.Net Core WebAPI写日志

下载log4net包并引入

定义接口

   public interface ILoggerHelper
    {
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Debug(object source, string message);
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="ps">ps</param>
        void Debug(object source, string message, params object[] ps);
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Debug(Type source, string message);
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Info(object source, object message);
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Info(Type source, object message);
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Warn(object source, object message);
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Warn(Type source, object message);
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Error(object source, object message);
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Error(Type source, object message);
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Fatal(object source, object message);
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        void Fatal(Type source, object message);

        /* Log a message object and exception */

        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Debug(object source, object message, Exception exception);
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Debug(Type source, object message, Exception exception);
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Info(object source, object message, Exception exception);
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Info(Type source, object message, Exception exception);
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Warn(object source, object message, Exception exception);
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Warn(Type source, object message, Exception exception);
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Error(object source, object message, Exception exception);
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Error(Type source, object message, Exception exception);
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Fatal(object source, object message, Exception exception);
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        void Fatal(Type source, object message, Exception exception);
    }

实现接口

 public class LoggerHelper : ILoggerHelper
    {
        private readonly ConcurrentDictionary<Type, ILog> Loggers = new ConcurrentDictionary<Type, ILog>();

        /// <summary>
        /// 获取记录器
        /// </summary>
        /// <param name="source">soruce</param>
        /// <returns></returns>
        private ILog GetLogger(Type source)
        {
            if (Loggers.ContainsKey(source))
            {
                return Loggers[source];
            }
            else
            {
                ILog logger = LogManager.GetLogger(Startup.Repository.Name, source);
                Loggers.TryAdd(source, logger);
                return logger;
            }
        }

        /* Log a message object */
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Debug(object source, string message)
        {
            Debug(source.GetType(), message);
        }
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="ps">ps</param>
        public void Debug(object source, string message, params object[] ps)
        {
            Debug(source.GetType(), string.Format(message, ps));
        }
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Debug(Type source, string message)
        {
            ILog logger = GetLogger(source);
            if (logger.IsDebugEnabled)
            {
                logger.Debug(message);
            }
        }
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Info(object source, object message)
        {
            Info(source.GetType(), message);
        }
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Info(Type source, object message)
        {
            ILog logger = GetLogger(source);
            if (logger.IsInfoEnabled)
            {
                logger.Info(message);
            }
        }
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Warn(object source, object message)
        {
            Warn(source.GetType(), message);
        }
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Warn(Type source, object message)
        {
            ILog logger = GetLogger(source);
            if (logger.IsWarnEnabled)
            {
                logger.Warn(message);
            }
        }
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Error(object source, object message)
        {
            Error(source.GetType(), message);
        }
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Error(Type source, object message)
        {
            ILog logger = GetLogger(source);
            if (logger.IsErrorEnabled)
            {
                logger.Error(message);
            }
        }
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Fatal(object source, object message)
        {
            Fatal(source.GetType(), message);
        }
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        public void Fatal(Type source, object message)
        {
            ILog logger = GetLogger(source);
            if (logger.IsFatalEnabled)
            {
                logger.Fatal(message);
            }
        }
        /* Log a message object and exception */

        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Debug(object source, object message, Exception exception)
        {
            Debug(source.GetType(), message, exception);
        }
        /// <summary>
        /// 调试信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Debug(Type source, object message, Exception exception)
        {
            GetLogger(source).Debug(message, exception);
        }
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Info(object source, object message, Exception exception)
        {
            Info(source.GetType(), message, exception);
        }
        /// <summary>
        /// 关键信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Info(Type source, object message, Exception exception)
        {
            GetLogger(source).Info(message, exception);
        }
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Warn(object source, object message, Exception exception)
        {
            Warn(source.GetType(), message, exception);
        }
        /// <summary>
        /// 警告信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Warn(Type source, object message, Exception exception)
        {
            GetLogger(source).Warn(message, exception);
        }
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Error(object source, object message, Exception exception)
        {
            Error(source.GetType(), message, exception);
        }
        /// <summary>
        /// 错误信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Error(Type source, object message, Exception exception)
        {
            GetLogger(source).Error(message, exception);
        }
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Fatal(object source, object message, Exception exception)
        {
            Fatal(source.GetType(), message, exception);
        }
        /// <summary>
        /// 失败信息
        /// </summary>
        /// <param name="source">source</param>
        /// <param name="message">message</param>
        /// <param name="exception">ex</param>
        public void Fatal(Type source, object message, Exception exception)
        {
            GetLogger(source).Fatal(message, exception);
        }
    }

用到的模型和和枚举

 public class LoggerModel
    {
        /// <summary>
        /// 错误信息
        /// </summary>
        public string Msg { get; set; }
        /// <summary>
        /// 错误方法名称
        /// </summary>
        public string MethodNames { get; set; }
        /// <summary>
        /// 日志等级
        /// </summary>
        public ErrorLevel ErrorLevel { get; set; }
        /// <summary>
        /// 参数列表
        /// </summary>
        public string Parameter { get; set; }
    }
       /// <summary>
        /// 错误级别
        /// </summary>
        public enum ErrorLevel
        {
            普通日志=1,
            警告日志=2,
            错误日志=3
        }

