初始化版本
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LL
279
SLC1-N/mxlLog.cs
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279
SLC1-N/mxlLog.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.IO;
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using System.Threading;
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using SLC1_N;
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namespace SLC1_N
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{
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public class mxlLog // 日志文件类
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{
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// 日志级别
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public enum LogLevel
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{
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LOG_DEBUG,
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LOG_INFO,
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LOG_WARNING,
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LOG_ERROR,
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LOG_XXX
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};
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// 单例实例
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private static readonly mxlLog instance = new mxlLog();
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public static mxlLog Instance { get { return instance; } }
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private readonly object mutex = new object();
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private string logDir;
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private string logPrefix = "log_";
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private long maxFileSize = 10 * 1024 * 1024; // 10MB
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private int maxBackupFiles = 5; // 允许文件最大备份数
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private LogLevel minLevel = LogLevel.LOG_DEBUG; // 记录级别，大于则生成文件
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// 标志位控制
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public bool IsDebugEnabled { get; set; } = false;
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public bool IsInfoEnabled { get; set; } = false;
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public bool IsWarningEnabled { get; set; } = false;
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public bool IsErrorEnabled { get; set; } = false;
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public bool IsXXXEnabled { get; set; } = false;
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// 构造函数 - 自动初始化到当前目录
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private mxlLog()
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{
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// 自动设置为软件当前目录下的Logs文件夹
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logDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Logs");
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minLevel = LogLevel.LOG_DEBUG;
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// 确保日志目录存在
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if (!Directory.Exists(logDir))
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{
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Directory.CreateDirectory(logDir);
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}
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}
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// 初始化
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public void Initialize(string dir = null, // 修改日志目录
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string prefix = null, // 修改日志文件名前缀
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long? maxSize = null, // 限制单个日志文件最大
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int? maxBackups = null,// 最多保留备份数
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LogLevel? minLevel = null, // 只写入xxx及以上级别
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bool? isDebugEnabled = null, bool? isInfoEnabled = null, // 写入使能
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bool? isWarningEnabled = null, bool? isErrorEnabled = null,
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bool? isXXXEnabled = null)
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{
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lock (mutex)
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{
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this.logDir = dir ?? this.logDir;
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this.logPrefix = prefix ?? this.logPrefix;
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this.maxFileSize = maxSize ?? this.maxFileSize;
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this.maxBackupFiles = maxBackups ?? this.maxBackupFiles;
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this.minLevel = minLevel ?? this.minLevel;
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// 设置标志位
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IsDebugEnabled = isDebugEnabled ?? IsDebugEnabled;
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IsInfoEnabled = isInfoEnabled ?? IsInfoEnabled;
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IsWarningEnabled = isWarningEnabled ?? IsWarningEnabled;
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IsErrorEnabled = isErrorEnabled ?? IsErrorEnabled;
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IsXXXEnabled = isXXXEnabled ?? IsXXXEnabled;
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if (!Directory.Exists(logDir))
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{
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Directory.CreateDirectory(logDir);
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}
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}
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}
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// 写入日志
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public void Write(LogLevel level, string message, Exception ex = null)
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{
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if (!IsLevelEnabled(level) || level < minLevel) // 检查使能
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return;
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lock (mutex)
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{
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try
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{
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string logFile = GetCurrentLogFilePath();
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CheckFileSize(logFile);
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string logEntry = $"{GetCurrentTimeStamp()} [{GetLevelString(level)}] {message}";
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if (ex != null)
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{
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logEntry += $"\nException: {ex.GetType().Name}\nMessage: {ex.Message}\nStack Trace: {ex.StackTrace}";
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}
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File.AppendAllText(logFile, logEntry + Environment.NewLine);
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}
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catch (Exception logEx)
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{
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HandleLogFailure(logEx);
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}
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}
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}
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// 清理旧日志文件
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public void ClearOldLogs(int keepDays = 30)
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{
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try
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{
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lock (mutex)
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{
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if (!Directory.Exists(logDir))
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return;
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var cutoffDate = DateTime.Now.AddDays(-keepDays); // 截止日期
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var allLogFiles = Directory.GetFiles(logDir, $"{logPrefix}*.log*"); // 筛选
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foreach (var file in allLogFiles)
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{
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try
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{
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// 尝试从文件名中解析日期
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var fileName = Path.GetFileNameWithoutExtension(file);
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if (fileName.StartsWith(logPrefix))
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{
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var datePart = fileName.Substring(logPrefix.Length); //去掉前缀，获取日期部分
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// 尝试解析日期 yyyyMMdd
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if (datePart.Length >= 8 && // 日期是否8个字符("20250101") 则存到fileDate
