.net6 ILogger日志保存到本地

1、新建一个LocalFileLogger的类

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public class LocalFileLogger : ILogger    {        private readonly string categoryName;        private readonly string basePath;          public LocalFileLogger(string categoryName)        {            this.categoryName = categoryName;            string[] fieldstrs = Enum.GetNames(typeof(LogLevel));            foreach (var item in fieldstrs)            {                basePath = Directory.GetCurrentDirectory().Replace("\\", "/") + "/Logs/"+$"/{item}/";                  if (Directory.Exists(basePath) == false)                {                    Directory.CreateDirectory(basePath);                }            }            basePath = Directory.GetCurrentDirectory().Replace("\\", "/") + "/Logs/";        }          public IDisposable BeginScope<TState>(TState state)        {            return default!;        }          public bool IsEnabled(LogLevel logLevel)        {            if (logLevel != LogLevel.None)            {                return true;            }            else            {                return false;            }        }          public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)        {            if (IsEnabled(logLevel))            {                if (state != null && state.ToString() != null)                {                    var logContent = state.ToString();                      if (logContent != null)                    {                        if (exception != null)                        {                            var logMsg = new                            {                                message = logContent,                                error = new                                {                                    exception?.Source,                                    exception?.Message,                                    exception?.StackTrace                                }                            };                              logContent = System.Text.Json.JsonSerializer.Serialize(logMsg);                        }                          var log = new                        {                            CreateTime = DateTime.UtcNow,                            Category = categoryName,                            Level = logLevel.ToString(),                            Content = logContent                        };                          string logStr = System.Text.Json.JsonSerializer.Serialize(log);                          string logPath=string.Empty;                        switch (logLevel)                        {                            case LogLevel.Trace:                             logPath= basePath + "/Trace/"+ DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.Debug:                                logPath = basePath + "/Debug/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.Information:                                logPath = basePath + "/Information/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.Warning:                                logPath = basePath + "/Warning/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.Error:                                logPath = basePath + "/Error/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.Critical:                                logPath = basePath + "/Critical/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            case LogLevel.None:                                logPath = basePath + "/None/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                            default:                                logPath = basePath + "/Start/" + DateTime.Now.ToString("yyyyMMddHH") + ".log";                                break;                        }                        File.AppendAllTextAsync(logPath, logStr + Environment.NewLine, System.Text.Encoding.UTF8);                                            }                                                        }            }        }    }

2、新建LocalFileLoggerProvider

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public class LocalFileLoggerProvider : ILoggerProvider {     private readonly System.Collections.Concurrent.ConcurrentDictionary<string, LocalFileLogger> loggers = new();       public ILogger CreateLogger(string categoryName)     {         return loggers.GetOrAdd(categoryName, new LocalFileLogger(categoryName));     }       public void Dispose()     {         loggers.Clear();         GC.SuppressFinalize(this);     } }

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