C#.NET根据不同业务类别类型写入不同文件中，动态创建log4net实例验证

C#.NET根据不同业务类别类型写入不同文件中，动态创建log4net实例验证

参考了：https://www.cnblogs.com/-dawn/p/8598566.html

GetLog4netInstance：

using log4net;
using log4net.Appender;
using log4net.Config;
using log4net.Core;
using log4net.Filter;
using log4net.Layout;
using log4net.Repository;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection.Emit;
using System.Text;

namespace ConsoleApp1
{
    public class GetLog4netInstance
    {

        private static Dictionary<string, ILog> Logers = new Dictionary<string, ILog>();

        /// <summary>
        /// 获取log实例
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static ILog GetLogger(string name)
        {
            if (Logers.ContainsKey(name))
                return Logers[name];
            else
            {
                lock (Logers)
                {
                    if (Logers.ContainsKey(name))
                        return Logers[name];
                    else
                    {
                        var newLoger = CreateLogerInstance(name);
                        Logers.Add(name, newLoger);
                        return newLoger;
                    }
                }
            }
        }

        /// <summary>
        /// 创建Log实例
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        private static ILog CreateLogerInstance(string name)
        {
            // Pattern Layout
            //%d 时间，[%t] 线程ID，%-2.18M 方法名（最少2位，最多18位），%m%n 消息和换行
            string PatternStr = "%d [%t] %-2.18M - %m%n";
            PatternLayout layout = new PatternLayout(PatternStr);

            // Level Filter
            LevelMatchFilter filter = new LevelMatchFilter();
            filter.LevelToMatch = Level.All;
            filter.ActivateOptions();
            // File Appender
            RollingFileAppender appender = new RollingFileAppender();
            // 目录
            //appender.File = $"logs\\{name}\\"; //按名称单独一个目录
            appender.File = "logs\\"; // 所有名称放同一目录

            // 立即写入磁盘
            appender.ImmediateFlush = true;
            // true：追加到文件；false：覆盖文件
            appender.AppendToFile = true;
            // 新的日期或者文件大小达到上限，新建一个文件
            appender.RollingStyle = RollingFileAppender.RollingMode.Composite;
            // 文件大小达到上限，新建文件时，文件编号放到文件后缀前面
            appender.PreserveLogFileNameExtension = true;
            // 时间模式
            //appender.DatePattern = "yyyyMMdd'.txt'"; // 日期.txt
            appender.DatePattern = "'" + name + "-'" + "yyyyMMdd'.txt'"; // 名称-日期.txt，"'名称-'yyyyMMdd'.txt'"
            // 最小锁定模型以允许多个进程可以写入同一个文件
            appender.LockingModel = new FileAppender.MinimalLock();
            appender.Name = name+"Appender";
            appender.AddFilter(filter);
            appender.Layout = layout;
            appender.ActivateOptions();
            // 文件大小上限
            appender.MaximumFileSize = "100MB";
            // 设置无限备份=-1 ，最大备份数为30
            appender.MaxSizeRollBackups = 999;
            appender.StaticLogFileName = false;
            //create instance
            string repositoryName = name+"Repository";
            ILoggerRepository repository = LoggerManager.CreateRepository(repositoryName);
            BasicConfigurator.Configure(repository, appender);
            //After the log instance initialization, we can get the instance from the LogManager by the special log instance name. Then you can start your logging trip.
            ILog logger = LogManager.GetLogger(repositoryName, name);
            return logger;
        }
    }

}

使用：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            try
            {
                var AccountLoger = GetLog4netInstance.GetLogger("DD-子商户号");
                var BalanceLoger = GetLog4netInstance.GetLogger("A#.ZZ");

                int i = 0;
                while (i < 10)
                {
                    string msg = i + ":hello world。";
                    BalanceLoger.Debug(msg);
                    AccountLoger.Debug(msg);
                    i++;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("ex！"+ex.Message);
            }
            Console.WriteLine("结束！");
            Console.ReadKey();
        }
    }
}

效果：

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