在.Net Core下其實是自帶日誌組件的
在.net 2.1下,默認 配置已經配置好了
WebHost.CreateDefaultBuilder(args)//CreateDefaultBuilder 系統的默認配置
.UseStartup<Startup>();
直接可以在使用
private ITestService _TestService;
private IUserInfo _UserInfo;
private readonly ILogger<testController> _logger;
public testController(ITestService TestService,
IUserInfo UserInfo,
ILogger<testController> logger) {
this._TestService = TestService;
_UserInfo = UserInfo;
_logger = logger;
}
可以調用方法如 this._logger.LogInformation("logtest");寫日誌,日誌會輸出到控制檯中
當然我們可以使用第三方的日誌框架來使用,比如說log4net
方法
使用nuget安裝log4net
編寫log4net.config配置文件,這裏可以直接使用之前.net frarmework版本下使用過的配置文件
<?xml version="1.0" encoding="utf-8" ?>
<log4net>
<appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
<!--日誌路徑-->
<file value="Log/Info/" />
<!--是否是向文件中追加日誌-->
<appendToFile value="true" />
<!--日誌根據日期滾動-->
<rollingStype value="Date" />
<!--日誌文件名格式爲:2017.06.01.log-->
<datePattern value="yyyy.MM.dd.'log'" />
<!-- true:<file value="Log/*.log" />-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<!--每條日誌末尾的文字說明-->
<!--輸出格式-->
<!--樣例:2008-03-26 13:42:32,111 [10] INFO Log4NetDemo.MainClass [(null)] - info-->
<conversionPattern value="%n==============================
%n【記錄時間】:%date%n【線程編號】: [%thread] %n【日誌級別】:%p %n【出錯的類】:%logger 屬性[%property{NDC}] %n【錯誤描述】:%message %n【錯誤詳情】: %newline"/>
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="INFO" />
<param name="LevelMax" value="INFO" />
</filter>
</appender>
<appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
<!--日誌路徑-->
<file value="Log/Error/" />
<!--是否是向文件中追加日誌-->
<appendToFile value="true" />
<!--日誌根據日期滾動-->
<rollingStype value="Date" />
<!--日誌文件名格式爲:2017.06.01.log-->
<datePattern value="yyyy.MM.dd.'log'" />
<!-- true:<file value="Log/*.log" />-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<!--每條日誌末尾的文字說明-->
<!--輸出格式-->
<!--樣例:2008-03-26 13:42:32,111 [10] INFO Log4NetDemo.MainClass [(null)] - info-->
<!--<conversionPattern value="%n==============================
%n記錄時間:%date %n線 程ID:[%thread] %n日誌級別:%p %n出 錯 類:%logger %n錯誤描述:%message%newline "/>-->
<conversionPattern value="%n==============================
%n【記錄時間】:%date%n【線程編號】: [%thread] %n【日誌級別】:%p %n【出錯的類】:%logger 屬性[%property{NDC}] %n【錯誤描述】:%message %n【錯誤詳情】: %newline"/>
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="ERROR" />
<param name="LevelMax" value="ERROR" />
</filter>
</appender>
<!--寫入SqlServer-->
<appender name="ADONetAppender" type="log4net.Appender.ADONetAppender">
<bufferSize value="1" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="DATABASE=mymis;SERVER=192.168.8.36;UID=sa;PWD=123;Connect Timeout=15;" />
<commandText value="INSERT INTO ErrorLog ([dtDate],[sThread],[sLevel],[sLogger],[sMessage],[sException]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
<parameter>
<parameterName value="@log_date" />
<dbType value="DateTime" />
<layout type="log4net.Layout.RawTimeStampLayout" />
</parameter>
<parameter>
<parameterName value="@thread" />
<dbType value="String" />
<size value="100" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%t" />
</layout>
</parameter>
<parameter>
<parameterName value="@log_level" />
<dbType value="String" />
<size value="200" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%p" />
</layout>
</parameter>
<parameter>
<parameterName value="@logger" />
<dbType value="String" />
<size value="500" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger" />
</layout>
</parameter>
<parameter>
<parameterName value="@message" />
<dbType value="String" />
<size value="3000" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%m" />
</layout>
</parameter>
<parameter>
<parameterName value="@exception" />
<dbType value="String" />
<size value="4000" />
<layout type="log4net.Layout.ExceptionLayout" />
</parameter>
</appender>
<!-- OFF, FATAL, ERROR, WARN, INFO, DEBUG, ALL -->
<root>
<level value="ALL" />
<appender-ref ref="InfoAppender"/>
<appender-ref ref="ErrorAppender" />
<!--寫入SqlServer-->
<appender-ref ref="ADONetAppender"/>
</root>
<!--<logger name="Sql">
<level value="ALL"/>
<appender-ref ref="ADONetAppender"/>
</logger>-->
</log4net>
在Starup文件中Configure方法裏注入組件
首先要創建一個 ILoggerRepository
//log4net日誌
public static ILoggerRepository repository { get; set; }
然後在Configure注入
//加載log4net日誌配置文件
var repositoryName = ConfigHelper.GetValue("Log4NetRepository");
repository = LogManager.CreateRepository(repositoryName);
XmlConfigurator.Configure(repository, new FileInfo("log4net.config"));
這樣就可以調用了,調用方法如下,注入ILogger後就可以使用了
private ITestService _TestService;
private IUserInfo _UserInfo;
private readonly ILogger<testController> _logger;
public testController(ITestService TestService,
IUserInfo UserInfo,
ILogger<testController> logger) {
this._TestService = TestService;
_UserInfo = UserInfo;
_logger = logger;
}
public IActionResult Index()
{
this._logger.LogInformation("logtest");
return View();
}