初始化

Face.Log4Net/LoggerFactory.cs

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+using log4net;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Face.Log4Net
+{
+    /// <summary>
+    /// Logger 工厂
+    /// </summary>
+    class LoggerFactory
+    {
+        private static Dictionary<string, ILog> dicLog = new Dictionary<string, ILog>();
+
+        /// <summary>
+        /// 创建实例 ，默认读取App_Data 下的log4net.config文件
+        /// </summary>
+        /// <param name="loggerName"></param>
+        /// <returns></returns>
+        public static ILog CreateInstance(string loggerName)
+        {
+            return CreateInstance(loggerName, null);
+        }
+        /// <summary>
+        /// 创建实例
+        /// </summary>
+        /// <param name="loggerName"></param>
+        /// <param name="configFilename">log4net.config文件路径</param> 
+        /// <returns></returns>
+        public static ILog CreateInstance(string loggerName, string configFilename)
+        {
+            if (!dicLog.ContainsKey(loggerName))
+            {
+                if (string.IsNullOrWhiteSpace(configFilename))
+                {
+                    configFilename = Directory.GetParent(AppDomain.CurrentDomain.BaseDirectory).FullName + "\\App_Data\\configs\\log4net.config";
+                }
+
+                log4net.Config.XmlConfigurator.Configure(new FileInfo(configFilename));
+                //从配置文件中读取Logger对象  
+                //WebLogger 里面的配置信息是用来将日志录入到数据库的
+                //做为扩展 做判断来确定日志的记录形式，数据库也好，txt文档也好，控制台程序也好。
+                var log = log4net.LogManager.GetLogger(loggerName);
+
+                //防止并发出错
+                if (!dicLog.ContainsKey(loggerName))
+                {
+                    dicLog.Add(loggerName, log);
+                }
+                return log;
+            }
+            else
+            {
+                return dicLog[loggerName];
+            }
+        }
+    }
+}