Log4配置文件

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
    </configSections>

    <system.web>
        <compilation debug="true" targetFramework="4.5.2" />
        <httpRuntime targetFramework="4.5.2" />
    </system.web>
    <log4net>
        <!--错误日志：：：记录错误日志-->
        <!--按日期分割日志文件 一天一个-->
        <!-- appender 定义日志输出方式   将日志以回滚文件的形式写到文件中。-->
        <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
            <!--保存路径：log、logError文件-->
            <file value="log/error/error_" />
            <!-- 如果想在本项目中添加路径，那就直接去掉C:\\  只设置log\\LogError   项目启动中默认创建文件 -->
            <appendToFile value="true"/>
            <!--按照何种方式产生多个日志文件(日期[Date],文件大小[Size],混合[Composite])-->
            <rollingStyle value="Date"/>
            <!--这是按日期产生文件夹-->
            <datePattern value="yyyy-MM-dd'.log'"/>
            <!--是否只写到一个文件中-->
            <staticLogFileName value="false"/>
            <!--保留的log文件数量 超过此数量后 自动删除之前的   好像只有在 按Size分割时有效 设定值value="－1"为不限文件数-->
            <param name="MaxSizeRollBackups" value="100"/>
            <!--每个文件的大小。只在混合方式与文件大小方式下使用。超出大小后在所有文件名后自动增加正整数重新命名，数字最大的最早写入。可用的单位:KB|MB|GB。不要使用小数,否则会一直写入当前日志-->
            <maximumFileSize value="50MB" />
            <!-- layout 控制Appender的输出格式，也可以是xml  一个Appender只能是一个layout-->
            <layout type="log4net.Layout.PatternLayout">
                <!--每条日志末尾的文字说明-->
                <!--输出格式 模板-->
                <!-- <param name="ConversionPattern"  value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 记录类：%logger   
        操作者ID：%property{Operator} 操作类型：%property{Action}%n  当前机器名:%property%n当前机器名及登录用户：%username %n  
        记录位置：%location%n 消息描述：%property{Message}%n   异常：%exception%n 消息：%message%newline%n%n" />-->

                <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
                <!--<conversionPattern value="%newline %n记录时间：%date %n线程ID:[%thread] %n日志级别： %-5level %n错误描述：%message%newline %n"/>-->
                <conversionPattern value="%n＝＝＝＝＝＝＝＝＝＝
                                  %n【日志级别】%-5level
                                  %n【记录时间】%date
                                  %n【执行时间】[%r]毫秒
                                  %n【错误位置】%logger 属性[%property{NDC}]
                                  %n【错误描述】%message
                                  %n【错误详情】%newline"/>
            </layout>
            <filter type="log4net.Filter.LevelRangeFilter,log4net">
                <levelMin value="ERROR" />
                <levelMax value="FATAL" />
            </filter>
        </appender>

        <!--DEBUG：：：记录DEBUG日志-->
        <!--按日期分割日志文件 一天一个-->
        <!-- appender 定义日志输出方式   将日志以回滚文件的形式写到文件中。-->
        <appender name="DebugAppender" type="log4net.Appender.RollingFileAppender">
            <!--保存路径：下面路径项目启动的时候自动创建log、logError文件-->
            <file value="log/debug/debug_" />
            <!-- 如果想在本项目中添加路径，那就直接去掉C:\\  只设置log\\LogError   项目启动中默认创建文件 -->
            <appendToFile value="true"/>
            <!--按照何种方式产生多个日志文件(日期[Date],文件大小[Size],混合[Composite])-->
            <rollingStyle value="Date"/>
            <!--这是按日期产生文件夹-->
            <datePattern value="yyyy-MM-dd'.log'"/>
            <!--是否只写到一个文件中-->
            <staticLogFileName value="false"/>
            <!--保留的log文件数量 超过此数量后 自动删除之前的   好像只有在 按Size分割时有效 设定值value="－1"为不限文件数-->
            <param name="MaxSizeRollBackups" value="100"/>
            <!--每个文件的大小。只在混合方式与文件大小方式下使用。超出大小后在所有文件名后自动增加正整数重新命名，数字最大的最早写入。可用的单位:KB|MB|GB。不要使用小数,否则会一直写入当前日志-->
            <maximumFileSize value="50MB" />
            <!-- layout 控制Appender的输出格式，也可以是xml  一个Appender只能是一个layout-->
            <layout type="log4net.Layout.PatternLayout">
                <!--每条日志末尾的文字说明-->
                <!--输出格式 模板-->
                <!-- <param name="ConversionPattern"  value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 记录类：%logger   
        操作者ID：%property{Operator} 操作类型：%property{Action}%n  当前机器名:%property%n当前机器名及登录用户：%username %n  
        记录位置：%location%n 消息描述：%property{Message}%n   异常：%exception%n 消息：%message%newline%n%n" />-->

                <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
                <!--<conversionPattern value="%newline %n记录时间：%date %n线程ID:[%thread] %n日志级别： %-5level %n错误描述：%message%newline %n"/>-->
                <conversionPattern value="%n＝＝＝＝＝＝＝＝＝＝
                                  %n【日志级别】%-2level
                                  %n【记录时间】%date
                                  %n【执行时间】[%r]毫秒
                                  %n【debug位置】%logger 属性[%property{NDC}]
                                  %n【debug描述】%message"/>
            </layout>
            <filter type="log4net.Filter.LevelRangeFilter,log4net">
                <levelMin value="DEBUG" />
                <levelMax value="WARN" />
            </filter>
        </appender>
        <!--Set root logger level to DEBUG and its only appender to A1-->
        <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="ErrorAppender" />
        </root>
    </log4net>
</configuration>

调用示例

logger.Info(typeof(OrderController), MethodBase.GetCurrentMethod().Name.ToString());
logger.Error(typeof(OrderController), MethodBase.GetCurrentMethod().Name.ToString(), ex);