■ 대용량 데이터를 스트리밍 방식으로 전달받는 방법을 보여준다. (PostgreSQL 연동)
[TestClient 프로젝트]
▶ Program.cs
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using System; using System.Collections.Generic; using System.IO; using System.Net; using System.Net.Http; using System.Net.Http.Headers; using System.Text; using Newtonsoft.Json; namespace TestClient { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> static void Main() { string url = "https://localhost:44352/api/data/inquirylist"; DataSearchConditionModel searchCondition = new DataSearchConditionModel(); searchCondition.MENU_ID = "A007A6D5-35E6-46A2-A3BD-1B84843BB76C"; searchCondition.MEMBER_GRADE = "99"; searchCondition.LIMIT_AGE = "99"; searchCondition.WRITE_DATE1 = new DateTime(2021, 7 , 1 ); searchCondition.WRITE_DATE2 = new DateTime(2021, 7 , 25); searchCondition.CREATE_TIME1 = new DateTime(1 , 1 , 1 ); searchCondition.CREATE_TIME2 = new DateTime(9999, 12, 31); int i = 0; var result = GetPOSTData1<DataModel>(url, searchCondition); foreach(DataModel photo in result) { Console.WriteLine("{0} {1} {2}", i++, photo.ID, photo.SUBJECT); } } #endregion #region POST 스트림 구하기 - POSTGetStream(serverURL, contentType, encoding, argument, timeOut) /// <summary> /// POST 스트림 구하기 /// </summary> /// <param name="serverURL">서버 URL</param> /// <param name="contentType">컨텐츠 타입</param> /// <param name="encoding">인코딩</param> /// <param name="argument">인자 문자열</param> /// <param name="timeOut">타임 아웃</param> /// <returns>POST 스트림</returns> private static Stream POSTGetStream(string serverURL, string contentType, Encoding encoding, string argument, int? timeOut = null) { byte[] argumentArray = encoding.GetBytes(argument); HttpWebRequest request = WebRequest.Create(serverURL) as HttpWebRequest; request.ProtocolVersion = HttpVersion.Version11; request.AllowAutoRedirect = true; request.AllowWriteStreamBuffering = true; request.Method = WebRequestMethods.Http.Post; request.ContentType = contentType; request.ContentLength = argumentArray.Length; if(timeOut.HasValue) { request.Timeout = timeOut.Value; } using(Stream requestStream = request.GetRequestStream()) { requestStream.Write(argumentArray, 0, argumentArray.Length); } HttpWebResponse response = request.GetResponse() as HttpWebResponse; Stream responseStream = response.GetResponseStream(); return responseStream; } #endregion #region POST 데이터 구하기 1 - GetPOSTData1<TResultItem>(url, source) /// <summary> /// POST 데이터 구하기 1 /// </summary> /// <typeparam name="TResultItem">결과 항목 타입</typeparam> /// <param name="url">URL</param> /// <param name="source">소스 객체</param> /// <returns>결과 항목 타입 열거 가능형</returns> private static IEnumerable<TResultItem> GetPOSTData1<TResultItem>(string url, object source) { string sourceJSON = JsonConvert.SerializeObject(source); HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, url); requestMessage.Content = new StringContent(sourceJSON, Encoding.UTF8, "application/json"); requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); HttpClient client = new HttpClient(); HttpResponseMessage responseMessage = client.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead).Result; responseMessage.EnsureSuccessStatusCode(); using(Stream stream = responseMessage.Content.ReadAsStreamAsync().Result) { using(StreamReader streamReader = new StreamReader(stream)) { JsonSerializer serializer = new JsonSerializer(); using(JsonTextReader jsonTextReader = new JsonTextReader(streamReader)) { while(jsonTextReader.Read()) { if(jsonTextReader.TokenType != JsonToken.StartArray && jsonTextReader.TokenType != JsonToken.EndArray) { yield return serializer.Deserialize<TResultItem>(jsonTextReader); } } } } } } #endregion #region POST 데이터 구하기 