■ Controller 클래스의 Json 메소드를 사용해 JSON 데이터를 받는 방법을 보여준다.
[TestServer 프로젝트]
▶ Models/TestModel.cs
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using System.ComponentModel.DataAnnotations; namespace TestServer.Models { /// <summary> /// 테스트 모델 /// </summary> public class TestModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region ID - ID /// <summary> /// ID /// </summary> public int ID { get; set; } #endregion #region 성명 - Name /// <summary> /// 성명 /// </summary> [Required] [StringLength(50, MinimumLength = 3, ErrorMessage = "성명은 3자 이상 입력해 주시기 바랍니다.")] public string Name { get; set; } #endregion } } |
▶ Models/TestRepository.cs
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using System.Collections.Generic; namespace TestServer.Models { /// <summary> /// 테스트 저장소 /// </summary> public class TestRepository { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 테스트 딕셔너리 /// </summary> public static Dictionary<int, TestModel> TestDictionary; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Static #region 생성자 - TestRepository() /// <summary> /// 생성자 /// </summary> static TestRepository() { TestDictionary = new Dictionary<int, TestModel>(); TestDictionary.Add(1, new TestModel { ID = 1, Name = "홍길동" }); TestDictionary.Add(2, new TestModel { ID = 2, Name = "김철수" }); TestDictionary.Add(3, new TestModel { ID = 3, Name = "이용희" }); } #endregion } } |
▶ Controllers/TestController.cs
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using Microsoft.AspNetCore.Mvc; using System.Linq; using System.Net; using TestServer.Models; namespace TestServer.Controllers { /// <summary> /// 테스트 컨트롤러 /// </summary> [ApiController] [Route("api/[controller]")] public class TestController : Controller { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 리스트 구하기 - GetList() /// <summary> /// 리스트 구하기 /// </summary> /// <returns>리스트</returns> [HttpGet] public JsonResult GetList() { Response.StatusCode = (int)HttpStatusCode.OK; return Json(TestRepository.TestDictionary.Values.ToList()); } #endregion #region 항목 구하기 - GetItem(id) /// <summary> /// 항목 구하기 /// </summary> /// <returns>항목</returns> [HttpGet("{id:int}")] public JsonResult GetItem(int id) { if(TestRepository.TestDictionary.ContainsKey(id)) { Response.StatusCode = (int)HttpStatusCode.OK; return Json(TestRepository.TestDictionary[id]); } else { Response.StatusCode = (int)HttpStatusCode.BadRequest; return Json(null); } } #endregion #region 항목 추가하기 - AddItem(test) /// <summary> /// 항목 추가하기 /// </summary> /// <param name="test">테스트</param> /// <returns>처리 결과</returns> [HttpPost] public JsonResult Post([FromBody]TestModel test) { if(ModelState.IsValid) { if(TestRepository.TestDictionary.ContainsKey(test.ID)) { Response.StatusCode = (int)HttpStatusCode.BadRequest; return Json("FAILURE"); } TestRepository.TestDictionary.Add(test.ID, test); Response.StatusCode = (int)HttpStatusCode.Created; return Json("SUCCESS"); } Response.StatusCode = (int)HttpStatusCode.BadRequest; return Json("FAILURE"); } #endregion } } |
[TestClient 프로젝트]
▶ Program.cs
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using System; using System.Collections.Generic; using System.Net.Http; using System.Net.Http.Headers; using System.Threading.Tasks; namespace TestClient { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> static void Main() { // 포트 5569는 서버 설정과 일치시킨다. using(HttpClient client = GetHTTPClient("http://localhost:5569/")) { List<TestModel> list; TestModel item; string status; Console.WriteLine(); Console.WriteLine("리스트를 조회합니다."); Console.WriteLine("--------------------------------------------------"); list = GetList(client).GetAwaiter().GetResult(); for(int i = 0; i < list.Count; i++) { item = list[i]; Console.WriteLine($"{item.ID}, {item.Name}"); } Console.WriteLine(); Console.WriteLine("항목을 조회합니다."); Console.WriteLine("--------------------------------------------------"); item = GetItem(client, 3).GetAwaiter().GetResult(); Console.WriteLine($"{item?.ID}, {item?.Name}"); Console.WriteLine(); Console.WriteLine("값을 추가합니다."); Console.WriteLine("--------------------------------------------------"); status = AddItem(client, new TestModel { ID = 4, Name = "백만원" }).GetAwaiter().GetResult(); Console.WriteLine(status); Console.WriteLine(); Console.WriteLine("리스트를 조회합니다."); Console.WriteLine("--------------------------------------------------"); list = GetList(client).GetAwaiter().GetResult(); for(int i = 0; i < list.Count; i++) { item = list[i]; Console.WriteLine($"{item.ID}, {item.Name}"); } Console.WriteLine("--------------------------------------------------"); Console.WriteLine("아무 키나 눌러 주시기 바랍니다."); Console.ReadKey(true); } } #endregion #region HTTP 클라이언트 구하기 - GetHTTPClient(baseAddress) /// <summary> /// HTTP 클라이언트 구하기 /// </summary> /// <param name="baseAddress">기준 주소</param> /// <returns>HTTP 클라이언트</returns> private static HttpClient GetHTTPClient(string baseAddress) { HttpClient client = new HttpClient(); client.BaseAddress = new Uri(baseAddress); client.DefaultRequestHeaders.Accept.Clear(); client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); return client; } #endregion #region 리스트 구하기 - GetList(client) /// <summary> /// 리스트 구하기 /// </summary> /// <param name="client">클라이언트</param> /// <returns>리스트</returns> private static async Task<List<TestModel>> GetList(HttpClient client) { string url = string.Format("api/test/"); HttpResponseMessage response = await client.GetAsync(url); if(response.IsSuccessStatusCode) { List<TestModel> list = await response.Content.ReadAsAsync<List<TestModel>>(); return list; } return null; } #endregion #region 항목 구하기 - GetItem(client, id) /// <summary> /// 항목 구하기 /// </summary> /// <param name="client">클라이언트</param> /// <param name="id">ID</param> /// <returns>항목</returns> private static async Task<TestModel> GetItem(HttpClient client, int id) { string url = string.Format("api/test/{0}", id); HttpResponseMessage response = await client.GetAsync(url); if(response.IsSuccessStatusCode) { TestModel item = await response.Content.ReadAsAsync<TestModel>(); return item; } return null; } #endregion #region 항목 추가하기 - AddItem(client, item) /// <summary> /// 항목 추가하기 /// </summary> /// <param name="client">클라이언트</param> /// <param name="item">항목</param> /// <returns>처리 결과</returns> private static async Task<string> AddItem(HttpClient client, TestModel item) { string url = string.Format("api/test/"); var response = await client.PostAsJsonAsync<TestModel>(url, item); if(response.IsSuccessStatusCode) { string result = await response.Content.ReadAsAsync<string>(); return result; } return null; } #endregion } } |
