引入nuget包
1.增加一个log4Net.config的文件
<?xml version="1.0" encoding="utf-8" ?> <log4net><appender name="DebugAppender" type="log4net.Appender.DebugAppender" ><layout type="log4net.Layout.PatternLayout"><conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /></layout></appender><!--指定日记记录方式，以滚动文件的方式（文件记录）--><appender name="RollingFile" type="log4net.Appender.RollingFileAppender"><!--日志路径--><file value="log\" /><!--是否是向文件中追加日志--><appendToFile value="true" /><!--log保留天数--><param name= "MaxSizeRollBackups" value= "10"/><!--每个文件最大3M--><param name="maximumFileSize" value="3MB" /><!--日志根据日期滚动--><param name="RollingStyle" value="Date" /><!--日志文件名格式为:logs_20230431.log--><param name="DatePattern" value=""logs_"yyyyMMdd".log"" /><!--日志文件名是否是固定不变的--><param name="StaticLogFileName" value="false" /><!--布局--><layout type="log4net.Layout.PatternLayout"><conversionPattern value="%date %5level %logger.%method [%line] - MESSAGE: %message%newline %exception" /></layout></appender><root><level value="ALL"/><appender-ref ref="DebugAppender" /><appender-ref ref="RollingFile" /></root> </log4net>
2.在program.cs中增加这段代码
3.增加帮助类
ILogHelper.cs
/// <summary>/// 日志工具接口类/// </summary>public interface ILogHelper{public void LogErr(string throwMsg, Exception ex);public void LogErr(string errkey, string errmsg);public void LogInfo(string key, string msg);public void LogInfo(string msg);}
Log4NetHelper.cs
/// <summary>/// log4net日志初始化 这里就读取多个配置节点/// </summary>public static class Log4NetHelper{private static readonly ILog _logError = LogManager.GetLogger(Assembly.GetCallingAssembly(), "LogError");private static readonly ILog _logNormal = LogManager.GetLogger(Assembly.GetCallingAssembly(), "LogNormal");private static readonly ILog _logAOP = LogManager.GetLogger(Assembly.GetCallingAssembly(), "LogAOP");public static void LogErr(string info, Exception ex){if (_logError.IsErrorEnabled){_logError.Error(info, ex);}}public static void LogErr(string message){if (_logError.IsErrorEnabled){_logError.Error(message);}}public static void LogNormal(string info){if (_logNormal.IsInfoEnabled){_logNormal.Info(info);}}public static void LogAOP(string key, string info){if (_logAOP.IsInfoEnabled){_logAOP.Info($"{key}:{info}");}}public static void LogAOP(string info){if (_logAOP.IsInfoEnabled){_logAOP.Info(info);}}}
LogHelper.cs
/// <summary>/// 日志工具实现类/// </summary>public class LogHelper : ILogHelper//<T> {private readonly ILogger _logger;public LogHelper(ILogger<LogHelper> logger){_logger = logger;}public void LogErr(string throwMsg, Exception ex){var errorMsg =$"【抛出信息】：{throwMsg} \r\n<br/>【异常类型】：{ex.GetType().Name} \r\n<br/>【异常信息】：{ex.Message} \r\n<br/>【堆栈调用】：\r\n<br/>{ex.StackTrace}\r\n<br/>【堆栈调用】：\r\n<br/>{ex.ToString()}";_logger.LogError(errorMsg);}public void LogErr(string errkey, string errmsg){_logger.LogError(errkey + ":" + errmsg);}public void LogInfo(string key, string msg){_logger.LogInformation(key + ":" + msg);}public void LogInfo(string msg){_logger.LogInformation(msg);}}
可以这样使用
Log4NetHelper.LogNormal(@$"读取失败，抛出异常：{ex.Message}{Environment.NewLine}堆栈跟踪:{ex.StackTrace}");
日志存放路径在bin文件下