2 - GetPOSTData2<TResultItem>(url, source) /// <summary> /// POST 데이터 구하기 2 /// </summary> /// <typeparam name="TResultItem">결과 항목 타입</typeparam> /// <param name="url">URL</param> /// <param name="source">소스 객체</param> /// <returns>결과 항목 타입 열거 가능형</returns> private static IEnumerable<TResultItem> GetPOSTData2<TResultItem>(string url, object source) { string sourceJSON = JsonConvert.SerializeObject(source); using(Stream stream = POSTGetStream(url, "application/json; charset=utf-8", Encoding.UTF8, sourceJSON)) { using(StreamReader streamReader = new StreamReader(stream)) { using(JsonTextReader jsonTextReader = new JsonTextReader(streamReader)) { JsonSerializer serializer = new JsonSerializer(); while(jsonTextReader.Read()) { if(jsonTextReader.TokenType != JsonToken.StartArray && jsonTextReader.TokenType != JsonToken.EndArray) { yield return serializer.Deserialize<TResultItem>(jsonTextReader); } } } } } } #endregion } } |
[TestServer 프로젝트]
▶ launchSettings.json
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{ "$schema" : "http://json.schemastore.org/launchsettings.json", "iisSettings" : { "windowsAuthentication" : false, "anonymousAuthentication" : true, "iisExpress" : { "applicationUrl" : "http://localhost:35043", "sslPort" : 44352 } }, "profiles" : { "IIS Express" : { "commandName" : "IISExpress", "launchBrowser" : true, "launchUrl" : "swagger", "environmentVariables" : { "ASPNETCORE_ENVIRONMENT" : "Development" } }, "TestServer" : { "commandName" : "Project", "dotnetRunMessages" : "true", "launchBrowser" : true, "launchUrl" : "swagger", "applicationUrl" : "https://localhost:5001;http://localhost:5000", "environmentVariables" : { "ASPNETCORE_ENVIRONMENT" : "Development" } } } } |
▶ appsettings.json
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{ "Logging" : { "LogLevel" : { "Default" : "Information", "Microsoft" : "Warning", "Microsoft.Hosting.Lifetime" : "Information" } }, "AllowedHosts" : "*", "ConnectionStrings" : { "DefaultConnection" : "Server=localhost;Port=5432;Database=arca;User Id=admin;Password=1234;" } } |
▶ DataModel.cs
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using System; namespace TestServer.Models { /// <summary> /// 자료 모델 /// </summary> public class DataModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region ID - ID (NOT NULL) /// <summary> /// ID /// </summary> public string ID { get; set; } #endregion #region 메뉴 ID - MENU_ID (NOT NULL) /// <summary> /// 메뉴 ID /// </summary> public string MENU_ID { get; set; } #endregion #region 제목 - SUBJECT (NOT NULL) /// <summary> /// 제목 /// </summary> public string SUBJECT { get; set; } #endregion #region 작성일 - WRITE_DATE (NOT NULL) /// <summary> /// 작성일 /// </summary> public DateTime WRITE_DATE { get; set; } #endregion #region 순번 - SEQUENCE (NOT NULL) /// <summary> /// 순번 /// </summary> public string SEQUENCE { get; set; } #endregion #region 회원 등급 - MEMBER_GRADE (NOT NULL) /// <summary> /// 회원 등급 /// </summary> public string MEMBER_GRADE { get; set; } #endregion #region 연령 제한 - LIMIT_AGE (NOT NULL) /// <summary> /// 연령 제한 /// </summary> public string LIMIT_AGE { get; set; } #endregion #region 자료 타입 - DATA_TYPE (NOT NULL) /// <summary> /// 자료 타입 /// </summary> public string DATA_TYPE { get; set; } #endregion #region 분류 1 - CATEGORY1 /// <summary> /// 분류 1 /// </summary> public string CATEGORY1 { get; set; } #endregion #region 분류 2 - CATEGORY2 /// <summary> /// 분류 2 /// </summary> public string CATEGORY2 { get; set; } #endregion #region 분류 3 - CATEGORY3 /// <summary> /// 분류 3 /// </summary> public string CATEGORY3 { get; set; } #endregion #region 분류 4 - CATEGORY4 /// <summary> /// 분류 4 /// </summary> public string CATEGORY4 { get; set; } #endregion #region 분류 5 - CATEGORY5 /// <summary> /// 분류 5 /// </summary> public string CATEGORY5 { get; set; } #endregion #region 분류 6 - CATEGORY6 /// <summary> /// 분류 6 /// </summary> public string CATEGORY6 { get; set; } #endregion #region 분류 7 - CATEGORY7 /// <summary> /// 분류 7 /// </summary> public string CATEGORY7 { get; set; } #endregion #region 분류 8 - CATEGORY8 /// <summary> /// 분류 8 /// </summary> public string CATEGORY8 { get; set; } #endregion #region 저장소 ID - STORAGE_ID (NOT NULL) /// <summary> /// 저장소 ID /// </summary> public string STORAGE_ID { get; set; } #endregion #region 저장소명 - STORAGE_NAME (JOIN FIELD) /// <summary> /// 저장소명 /// </summary> public string STORAGE_NAME { get; set; } #endregion #region 생성자 ID - CREATE_ID (NOT NULL) /// <summary> /// 생성자 ID /// </summary> public string CREATE_ID { get; set; } #endregion #region 생성자 사용자 ID - CREATE_USER_ID (JOIN FIELD) /// <summary> /// 생성자 사용자 ID /// </summary> public string CREATE_USER_ID { get; set; } #endregion #region 생성 시간 - CREATE_TIME (NOT NULL) /// <summary> /// 생성 시간 /// </summary> public DateTime CREATE_TIME { get; set; } #endregion #region 수정자 ID - UPDATE_ID (NOT NULL) /// <summary> /// 수정자 ID /// </summary> public string UPDATE_ID { get; set; } #endregion #region 수정자 사용자 ID - UPDATE_USER_ID (JOIN FIELD) /// <summary> /// 수정자 사용자 ID /// </summary> public string UPDATE_USER_ID { get; set; } #endregion #region 수정 시간 - UPDATE_TIME (NOT NULL) /// <summary> /// 수정 시간 /// </summary> public DateTime UPDATE_TIME { get; set; } #endregion } } |
▶ DataSearchConditionModel.cs
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using System; namespace TestServer.Models { /// <summary> /// 자료 조회 조건 모델 /// </summary> public class DataSearchConditionModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 메뉴 ID - MENU_ID /// <summary> /// 메뉴 ID /// </summary> public string MENU_ID { get; set; } #endregion #region ID - ID /// <summary> /// ID /// </summary> public string ID { get; set; } #endregion #region 제목 - SUBJECT /// <summary> /// 제목 /// </summary> public string SUBJECT { get; set; } #endregion #region 순번 - SEQUENCE /// <summary> /// 순번 /// </summary> public string SEQUENCE { get; set; } #endregion #region 회원 등급 - MEMBER_GRADE /// <summary> /// 회원 등급 /// </summary> public string MEMBER_GRADE { get; set; } #endregion #region 연령 제한 - LIMIT_AGE /// <summary> /// 연령 제한 /// </summary> public string LIMIT_AGE { get; set; } #endregion #region 작성일 1 - WRITE_DATE1 /// <summary> /// 작성일 1 /// </summary> public DateTime WRITE_DATE1 { get; set; } #endregion #region 작성일 2 - WRITE_DATE2 /// <summary> /// 작성일 2 /// </summary> public DateTime WRITE_DATE2 { get; set; } #endregion #region 자료 타입 - DATA_TYPE /// <summary> /// 자료 타입 /// </summary> public string DATA_TYPE { get; set; } #endregion #region 분류 1 - CATEGORY1 /// <summary> /// 분류 1 /// </summary> public string CATEGORY1 { get; set; } #endregion #region 분류 2 - CATEGORY2 /// <summary> /// 분류 2 /// </summary> public string CATEGORY2 { get; set; } #endregion #region 분류 3 - CATEGORY3 /// <summary> /// 분류 3 /// </summary> public string CATEGORY3 { get; set; } #endregion #region 분류 4 - CATEGORY4 /// <summary> /// 분류 4 /// </summary> public string CATEGORY4 { get; set; } #endregion #region 분류 5 - CATEGORY5 /// <summary> /// 분류 5 /// </summary> public string CATEGORY5 { get; set; } #endregion #region 분류 6 - CATEGORY6 /// <summary> /// 분류 6 /// </summary> public string CATEGORY6 { get; set; } #endregion #region 분류 7 - CATEGORY7 /// <summary> /// 분류 7 /// </summary> public string CATEGORY7 { get; set; } #endregion #region 분류 8 - CATEGORY8 /// <summary> /// 분류 8 /// </summary> public string CATEGORY8 { get; set; } #endregion #region 저장소명 - STORAGE_NAME /// <summary> /// 저장소명 /// </summary> public string STORAGE_NAME { get; set; } #endregion #region 생성 시간 1 - CREATE_TIME1 /// <summary> /// 생성 시간 1 /// </summary> public DateTime CREATE_TIME1 { get; set; } #endregion #region 생성 시간 2 - CREATE_TIME2 /// <summary> /// 생성 시간 2 /// </summary> public DateTime CREATE_TIME2 { get; set; } #endregion } } |
