NLog介绍和使用说明官网：
NLog和Log4net对比：https://www.cnblogs.com/qinjin/p/5134982.html
二、NLog集成步骤
下载模板项目，下载地址：https://aspnetboilerplate.com/Templates 选择.Net Core项目
新建一个.NET Standard类库项目Abp.Castle.NLog
添加NuGet包Castle.Core, Castle.LoggingFacility, NLog
参考abp log4net（ABP源码）添加class NLogLogger继承MarshalByRefObject并实现接口Castle.Core.Logging.ILogger
1 using System; 2 using System.Globalization; 3 using ILogger = Castle.Core.Logging.ILogger; 4 using NLogCore = NLog; 5 6 namespace Abp.Castle.Logging.NLog 7 { 8 [Serializable] 9 public class NLogLogger : 10 MarshalByRefObject, 11 ILogger 12 { 13 protected internal NLogCore.ILogger Logger { get; set; } 14 //protected internal NLogLoggerFactory Factory { get; set; } 15 16 public NLogLogger(NLogCore.ILogger logger) 17 { 18 Logger = logger; 19 } 20 21 internal NLogLogger() 22 { 23 } 24 25 public bool IsDebugEnabled => Logger.IsEnabled(NLogCore.LogLevel.Debug); 26 27 public bool IsErrorEnabled => Logger.IsEnabled(NLogCore.LogLevel.Error); 28 29 public bool IsFatalEnabled => Logger.IsEnabled(NLogCore.LogLevel.Fatal); 30 31 public bool IsInfoEnabled => Logger.IsEnabled(NLogCore.LogLevel.Info); 32 33 public bool IsWarnEnabled => Logger.IsEnabled(NLogCore.LogLevel.Warn); 34 35 public ILogger CreateChildLogger(string loggerName) 36 { 37 return new NLogLogger(NLogCore.LogManager.GetLogger(Logger.Name + "." + loggerName)); 38 } 39 40 public void Debug(string message) 41 { 42 Logger.Debug(message); 43 } 44 45 public void Debug(Func<string> messageFactory) 46 { 47 Logger.Debug(messageFactory); 48 } 49 50 public void Debug(string message, Exception exception) 51 { 52 Logger.Debug(exception, message); 53 } 54 55 public void DebugFormat(string format, params object[] args) 56 { 57 Logger.Debug(CultureInfo.InvariantCulture, format, args); 58 } 59 60 public void DebugFormat(Exception exception, string format, params object[] args) 61 { 62 Logger.Debug(exception, CultureInfo.InvariantCulture, format, args); 63 } 64 65 public void DebugFormat(IFormatProvider formatProvider, string format, params object[] args) 66 { 67 Logger.Debug(formatProvider, format, args); 68 } 69 70 public void DebugFormat(Exception exception, IFormatProvider formatProvider, string format, params object[] args) 71 { 72 Logger.Debug(exception, formatProvider, format, args); 73 } 74 75 public void Error(string message) 76 { 77 Logger.Error(message); 78 } 79 80 public void Error(Func<string> messageFactory) 81 { 82 Logger.Error(messageFactory); 83 } 84 85 public void Error(string message, Exception exception) 86 { 87 Logger.Error(exception, message); 88 } 89 90 public void ErrorFormat(string format, params object[] args) 91 { 92 Logger.Error(CultureInfo.InvariantCulture, format, args); 93 } 94 95 public void ErrorFormat(Exception exception, string format, params object[] args) 96 { 97 Logger.Error(exception, CultureInfo.InvariantCulture, format, args); 98 } 99 100 public void ErrorFormat(IFormatProvider formatProvider, string format, params object[] args) 101 { 102 Logger.Error(formatProvider, format, args); 103 } 104 105 public void ErrorFormat(Exception exception, IFormatProvider formatProvider, string format, params object[] args) 106 { 107 Logger.Error(exception, formatProvider, format, args); 108 } 109 110 public void Fatal(string message) 111 { 112 Logger.Fatal(message); 113 } 114 115 public void Fatal(Func<string> messageFactory) 116 { 117 Logger.Fatal(messageFactory); 118 } 119 120 public void Fatal(string message, Exception exception) 121 { 122 Logger.Fatal(exception, message); 123 } 124 125 public void FatalFormat(string format, params object[] args) 126 { 127 Logger.Fatal(CultureInfo.InvariantCulture, format, args); 128 } 129 130 public void FatalFormat(Exception exception, string format, params object[] args) 131 { 132 Logger.Fatal(exception, CultureInfo.InvariantCulture, format, args); 133 } 134 135 public void FatalFormat(IFormatProvider formatProvider, string format, params object[] args) 136 { 137 Logger.Fatal(formatProvider, format, args); 138 } 139 140 public void FatalFormat(Exception exception, IFormatProvider formatProvider, string format, params object[] args) 141 { 142 Logger.Fatal(exception, formatProvider, format, args); 143 } 144 145 public void Info(string message) 146 { 147 Logger.Info(message); 148 } 149 150 public void Info(Func<string> messageFactory) 151 { 152 Logger.Info(messageFactory); 153 } 154 155 public void Info(string message, Exception exception) 156 { 157 Logger.Info(exception, message); 158 } 159 160 public void InfoFormat(string format, params object[] args) 161 { 162 Logger.Info(CultureInfo.InvariantCulture, format, args); 163 } 164 165 public void InfoFormat(Exception exception, string format, params object[] args) 166 { 167 Logger.Info(exception, CultureInfo.InvariantCulture, format, args); 168 } 169 170 public void InfoFormat(IFormatProvider formatProvider, string format, params object[] args) 171 { 172 Logger.Info(formatProvider, format, args); 173 } 174 175 public void InfoFormat(Exception exception, IFormatProvider formatProvider, string format, params object[] args) 176 { 177 Logger.Info(exception, formatProvider, format, args); 178 } 179 180 public void Warn(string message) 181 { 182 Logger.Warn(message); 183 } 184 185 public void Warn(Func<string> messageFactory) 186 { 187 Logger.Warn(messageFactory); 188 } 189 190 public void Warn(string message, Exception exception) 191 { 192 Logger.Warn(exception, message); 193 } 194 195 public void WarnFormat(string format, params object[] args) 196 { 197 Logger.Warn(CultureInfo.InvariantCulture, format, args); 198 } 199 200 public void WarnFormat(Exception exception, string format, params object[] args) 201 { 202 Logger.Warn(exception, CultureInfo.InvariantCulture, format, args); 203 } 204 205 public void WarnFormat(IFormatProvider formatProvider, string format, params object[] args) 206 { 207 Logger.Warn(formatProvider, format, args); 208 } 209 210 public void WarnFormat(Exception exception, IFormatProvider formatProvider, string format, params object[] args) 211 { 212 Logger.Warn(exception, formatProvider, format, args); 213 } 214 } 215 }