log4net + appsettings.json

log4net.config配置

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <appender name="DebugAppender" type="log4net.Appender.RollingFileAppender,log4net">
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="DEBUG" />
      <param name="LevelMax" value="DEBUG" />
    </filter>
    <file value="Logs/" />
    <encoding value="utf-8"/>
    <preserveLogFileNameExtension value="true" />
    <staticLogFileName value="false" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <countDirection value="1" />
    <maxSizeRollBackups value="-1"/>
    <maximumFileSize value="100MB"/>
    <datePattern value="yyyy-MM-dd&quot;/Debug.log&quot;" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>

  <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender,log4net">
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="INFO" />
      <param name="LevelMax" value="INFO" />
    </filter>
    <file value="Logs/" />
    <encoding value="utf-8"/>
    <preserveLogFileNameExtension value="true" />
    <staticLogFileName value="false" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <countDirection value="1" />
    <maxSizeRollBackups value="-1"/>
    <maximumFileSize value="100MB"/>
    <datePattern value="yyyy-MM-dd&quot;/Info.log&quot;" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>

  <appender name="WarnAppender" type="log4net.Appender.RollingFileAppender,log4net">
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="WARN" />
      <param name="LevelMax" value="WARN" />
    </filter>
    <file value="Logs/" />
    <encoding value="utf-8"/>
    <preserveLogFileNameExtension value="true" />
    <staticLogFileName value="false" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <countDirection value="1" />
    <maxSizeRollBackups value="-1"/>
    <maximumFileSize value="100MB"/>
    <datePattern value="yyyy-MM-dd&quot;/Warn.log&quot;" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>

  <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender,log4net">
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="ERROR" />
      <param name="LevelMax" value="FATAL" />
    </filter>
    <file value="Logs/" />
    <encoding value="utf-8"/>
    <preserveLogFileNameExtension value="true" />
    <staticLogFileName value="false" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <countDirection value="1" />
    <maxSizeRollBackups value="-1"/>
    <maximumFileSize value="100MB"/>
    <datePattern value="yyyy-MM-dd&quot;/Error.log&quot;" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>

  <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>
  <appender name="ColoredConsoleAppender" type="log4net.Appender.ManagedColoredConsoleAppender">
    <mapping>
      <level value="FATAL" />
      <level value="ERROR" />
      <foreColor  value="Red" />
    </mapping>
    <mapping>
      <level value="WARN" />
      <foreColor  value="Green" />
    </mapping>
    <mapping>
      <level value="INFO" />
      <level value="DEBUG" />
      <foreColor value="White" />
    </mapping>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %message%newline" />
    </layout>
  </appender>
  <appender name="ConsoleForwardingAppender" type="log4net.Appender.ForwardingAppender" >
    <threshold value="WARN"/>
    <appender-ref ref="ColoredConsoleAppender" />
  </appender>

  <root>
    <!--控制级别，由低到高: ALL|DEBUG|INFO|WARN|ERROR|FATAL|OFF-->
    <level value="ALL" />
    <appender-ref ref="DebugAppender" />
    <appender-ref ref="InfoAppender" />
    <appender-ref ref="WarnAppender" />
    <appender-ref ref="ErrorAppender" />
    <appender-ref ref="ConsoleForwardingAppender"/>
  </root>
</log4net>

appsettings.json

{
  "Swagger": {
    "Version": "1.01",
    "Name": "MicroserviceName"
  },
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": {
      "System": "Warning",
      "Microsoft": "Warning",
      "Microsoft.AspNetCore.Hosting.Diagnostics": "Warning", // 提供给第三方调用API日志
      "Microsoft.Hosting.Lifetime": "Warning",
      "System.Net.Http.HttpClient": "Warning", // 记录内部http请求
      "System.Net.Http.HttpClient.Default.ClientHandler": "None",
      "Microsoft.EntityFrameworkCore.Database.Command": "Warning",
      "Microsoft.EntityFrameworkCore.Database.Connection": "Warning"
    },
    "Debug": {
      "LogLevel": {
        //级别，由高到低: "ERROR"、"Warning"、"Information"、"DEBUG"
        "Default": "Information"
      }
    },
    "Console": {
      "LogLevel": {
        "Default": "ERROR"
      }
    }
  },
  "AllowedHosts": "*"
}

log4net初始化

using Microsoft.Extensions.Logging;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;

public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args)
    {
        return Host.CreateDefaultBuilder(args)
            .ConfigureLogging((hostingContext, logging) =>
            {
                logging.AddLog4Net(AppDomain.CurrentDomain.BaseDirectory + "log4net.config");
            })
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseStartup<Startup>();
                webBuilder.UseUrls("http://*:port");
            });
    }
}

Swagger设置

public void ConfigureServices(IServiceCollection services)
{
    // 增加Swagger文档界面
    string version = _configuration["Swagger:Version"];
    string name = _configuration["Swagger:Name"];
    services.AddSwaggerGen(c =>
    {
        c.CustomOperationIds(e => $"{e.ActionDescriptor.RouteValues["controller"]}_{e.ActionDescriptor.RouteValues["action"]}");
        c.SwaggerDoc(name, new OpenApiInfo { Title = name, Version = version, });
        var xmlFile = $"{System.Reflection.Assembly.GetExecutingAssembly().GetName().Name}.xml";
        var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
        c.IncludeXmlComments(xmlPath);

        // swagger鉴权
        c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme()
        {
            Description = "JWT Authorization header using the Bearer scheme. Example: "Authorization: Bearer {token}"",
            Name = "Authorization",
            In = ParameterLocation.Header,
            Type = SecuritySchemeType.ApiKey,
            BearerFormat = "JWT",
            Scheme = "Bearer"
        });
        c.AddSecurityRequirement(new OpenApiSecurityRequirement
        {
            {
                new OpenApiSecurityScheme{
                    Reference = new OpenApiReference {
                        Type = ReferenceType.SecurityScheme,
                        Id = "Bearer"}
                },new string[] { }
            }
        });
    });
}         
    
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILogger<Startup> logger)
{
    string version = _configuration["Swagger:Version"];
    string name = _configuration["Swagger:Name"];
    app.UseSwagger(s =>
    {
        s.SerializeAsV2 = true;
        s.RouteTemplate = "swagger/{documentName}/swagger.json";
    });
    app.UseSwaggerUI(s =>
    {
        s.DocumentTitle = name + "接口说明";
        s.SwaggerEndpoint($"/swagger/{name}/swagger.json", name);
    });
}

可访问swagger：http://localhost:port/swagger