一个简易的日志程序

 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Text;
 6 using System.Threading.Tasks;
 7 using System.Web;
 8 
 9 
10 
11 namespace IST.Common.Utility
12 {
13     public class LogManager
14     {
15         /// <summary>
16         /// 当前目录路径
17         /// </summary>
18         public static string strPath;
19         //public static string strPath = HttpContext.Current.Server.MapPath("\\Log"); //System.Environment.CurrentDirectory;
20 
21         #region      判断是否存在日志文件夹，没有则创建一个
22         /// <summary>
23         /// 判断是否存在日志文件夹，没有则创建一个
24         /// </summary>
25         private static string ExsitsDirectory(LogType type)
26         {
27             string directoryName = strPath + "\\" + type.ToString();
28             try
29             {
30                 if (!Directory.Exists(directoryName))
31                 {
32                     Directory.CreateDirectory(directoryName);
33                 }
34             }
35             catch (Exception ex)
36             {
37 
38             }
39             return directoryName;
40         }
41         #endregion
42 
43 
44         #region  把信息写入日志文件
45         /// <summary>
46         /// 把信息写入日志文件
47         /// </summary>
48         /// <param name="errorMsg">日志文本</param>
49         /// <param name="type">日志类型</param>
50         public static void WriteLog(string errorMsg,LogType type)
51         {
52             try
53             {
54                 string directoryName = ExsitsDirectory(type);
55                 string fileName = directoryName + "\\" + DateTime.Now.ToString("yyyyMMdd") + ".log";
56                 if (!File.Exists(fileName))
57                 {
58                     FileStream fs = new FileStream(fileName, FileMode.Create);
59                     fs.Close();
60                 }
61                 StreamWriter sw = File.AppendText(fileName);
62                 sw.WriteLine("==========" + DateTime.Now.ToString() + "     " + errorMsg + "\n");
63                 sw.Close();
64             }
65             catch
66             {
67 
68             }
69         }
70         #endregion
71     }
72 
73     /// <summary>
74     /// 日志类型，用于区分日志应写入相应的文件中
75     /// </summary>
76     public enum LogType
77     {
78         /// <summary>
79         /// Bug
80         /// </summary>
81         Bug,
82         /// <summary>
83         /// 错误
84         /// </summary>
85         Error,
86         /// <summary>
87         /// 信息
88         /// </summary>
89         Info
90     }
91 }