.net core Web Api中使用log4net日志

1.建立一个.net core Web Api程序，使用nuget下载log4net

2.建立log4net.config文件

<?xml version="1.0" encoding="utf-8"?>
<log4net>
	<!-- 控制台日志配置 -->
	<appender name="Console" type="log4net.Appender.ConsoleAppender">
		<!-- 日志输出格式 -->
		<layout type="log4net.Layout.PatternLayout">
			<conversionPattern value="%5level [%thread] (%file:%line) - %message%newline" />
		</layout>
	</appender>
	<!-- 文件存储日志配置 -->
	<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
		<!-- 保存文件的名称 -->
		<file value="D:\log.log" />
		<appendToFile value="true" />
		<!-- 文件的编码方式 -->
		<param name="Encoding" value="UTF-8"/>
		<!-- 每个文件的大小 -->
		<maximumFileSize value="100KB" />
		<!-- 保存文件数量 -->
		<maxSizeRollBackups value="2" />
		<!-- 日志输出格式 -->
		<layout type="log4net.Layout.PatternLayout">
			<conversionPattern value="%level %thread %logger - %message%newline" />
		</layout>
	</appender>
	<root>
		<level value="ALL" />
		<appender-ref ref="Console" />
		<appender-ref ref="RollingFile" />
	</root>
</log4net>

3.在Program.cs中进行配置

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace WebApplication1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        //进行配置，支持ico
        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging=>
            {
                logging.AddLog4Net();
            })
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }
}

4.使用

 

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace WebApplication1.Controllers
{
    [ApiController]
    [Route("api/[controller]")]
    public class TestController : ControllerBase
    {
        public TestController(ILogger<TestController> logger )
        {
            Logger = logger;
        }

        public ILogger<TestController> Logger = null;

        [HttpGet]
        public string Get()
        {
            Logger.LogInformation("1", "3213","123");
            Logger.LogError("2", "3213", "1234");
            Logger.LogDebug("3", "3213", "1235");
            Logger.LogTrace("4", "3213", "1236");
            return ".net core-001";
        }
    }
}