58 lines
1.9 KiB
C#
58 lines
1.9 KiB
C#
using Microsoft.Extensions.Configuration;
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using System;
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using System.IO;
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using System.Text;
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/// <summary>
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/// 文件日志写入封装类，自动按日期分文件、超大小自动切割
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/// </summary>
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public class FileLog
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{
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private readonly IConfiguration _configuration;
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private readonly object _lockObj = new object(); // 独立锁，不依赖外部this
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public FileLog(IConfiguration configuration)
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{
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_configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
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}
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/// <summary>
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/// 写入日志内容到文件
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/// </summary>
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/// <param name="log">日志文本</param>
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public void WriteToFile(string log)
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{
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try
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{
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// 读取配置，转换最大文件字节数
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int maxMb = _configuration.GetValue<int>("Logging:MaxFileSizeMB");
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long maxFileSizeBytes = (long)maxMb * 1024 * 1024;
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string today = DateTime.Now.ToString("yyyyMMdd");
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string basePath = _configuration["Logging:LogFileDirectory"];
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Directory.CreateDirectory(basePath);
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string baseFileName = $"log-{today}";
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string ext = ".log";
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string finalPath = Path.Combine(basePath, $"{baseFileName}{ext}");
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int index = 1;
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// 文件超限则递增后缀切割
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while (File.Exists(finalPath) && new FileInfo(finalPath).Length >= maxFileSizeBytes)
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{
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finalPath = Path.Combine(basePath, $"{baseFileName}-{index}{ext}");
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index++;
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}
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// 线程安全写入
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lock (_lockObj)
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{
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File.AppendAllText(finalPath, log + Environment.NewLine, Encoding.UTF8);
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}
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}
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catch
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{
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// 原逻辑吞掉所有异常，如需日志可自行增加内部异常输出
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}
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}
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} |