前言

一、什么是Serilog?

二、如何安装Serilog?

Install-Package Serilog.AspNetCore

三、如何配置Serilog?

3.1Program的配置如下

  • Configuration:构建对象,读取appsettings.json的配置文件
  • Log.Logger:读取Configuration中的日志配置信息,然后设置输出的级别、内容、位置等。
  • UseSerilog(dispose:true):引入Serilog框架,dispose:true=>系统退出时,释放日志对象
   public class Program
    {
        public static IConfiguration Configuration { get; } = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())//设置基础路径
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)//添加配置文件
            .AddEnvironmentVariables()//添加环境变量
            .Build();

        public static void Main(string[] args)
        {
            Log.Logger = new LoggerConfiguration().ReadFrom.Configuration(Configuration)
                .MinimumLevel.Debug()
                .Enrich.FromLogContext()//使用Serilog.Context.LogContext中的属性丰富日志事件。
                .WriteTo.Console(new RenderedCompactJsonFormatter())//输出到控制台
                .WriteTo.File(formatter:new CompactJsonFormatter(),"logs\\test.txt",rollingInterval:RollingInterval.Day)//输出到文件
                .CreateLogger();//清除内置日志框架

            try
            {
                Log.Information("Starting web host");
                CreateHostBuilder(args).Build().Run();
            }
            catch (Exception ex)
            {
                Log.Fatal(ex,"Host terminated unexpectedly");
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }
        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args).
                .ConfigureWebHostDefaults(webBuilder =>{
                    webBuilder.UseStartup<Startup>();
                }).UseSerilog(dispose:true);//引入第三方日志框架

3.2 appsettings.json配置

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Warning",
        "System": "Information"
      }
    }
  }
}

四、如何使用Serilog?

        private readonly ILogger<WeatherForecastController> _logger;

        public WeatherForecastController(ILogger<WeatherForecastController> logger)
        {
            _logger = logger;
        }

        [HttpGet]
        public void Get()
        {
            _logger.LogInformation("LogInformation" + Guid.NewGuid().ToString("N"));
            _logger.LogDebug("LogDebug" + Guid.NewGuid().ToString("N"));
            _logger.LogWarning("LogWarning" + Guid.NewGuid().ToString("N"));
            _logger.LogError("LogError" + Guid.NewGuid().ToString("N"));
        }

五、展示效果

控制台显示
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP
文件显示
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

六、扩展

6.1分级别显示

  //存储日志文件的路径
  string LogFilePath(string LogEvent) => $@"{AppContext.BaseDirectory}00_Logs\{LogEvent}\log.log";
  //存储日志文件的格式
  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().ReadFrom.Configuration(Configuration)
                .MinimumLevel.Debug()
                .Enrich.FromLogContext()//使用Serilog.Context.LogContext中的属性丰富日志事件。
                .WriteTo.Console(new RenderedCompactJsonFormatter())
                .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();

效果如下:
文件级别分类:
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP
日志格式输出:
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

6.2存储到数据库

Install-Package Serilog.Sinks.MSSqlServer

修改配置
MSSqlServer(参数一,参数二,参数三,参数四)

  • 数据库的地址
  • 数据库中记录日志表的名称
  • 是否自动创建表(Nlog是没有这个功能的)
  • 记录日志最小级别

            Log.Logger =  new LoggerConfiguration().ReadFrom.Configuration(Configuration)
                 .MinimumLevel.Information()
                 .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                 .ReadFrom.Configuration(new ConfigurationBuilder()
                 .AddJsonFile("appsettings.json")
                 .Build())
                 .WriteTo.MSSqlServer(connecting, "logs", autoCreateSqlTable: true, restrictedToMinimumLevel: LogEventLevel.Information)
                 .CreateLogger();

效果如下:
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

6.2.1数据库中表字段

新增
第一步:创建列

  var options = new ColumnOptions();
            options.AdditionalColumns = new Collection<SqlColumn>
                {
                    new SqlColumn { DataType = SqlDbType.NVarChar, DataLength =-1, ColumnName = "IP" },
                };

第二步:添加列
Enrich.WithProperty:添加属性
columnOptions: options:配置数据库的列

  Log.Logger =  new LoggerConfiguration().ReadFrom.Configuration(Configuration)
                 .MinimumLevel.Information()
                 .Enrich.WithProperty("IP", "2.2.2.2")
                 .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                 .ReadFrom.Configuration(new ConfigurationBuilder()
                 .AddJsonFile("appsettings.json")
                 .Build())
                 .WriteTo.MSSqlServer(connecting, "logs", autoCreateSqlTable: true, columnOptions: options, restrictedToMinimumLevel: LogEventLevel.Information)
                 .CreateLogger();

第三步:运行即可
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

移除
第一步:记录移除列
StandardColumn:是框架默认提供数据库默认表,它的属性就是映射数据库的字段

  var options = new ColumnOptions();
            options.Store.Remove(StandardColumn.Properties);
            options.Store.Remove(StandardColumn.TimeStamp);

第二步:配置属性


            Log.Logger =  new LoggerConfiguration().ReadFrom.Configuration(Configuration)
                 .MinimumLevel.Information()
                 .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                 .ReadFrom.Configuration(new ConfigurationBuilder()
                 .AddJsonFile("appsettings.json")
                 .Build())
                 .WriteTo.MSSqlServer(connecting, "logs", autoCreateSqlTable: true, columnOptions: options, restrictedToMinimumLevel: LogEventLevel.Information)
                 .CreateLogger();

第三步:运行即可
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

注意事项:

6.3发送到邮箱

添加安装包:

Install-Package Serilog.Sinks.Email

配置如下:

 Log.Logger = new LoggerConfiguration()
                .MinimumLevel.Information()
                .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                .ReadFrom.Configuration(new ConfigurationBuilder()
                .AddJsonFile("appsettings.json")
                .Build())
                .WriteTo.Email(new EmailConnectionInfo() {
                    Port= 465,//端口
                    EmailSubject="邮件日志测试",//邮件主题
                    FromEmail= "[email protected]",//发件箱
                    ToEmail="[email protected]",//收件箱
                    MailServer= "smtp.163.com",//发件箱的邮箱服务
                    NetworkCredentials = new NetworkCredential("[email protected]", "zc960810"),//发件人的邮箱和密码
                    IsBodyHtml =true,//邮件是否是HTML格式
                    EnableSsl=true//使用启用SSL端口
                })
                .CreateLogger();

效果如下
.net core中的那些常用的日志框架(Serilog篇)-LMLPHP

总结

10-15 20:40