▶ DataController.cs
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using Microsoft.AspNetCore.Mvc; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.Logging; using System.Collections.Generic; using System.Data; using Npgsql; using Dapper; using TestServer.Models; namespace TestServer.Controllers { [ApiController] [Route("api/[controller]")] public class DataController : ControllerBase { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region INQUIRY_LIST_SQL_POSTGRESQL /// <summary> /// INQUIRY_LIST_SQL (POSTGRESQL용) /// </summary> private static string INQUIRY_LIST_SQL_POSTGRESQL = @" SELECT A.ID AS ID ,A.MENU_ID AS MENU_ID ,A.SUBJECT AS SUBJECT ,A.WRITE_DATE AS WRITE_DATE ,A.SEQUENCE AS SEQUENCE ,A.MEMBER_GRADE AS MEMBER_GRADE ,A.LIMIT_AGE AS LIMIT_AGE ,A.DATA_TYPE AS DATA_TYPE ,A.CATEGORY1 AS CATEGORY1 ,A.CATEGORY2 AS CATEGORY2 ,A.CATEGORY3 AS CATEGORY3 ,A.CATEGORY4 AS CATEGORY4 ,A.CATEGORY5 AS CATEGORY5 ,A.CATEGORY6 AS CATEGORY6 ,A.CATEGORY7 AS CATEGORY7 ,A.CATEGORY8 AS CATEGORY8 ,A.STORAGE_ID AS STORAGE_ID ,B.NAME AS STORAGE_NAME ,A.CREATE_ID AS CREATE_ID ,C.USER_ID AS CREATE_USER_ID ,A.CREATE_TIME AS CREATE_TIME ,A.UPDATE_ID AS UPDATE_ID ,D.USER_ID AS UPDATE_USER_ID ,A.UPDATE_TIME AS UPDATE_TIME FROM LIBRARY_DATA A LEFT JOIN COM_STORAGE B ON B.ID = A.STORAGE_ID LEFT JOIN COM_USER C ON C.ID = A.CREATE_ID LEFT JOIN COM_USER D ON D.ID = A.UPDATE_ID WHERE A.MENU_ID = @MENU_ID AND (@ID = '' OR @ID IS NULL OR A.ID ILIKE @ID || '%') AND (@SUBJECT = '' OR @SUBJECT IS NULL OR A.SUBJECT ILIKE @SUBJECT || '%') AND (@SEQUENCE = '' OR @SEQUENCE IS NULL OR A.SEQUENCE ILIKE @SEQUENCE || '%') AND A.MEMBER_GRADE <= @MEMBER_GRADE AND A.LIMIT_AGE <= @LIMIT_AGE AND A.WRITE_DATE BETWEEN @WRITE_DATE1 AND @WRITE_DATE2 AND (@DATA_TYPE = '' OR @DATA_TYPE IS NULL OR A.DATA_TYPE = @DATA_TYPE ) AND (@CATEGORY1 = '' OR @CATEGORY1 IS NULL OR A.CATEGORY1 ILIKE @CATEGORY1 || '%') AND (@CATEGORY2 = '' OR @CATEGORY2 IS NULL OR A.CATEGORY2 ILIKE @CATEGORY2 || '%') AND (@CATEGORY3 = '' OR @CATEGORY3 IS NULL OR A.CATEGORY3 ILIKE @CATEGORY3 || '%') AND (@CATEGORY4 = '' OR @CATEGORY4 IS NULL OR A.CATEGORY4 ILIKE @CATEGORY4 || '%') AND (@CATEGORY5 = '' OR @CATEGORY5 IS NULL OR A.CATEGORY5 ILIKE @CATEGORY5 || '%') AND (@CATEGORY6 = '' OR @CATEGORY6 IS NULL OR A.CATEGORY6 ILIKE @CATEGORY6 || '%') AND (@CATEGORY7 = '' OR @CATEGORY7 IS NULL OR A.CATEGORY7 ILIKE @CATEGORY7 || '%') AND (@CATEGORY8 = '' OR @CATEGORY8 IS NULL OR A.CATEGORY8 ILIKE @CATEGORY8 || '%') AND (@STORAGE_NAME = '' OR @STORAGE_NAME IS NULL OR B.NAME ILIKE @STORAGE_NAME || '%') AND A.CREATE_TIME BETWEEN @CREATE_TIME1 AND @CREATE_TIME2 ORDER BY A.SEQUENCE DESC ,A.WRITE_DATE DESC ,A.CREATE_TIME DESC ,A.SUBJECT ASC "; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 구성 /// </summary> private readonly IConfiguration configuration; /// <summary> /// 로거 /// </summary> private readonly ILogger<DataController> logger; /// <summary> /// 연결 문자열 /// </summary> private readonly string connectionString; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - DataController(configuration, logger) /// <summary> /// 생성자 /// </summary> /// <param name="configuration">구성</param> /// <param name="logger">로거</param> public DataController(IConfiguration