從 NuGet 安裝 Serilog
核心的包是 Serilog 和 Serilog.AspNetCore
建議安裝 Serilog.AspNetCore，幾乎包含了Serilog常用的所有包
異步寫入 Serilog.Sinks.Async
寫入MSSQL Serilog.Sinks.MSSqlServer
Install-Package Serilog.AspNetCore
Install-Package Serilog
Install-Package Serilog.Sinks.Async
Install-Package Serilog.Sinks.MSSqlServer
日志輸出
輸出到控制台
1 using Serilog;
2 using System; 3 using System.Collections.Generic; 4 using System.ComponentModel; 5 using System.IO; 6 using System.Linq; 7 8 namespace NetCoreConsoleApp 9 { 10 class Program 11 { 12 static void Main(string[] args) 13 { 14 Log.Logger = new LoggerConfiguration() 15 .WriteTo.Console() //輸出到控制台 16 .CreateLogger(); 17 18 Log.Information("log"); 19 20 } 21 22 23 } 24 }
輸出到本地日志文件
WriteTo.File詳解（日志默認路徑為當前程序路徑）
path：默認路徑是程序的bin目錄+path參數，當然也可以寫絕對路徑，只需要寫入參數就可以了
rollingInterval：創建文件的類別，可以是分鍾，小時，天，月。 此參數可以讓創建的log文件名默認 + 時間。例如：log20191219.log
outputTemplate：日志模板，可以自定義
retainedFileCountLimit：設置日志文件個數最大值，默認31，意思就是只保留最近的31個日志文件,等於null時永遠保留文件
1 using Serilog;
2 using System; 3 using System.Collections.Generic; 4 using System.ComponentModel; 5 using System.IO; 6 using System.Linq; 7 8 namespace NetCoreConsoleApp 9 { 10 class Program 11 { 12 static void Main(string[] args) 13 { 14 /* 15 WriteTo.File詳解 16 path：默認路徑是程序的bin目錄+path參數，當然也可以寫絕對路徑，只需要寫入參數就可以了 17 rollingInterval：創建文件的類別，可以是分鍾，小時，天，月。 此參數可以讓創建的log文件名 + 時間。例如log20191219.log 18 outputTemplate：日志模板，可以自定義 19 retainedFileCountLimit：設置日志文件個數最大值，默認31，意思就是只保留最近的31個日志文件,等於null時永遠保留文件 20 */ 21 22 23 string SerilogOutputTemplate = "{NewLine}{NewLine}Date：{Timestamp:yyyy-MM-dd HH:mm:ss.fff}{NewLine}LogLevel：{Level}{NewLine}Message：{Message}{NewLine}{Exception}" + new string('-', 100); 24 25 Log.Logger = new LoggerConfiguration() 26 .MinimumLevel.Debug() // 所有Sink的最小記錄級別 27 .WriteTo.Console() //輸出到控制台 28 .WriteTo.File("00_Logs\\log.log", //$"{AppContext.BaseDirectory}00_Logs\log.log" 29 rollingInterval: RollingInterval.Day, 30 outputTemplate: SerilogOutputTemplate 31 //,retainedFileCountLimit: 31 32 ) 33 .CreateLogger(); 34 Log.Information("log"); 35 } 36 } 37 }
輸出到本地日志文件（異步）
需要Serilog.Sinks.Async包，github詳解路徑：https://github.com/serilog/serilog-sinks-async
1 using Serilog;
2
3 namespace NetCoreConsoleApp 4 { 5 class Program 6 { 7 static void Main(string[] args) 8 { 9 //github詳解路徑：https://github.com/serilog/serilog-sinks-async 10 11 Log.Logger = new LoggerConfiguration() 12 .WriteTo.Async(a => a.File("00_Logs\\log.log", rollingInterval: RollingInterval.Day)) 13 .CreateLogger(); 14 Log.Information("log"); 15 Log.CloseAndFlush(); 16 } 17 } 18 }
不同的日志級別輸出到不同的文件夾下
using Serilog;
using Serilog.Events; using System; namespace NetCoreConsoleApp { class Program { static void Main(string[] args) { string LogFilePath(string LogEvent) => $@"{AppContext.BaseDirectory}00_Logs\{LogEvent}\log.log"; string SerilogOutputTemplate = "{NewLine}{NewLine}Date：{Timestamp:yyyy-MM-dd HH:mm:ss.fff}{NewLine}LogLevel：{Level}{NewLine}Message：{Message}{NewLine}{Exception}" + new string('-', 50); Log.Logger = new LoggerConfiguration() .Enrich.FromLogContext() .WriteTo.Console() .MinimumLevel.Debug() // 所有Sink的最小記錄級別 .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level == LogEventLevel.Debug).WriteTo.File(LogFilePath("Debug"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate)) .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level == LogEventLevel.Information).WriteTo.File(LogFilePath("Information"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate)) .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level == LogEventLevel.Warning).WriteTo.File(LogFilePath("Warning"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate)) .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level == LogEventLevel.Error).WriteTo.File(LogFilePath("Error"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate)) .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level == LogEventLevel.Fatal).WriteTo.File(LogFilePath("Fatal"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate)) .CreateLogger(); Log.Information("log"); Log.Error("log"); } } }