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DateTime.TryParseExact(datePart.Substring(0, 8), "yyyyMMdd", null, System.Globalization.DateTimeStyles.None, out var fileDate))
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{
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if (fileDate < cutoffDate) // 对比日期
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{
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File.Delete(file);
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Write(LogLevel.LOG_INFO, $"删除旧日志文件: {file}");
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}
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}
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else if (File.Exists(file)) // 对于log.1, .log.2，检查最后修改时间
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{
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var lastWriteTime = File.GetLastWriteTime(file);
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if (lastWriteTime < cutoffDate)
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{
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File.Delete(file);
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Write(LogLevel.LOG_INFO, $"删除旧日志备份: {file}");
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}
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}
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}
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}
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catch (Exception ex)
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{
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Write(LogLevel.LOG_ERROR, $"删除旧日志文件失败: {file}", ex);
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}
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}
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}
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}
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catch (Exception ex)
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{
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Write(LogLevel.LOG_ERROR, "清除旧日志失败", ex);
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}
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}
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// 快捷方法
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public void Debug(string message) => Write(LogLevel.LOG_DEBUG, message);
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public void Info(string message) => Write(LogLevel.LOG_INFO, message);
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public void Warning(string message, Exception ex = null) => Write(LogLevel.LOG_WARNING, message, ex);
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public void Error(string message, Exception ex = null) => Write(LogLevel.LOG_ERROR, message, ex);
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public void XXX(string message, Exception ex = null) => Write(LogLevel.LOG_XXX, message, ex);
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public void MESDebug(string message) => Write(LogLevel.LOG_DEBUG, $"[MES] {message}");
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#region 私有方法
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// 获取使能
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private bool IsLevelEnabled(LogLevel level)
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{
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switch (level)
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{
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case LogLevel.LOG_DEBUG: return IsDebugEnabled;
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case LogLevel.LOG_INFO: return IsInfoEnabled;
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case LogLevel.LOG_WARNING: return IsWarningEnabled;
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case LogLevel.LOG_ERROR: return IsErrorEnabled;
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case LogLevel.LOG_XXX: return IsXXXEnabled;
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default: return true;
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}
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}
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// 生成当前日志文件的完整路径
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private string GetCurrentLogFilePath()
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{
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string dateStamp = DateTime.Now.ToString("yyyyMMdd");
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return Path.Combine(logDir, $"{logPrefix}{dateStamp}.log");
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}
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// 超过大小，触发轮转（当前备份，重新新建）
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private void CheckFileSize(string logFile)
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{
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if (!File.Exists(logFile)) return;
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FileInfo fileInfo = new FileInfo(logFile);
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if (fileInfo.Length >= maxFileSize)
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{
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RotateLogFiles(logFile);
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}
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}
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// 实现日志轮转
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private void RotateLogFiles(string currentLogFile)
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{
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for (int i = maxBackupFiles - 1; i >= 1; i--)
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{
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string source = $"{currentLogFile}.{i}";
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string dest = $"{currentLogFile}.{i + 1}";
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if (File.Exists(source))
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{
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File.Move(source, dest);
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}
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}
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if (File.Exists(currentLogFile))
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{
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File.Move(currentLogFile, $"{currentLogFile}.1");
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}
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}
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private string GetCurrentTimeStamp()
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{
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return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
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}
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private string GetLevelString(LogLevel level)
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{
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switch (level)
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{
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case LogLevel.LOG_DEBUG: return "DEBUG";
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case LogLevel.LOG_INFO: return "INFO";
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case LogLevel.LOG_WARNING: return "WARNING";
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case LogLevel.LOG_ERROR: return "ERROR";
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case LogLevel.LOG_XXX: return "XXX";
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default: return "UNKNOWN";
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}
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}
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// 主日志系统失败（如磁盘满、权限问题）
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private void HandleLogFailure(Exception ex)
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{
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try
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{
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string fallbackPath = Path.Combine(
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Environment.GetFolderPath(Environment.SpecialFolder.Desktop),
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"LL_log_fallback.txt");
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File.AppendAllText(fallbackPath,
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$"{GetCurrentTimeStamp()} [LOG_ERROR] Failed to write log: {ex.Message}" +
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Environment.NewLine);
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}
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catch { /* 最终保底措施 */ }
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}
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#endregion
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}
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}
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// 使用方法 ： mxlLog.Instance.Error($"异常 ,行号{ex.StackTrace} ", ex);
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// mxlLog.Instance.IsErrorEnabled = true; 使能错误log
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// mxlLog.Instance.ClearOldLogs(5); 清理日志，仅保留近5天
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