ASP.NET Core使用Log4net实现日志记录功能
时间：2022-07-04 14:06:09 | 栏目：.NET代码 | 点击：次
一、安装Log4net
1、使用Nuget包进行安装
在依赖项上面右键，选择“管理NuGet程序包”，如下图所示：
在浏览界面输入log4net，然后点击安装，如下图所示：
2、使用程序包管理器控制台进行安装
使用Install-Package Log4net命令进行安装，如下图所示：
二、配置log4net使用的配置文件
配置文件如下：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<!-- This section contains the log4net configuration settings -->
<log4net>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout" value="%date [%thread] %-5level %logger - %message%newline" />
</appender>
<appender name="FileAppender" type="log4net.Appender.FileAppender">
<file value="log-file.log" />
<appendToFile value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="D:\study\logfile/" /> //指定日志文件保存的目录
<appendToFile value="true" />
<rollingStyle value="Composite" />
<staticLogFileName value="false" />
<datePattern value="yyyyMMdd'.log'" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="1MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<level value="ALL" />
<appender-ref ref="ConsoleAppender" />
<appender-ref ref="FileAppender" />
<appender-ref ref="RollingLogFileAppender" />
</root>
</log4net>
</configuration>
三、在Startup.cs类里面配置使用log4net
public static ILoggerRepository repository { get; set; }
public Startup(IConfiguration configuration)
{
Configuration = configuration;
repository = LogManager.CreateRepository("NETCoreRepository");
// 指定配置文件
XmlConfigurator.Configure(repository, new FileInfo("log4net.config"));
}
四、在控制器里面注入log4net
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using log4net;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using NetCoreLogDemo.Models;
namespace NetCoreLogDemo.Controllers
{
public class HomeController : Controller
{
private ILog log;
public HomeController(IHostingEnvironment hostingEnv)
{
this.log = LogManager.GetLogger(Startup.repository.Name, typeof(HomeController));
}
public IActionResult Index()
{
log.Error("测试日志");
return View();
}
public IActionResult About()
{
ViewData["Message"] = "Your application description page.";
return View();
}
public IActionResult Contact()
{
ViewData["Message"] = "Your contact page.";
return View();
}
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
}
}
测试结果：
