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C#實現(xiàn)異步日志記錄類的示例代碼

更新時間：2023年11月10日 16:16:48 作者：愛吃奶酪的松鼠丶

這篇文章主要為大家詳細(xì)介紹了C#如何實現(xiàn)異步日志記錄類,從而方便下次使用,不用重復(fù)造輪子,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以了解下

先定義接口類：

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

namespace 異常
{
    internal interface ILog
    {
        Task WriteErrorLog(string message);

        Task WriteInfoLog(string message);

        Task WriteLog(string logType, string message);
    }
}

在去實現(xiàn)：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 異常
{
    internal class Log : ILog
    {
        public string LogDirectory { get; set; }
        public string TimeDirName { get; set; }

        private  string LogFileName { get; set; }

        private const long maxLogSize = 2*1024*1024; // 2 MB

        private string FirstLogFileName { get; set; }
        public Log() 
        {
            //在根目錄創(chuàng)建Log文件夾
            IOTools.CreatLogDir("Log");
            //初始化
            LogDirectory = Path.Combine(Directory.GetCurrentDirectory(), "Log");
            TimeDirName = DateTime.Now.ToString("yyyyMMdd");
            FirstLogFileName = $"log_{DateTime.Now:yyyyMMddHHmmss}.txt";
        }
        public async Task WriteErrorLog(string message)
        {
             await WriteLog("Error",message);
        }

        public async Task WriteInfoLog(string message)
        {
            await WriteLog("Info", message);
        }

        public async Task WriteLog(string logType ,string message)
        {
            //創(chuàng)建文件夾
            string dirType = TimeDirName + "\\" + logType;
            IOTools.CreatDir(dirType, LogDirectory);
            LogFileName=Path.Combine(LogDirectory, dirType, FirstLogFileName);
            if (!File.Exists(LogFileName))
            {
                using (StreamWriter sw = File.CreateText(LogFileName))
                {
                   await sw.WriteLineAsync($"【{logType}】 {DateTime.Now} \r\n {message}  \r\n \r\n");
                }
            }
            else
            {
                FileInfo fileInfo = new FileInfo(LogFileName);
                if (fileInfo.Length > maxLogSize)
                {
                    string newFileName = $"log_{DateTime.Now:yyyyMMddHHmmss}.txt";
                    LogFileName = Path.Combine(LogDirectory, dirType, newFileName);
                    using (StreamWriter sw = File.CreateText(LogFileName))
                    {
                        await sw.WriteLineAsync($"【{logType}】 {DateTime.Now} \r\n {message}  \r\n \r\n");
                    }
                }
                else
                {
                    using (StreamWriter sw = File.AppendText(LogFileName))
                    {
                        await sw.WriteLineAsync($"【{logType}】 {DateTime.Now} \r\n {message}  \r\n \r\n");
                    }
                }
            }
        }


    }
}

工具類：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace 異常
{
    internal  class IOTools
    {
        public static void CreatLogDir(string name)
        {
            string rootDirectory = Directory.GetCurrentDirectory();
            CreatDir(name, rootDirectory);
        }

        public static void CreatDir(string name , string path)
        {
            if(string.IsNullOrEmpty(name)) throw new ArgumentNullException("name");
            if(string.IsNullOrEmpty(path)) throw new ArgumentNullException("path");
            string logPath = Path.Combine(path, name);
            // 判斷文件夾是否存在
            if (!Directory.Exists(logPath))
            {
                // 在當(dāng)前項目根目錄創(chuàng)建一個新的文件夾
                Directory.CreateDirectory(logPath);
            }

        }
    }
}

最后實現(xiàn)的效果，簡潔明了

如圖：