -> Void) {
    guard let url = URL(string: url) else {
        print("Error: cannot create URL")
        return
    }
    
    var request = URLRequest(url: url)
    request.httpMethod = method
    
    URLSession.shared.dataTask(with: request) { data, response, error in
        guard error == nil else {
            print("Error: error calling GET")
            print(error!)
            return
        }
        
        guard let data = data else {
            print("Error: Did not receive data")
            return
        }
        
        guard let response = response as? HTTPURLResponse, (200..<300) ~= response.statusCode else {
            print("Error: HTTP request failed")
            return
        }
        
        guard let output = try? JSONDecoder().decode(Response.self, from: data) else {
            print("Error: JSON Parsing Error")
            return
        }
        completionHandler(true, output.result)
    }.resume()
}

 

(Swift)Request Function - POST / PUT

// Request Body 포함
func httpRequestBody(url: String, method: String, param:[String: Any],completionHandler: @escaping (Bool, Any) -> Void) {
    let sendData = try! JSONSerialization.data(withJSONObject: param, options: [])
    
    guard let url = URL(string: url) else {
        print("Error: cannot create URL")
        return
    }
    
    var request = URLRequest(url: url)
    request.httpMethod = method
    // HTTP Request header
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    // HTTP Request body
    request.httpBody = sendData
    
    URLSession.shared.dataTask(with: request) { data, response, error in
        guard error == nil else {
            print("Error: error calling POST")
            print(error!)
            return
        }
        
        guard let data = data else {
            print("Error: Did not receive data")
            return
        }
        
        guard let response = response as? HTTPURLResponse, (200..<300) ~= response.statusCode else {
            print("Error: HTTP request failed")
            return
        }
        
        guard let output = try? JSONDecoder().decode(Response.self, from: data) else {
            print("Error: JSON Parsing Error")
            return
        }
        completionHandler(true, output.result)
    }.resume()
}

 

HTTP Request 호출 function

func request(_ url: String, _ method: String, _ param: [String: Any]? = nil, completionHandler: @escaping (Bool, Any) -> Void) {
    if method == "GET" || method == "DELETE" {
        httpRequestQuery(url: url, method: method) { success, data in
            completionHandler(success, data)
        }
    }
    else {
        httpRequestBody(url: url, method: method, param: param!) { success, data in
            completionHandler(success, data)
        }
    }
}

 

ViewController

class ViewController: UIViewController {
    
    private let url = "http://127.0.0.1:3000/"
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func TappedGetButton(_ sender: UIButton) {
        print("Get")
        request(url, "GET") { success, data in
            print(data)
        }
    }
    
    @IBAction func TappedPostButton(_ sender: UIButton) {
        print("Post")
        request(url, "POST", ["Key": "Request Post", "Method": "POST"]) { success, data in
            print(data)
        }
    }
    
    @IBAction func TappedPutButton(_ sender: UIButton) {
        print("Put")
        request(url, "PUT", ["Key": "Request Put", "Method": "PUT"]) { success, data in
            print(data)
        }
    }
    
    @IBAction func TappedDeleteButton(_ sender: UIButton) {
        print("Delete")
        request(url, "DELETE") { success, data in
            print(data)
        }
    }
}

 

 

테스트 결과