c# 日志生成

using System;
using System.IO;

/// <summary>
/// 打印error类
/// </summary>
public class LogUtil
{
    private string path = string.Empty;
    public LogUtil(string filePath, Enviroment enviroment)
    {
        switch (enviroment)
        {
            case Enviroment.HTTP:
                path = System.Web.Hosting.HostingEnvironment.MapPath(@"~/") + filePath;
                break;
            case Enviroment.CLIENT:
                path = Directory.GetCurrentDirectory() + "/" + filePath;
                break;
            default:
                break;
        }

        if (!Directory.Exists(path))
        {
            Directory.CreateDirectory(path);
        }
    }


    /// <summary>
    /// 日志写入
    /// </summary>
    /// <param name="str">要写入的字符串</param>
    /// <param name="isAppend">是否是文本追加</param>
    public void LogError(string str, bool isAppend = true)
    {
        StreamWriter fs = new StreamWriter(path + "/" + DateTime.Now.ToString("yyyyMMdd") + ".txt", isAppend);
        fs.WriteLine(DateTime.Now.ToString() + "---------" + str);
        fs.Close();
    }

    /// <summary>
    /// 程序运行环境
    /// </summary>
    public enum Enviroment
    {
        /// <summary>
        /// webapi环境
        /// </summary>
        HTTP,
        /// <summary>
        /// 客户端
        /// </summary>
        CLIENT
    }
}