ASP.NET Core 有内置的log组件,遗憾的是看了微软官方文档,貌似无法直接将日志存于文件或数据库,只能由自己实现或引用第三方日志组件。
以下为Nlog和log4net的使用记录
Nlog使用
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搜索添加Nuget包
Nlog
Nlog.Web.AspNetCore
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新建一个xml文件,并改名为nlog.config
XML内容如下(可配置日志目录名称、输出格式):
<?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true" internalLogLevel="Warn" internalLogFile="internal-nlog.txt"> <!--define various log targets--> <targets>
<!--write logs to file--> <target xsi:type="File" name="allfile" fileName="Logs/service-${shortdate}.log" layout="${longdate}|${logger}|${uppercase:${level}}|${message} ${exception}" />
</targets>
<rules> <!--All logs, including from Microsoft--> <logger name="*" minlevel="Trace" writeTo="allfile" /> </rules> </nlog>
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将nlog.config设置输出到目录
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在Startup类中配置
需要引入命名空间:
using NLog.Extensions.Logging;
using NLog.Web;
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactor) { //使用Nlog loggerFactor.AddNLog(); //引入配置文件 env.ConfigureNLog("nlog.config"); if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Error"); } app.UseStaticFiles(); app.UseCookiePolicy(); app.UseMvc(); }
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代码中的使用
有两中方式如下:
1、注入形式
public class IndexModel : PageModel { private ILogger<IndexModel> _logger; public IndexModel(ILogger<IndexModel> logger) { _logger = logger; } public string Customer { get; set; } public void OnGet() { _logger.LogWarning("111111111111111111111"); Customer = "123456"; } }
2、获取实例形式
private static Logger Logger = LogManager.GetCurrentClassLogger(); public static void Main(string[] args) { Logger.Error("22222222222222222222222222222"); Logger.Info("333333333333333333333333333333"); }
log4net
log4net已支持net core,来看下在net core下是如何配置的,与之前的版本还是有一点的区别
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使用惯例,引用Nuget
log4net
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新建配置文件
<?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=&quo