从 NuGet 安装 Serilog
核心的包是 Serilog 和 Serilog.AspNetCore
建议安装 Serilog.AspNetCore,几乎包含了Serilog常用的所有包
异步写入 Serilog.Sinks.Async
写入MSSQL Serilog.Sinks.MSSqlServer
Install-Package Serilog.AspNetCore
Install-Package Serilog
Install-Package Serilog.Sinks.Async
Install-Package Serilog.Sinks.MSSqlServer
日志输出
输出到控制台
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() //输出到控制台
16 .CreateLogger();
17
18 Log.Information("log");
19
20 }
21
22
23 }
24 }
输出到本地日志文件
WriteTo.File详解(日志默认路径为当前程序路径)
path:默认路径是程序的bin目录+path参数,当然也可以写绝对路径,只需要写入参数就可以了
rollingInterval:创建文件的类别,可以是分钟,小时,天,月。 此参数可以让创建的log文件名默认 + 时间。例如:log20191219.log
outputTemplate:日志模板,可以自定义
retainedFileCountLimit:设置日志文件个数最大值,默认31,意思就是只保留最近的31个日志文件,等于null时永远保留文件
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详解
16 path:默认路径是程序的bin目录+path参数,当然也可以写绝对路径,只需要写入参数就可以了
17 rollingInterval:创建文件的类别,可以是分钟,小时,天,月。 此参数可以让创建的log文件名 + 时间。例如log20191219.log
18 outputTemplate:日志模板,可以自定义
19 retainedFileCountLimit:设置日志文件个数最大值,默认31,意思就是只保留最近的31个日志文件,等于null时永远保留文件
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的最小记录级别
27 .WriteTo.Console() //输出到控制台
28 .WriteTo.File("00_Logs\log.log", //$"{AppContext.BaseDirectory}00_Logslog.log"
29 rollingInterval: RollingInterval.Day,
30 outputTemplate: SerilogOutputTemplate
31 //,retainedFileCountLimit: 31
32 )
33 .CreateLogger();
34 Log.Information("log");
35 }
36 }
37 }
输出到本地日志文件(异步)
需要Serilog.Sinks.Async包,github详解路径: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详解路径: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 }
不同的日志级别输出到不同的文件夹下
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的最小记录级别
.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");
}
}
}
输出到MSSQL
需要Serilog.Sinks.MSSqlServer包,github详解路径:https://github.com/serilog/serilog-sinks-mssqlserver
参考链接: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("测试信息");
Log.Error("Error");
Log.Write(LogEventLevel.Error, new Exception("错误"), "致命错误");
};
//A:默认配置
//autoCreateSqlTable为true 时 会自动创建日志表
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:添加自定义列
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
参考链接:https://www.cnblogs.com/MaleDeer/p/10797509.html
在Program.cs程序启动时注入Serilog 加载配置
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 时,直接使用 ILogger 即可,因为此服务项目应该是默认注入了,此处需要依赖关系注入知识。如你不了解依赖关系注入,请看 微软官方文档。
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" };
}
}
}