configuration, ILogger<DataController> logger) { this.configuration = configuration; this.logger = logger; this.connectionString = configuration.GetConnectionString("DefaultConnection"); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 리스트 조회하기 - InquiryList(searchCondition, transaction) /// <summary> /// 리스트 조회하기 /// </summary> /// <param name="searchCondition">조회 조건</param> /// <param name="transaction">트랜잭션</param> /// <returns>조회 결과</returns> [HttpPost] [Route("InquiryList")] public IEnumerable<DataModel> InquiryList([FromBody] DataSearchConditionModel searchCondition) { using(IDbConnection connection = CreateConnection()) { using(IDataReader reader = connection.ExecuteReader(INQUIRY_LIST_SQL_POSTGRESQL, searchCondition)) { while(reader.Read()) { var rowParser = reader.GetRowParser<DataModel>(typeof(DataModel)); yield return rowParser(reader); } } } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 연결 생성하기 - CreateConnection() /// <summary> /// 연결 생성하기 /// </summary> /// <returns>연결</returns> private IDbConnection CreateConnection() { return new NpgsqlConnection(this.connectionString); } #endregion } } |
▶ Startup.cs
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using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; using Microsoft.OpenApi.Models; namespace TestServer { /// <summary> /// 시작 /// </summary> public class Startup { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 구성 - Configuration /// <summary> /// 구성 /// </summary> public IConfiguration Configuration { get; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Startup(configuration) /// <summary> /// 생성자 /// </summary> /// <param name="configuration">구성</param> public Startup(IConfiguration configuration) { Configuration = configuration; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 서비스 구성하기 - ConfigureServices(IServiceCollection serviceCollection) /// <summary> /// 서비스 구성하기 /// </summary> /// <param name="serviceCollection">서비스 컬렉션</param> public void ConfigureServices(IServiceCollection serviceCollection) { serviceCollection.AddControllers(); serviceCollection.AddSwaggerGen ( options => { options.SwaggerDoc("v1", new OpenApiInfo { Title = "TestServer", Version = "v1" }); } ); } #endregion #region 구성하기 - Configure(builder, environment) /// <summary> /// 구성하기 /// </summary> /// <param name="builder">빌더</param> /// <param name="environment">환경</param> public void Configure(IApplicationBuilder builder, IWebHostEnvironment environment) { if(environment.IsDevelopment()) { builder.UseDeveloperExceptionPage(); builder.UseSwagger(); builder.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "TestServer v1")); } builder.UseHttpsRedirection(); builder.UseRouting(); builder.UseAuthorization(); builder.UseEndpoints ( endpoints => { endpoints.MapControllers(); } ); } #endregion } } |
▶ Program.cs
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using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Hosting; namespace TestServer { /// <summary> /// 프로그램 /// </summary> public class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 호스트 빌더 생성하기 - CreateHostBuilder(argumentList) /// <summary> /// 호스트 빌더 생성하기 /// </summary> /// <param name="argumentList">인자 리스트</param> /// <returns>호스트 빌더</returns> public static IHostBuilder CreateHostBuilder(string[] argumentList) => Host.CreateDefaultBuilder(argumentList) .ConfigureWebHostDefaults ( webHostBuilder => { webHostBuilder.UseStartup<Startup>(); } ); #endregion #region 프로그램 시작하기 - Main(argumentList) /// <summary> /// 프로그램 시작하기 /// </summary> /// <param name="argumentList">인자 리스트</param> public static void Main(string[] argumentList) { CreateHostBuilder(argumentList).Build().Run(); } #endregion } } |