輸出到MSSQL
需要Serilog.Sinks.MSSqlServer包，github詳解路徑：https://github.com/serilog/serilog-sinks-mssqlserver
參考鏈接：https://www.cnblogs.com/lonelyxmas/p/11980881.html
using Serilog;
using Serilog.Events; using Serilog.Sinks.MSSqlServer; using System; using System.Collections.ObjectModel; using System.Data; namespace ConsoleApp1 { class Program { static void Main(string[] args) { string connectionString = @"Server=....";string tableNameA = "LogsA"; string tableNameB = "LogsB"; string tableNameC = "LogsC"; static void Write() { Log.Information("測試信息"); Log.Error("Error"); Log.Write(LogEventLevel.Error, new Exception("錯誤"), "致命錯誤"); }; //A:默認配置 //autoCreateSqlTable為true 時 會自動創建日志表 Log.Logger = new LoggerConfiguration().WriteTo.MSSqlServer(connectionString, tableNameA, autoCreateSqlTable: true).CreateLogger(); Write(); //B:移除列 var options = new ColumnOptions(); options.Store.Remove(StandardColumn.Properties); options.Store.Remove(StandardColumn.MessageTemplate); Log.Logger = new LoggerConfiguration() .WriteTo.MSSqlServer(connectionString, tableNameB, columnOptions: options, autoCreateSqlTable: true) .CreateLogger(); Write(); //C:添加自定義列 options = new ColumnOptions(); options.AdditionalColumns = new Collection<SqlColumn> { new SqlColumn { DataType = SqlDbType.NVarChar, DataLength =-1, ColumnName = "IP" }, new SqlColumn { DataType = SqlDbType.NVarChar, DataLength =-1, ColumnName = "IP2" } }; Log.Logger = new LoggerConfiguration() .Enrich.WithProperty("IP", "8.8.8.8") .Enrich.WithProperty("IP2", "9.9.9.9") .WriteTo.MSSqlServer(connectionString, tableNameC, columnOptions: options, autoCreateSqlTable: true) .CreateLogger(); Write(); Console.WriteLine("Hello World!"); Console.ReadKey(); } } }
ASP.NET Core 中使用 Serilog
參考鏈接：https://www.cnblogs.com/MaleDeer/p/10797509.html
在Program.cs程序啟動時注入Serilog 加載配置
using System;
using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Hosting; using Serilog; namespace WebApplication1 { public class Program { public static void Main(string[] args) { Log.Logger = new LoggerConfiguration() .MinimumLevel.Debug() .WriteTo.Console() .WriteTo.File($"{AppContext.BaseDirectory}00_Logs\\log.log", rollingInterval: RollingInterval.Day) .CreateLogger(); try { Log.Information("Starting up"); CreateHostBuilder(args).Build().Run(); } catch (Exception ex) { Log.Fatal(ex, "Application start-up failed"); } finally { Log.CloseAndFlush(); } } public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); }) .UseSerilog(); } }
或者
using System;using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Hosting; using Serilog; namespace WebApplication1 { public class Program { public static void Main(string[] args) { CreateHostBuilder(args).Build().Run(); } public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); webBuilder.UseSerilog((hostingContext, loggerConfiguration) => { loggerConfiguration .ReadFrom.Configuration(hostingContext.Configuration) .Enrich.FromLogContext() .WriteTo.File($"{AppContext.BaseDirectory}00_Logs\\log.log", rollingInterval: RollingInterval.Day) .WriteTo.Console(); }); }); } }
使用 Serilog 時，直接使用 ILogger 即可，因為此服務項目應該是默認注入了，此處需要依賴關系注入知識。如你不了解依賴關系注入，請看 微軟官方文檔。
using System.Collections.Generic;
using Microsoft.AspNetCore.Mvc; using Microsoft.Extensions.Logging; namespace WebApplication1.Controllers { [Route("api/[controller]")] [ApiController] public class ValuesController : ControllerBase { private readonly ILogger<ValuesController> _logger; public ValuesController(ILogger<ValuesController> logger) { _logger = logger; } // GET api/values [HttpGet] public ActionResult<IEnumerable<string>> Get() { _logger.LogInformation("test info"); return new string[] { "value1", "value2" }; } } }
相關鏈接
github：
https://github.com/serilog