因为工作需要需要在XP上运行一个C#编写的Winform插件，我就用Framework2.0，因为存在接口交互所以想保留交易过程的入参出参。
考虑到插件本身实施的因素，就没有使用Log4、NLog等成熟的日志插件。在网上搜索了一个是通过TextWriterTraceListener实现的，但是实际使用
过程中发现并没实现我想要的功能，于是乎自己重新造了个轮子，如果大家有需要可以参考下。
1 /// <summary>
2 /// 日志类型
3 /// </summary>
4 public enum LogType
5 {
6 Error,
7 Trace,
8 Info
9 }
10
11 /// <summary>
12 /// 日志类
13 /// 支持同步和异步
14 /// </summary>
15 public sealed class Logger
16 {
17
18 #region 变量|常量
19
20 /// <summary>
21 /// 用于Trace的组织输出的类别名称
22 /// </summary>
23 private const string error = "\r\n***********************EXCEPTION {0}***********************";
24
25 /// <summary>
26 /// 跟踪
27 /// </summary>
28 private const string trace = "\r\n*************************TRACE {0}*******************************";
29
30 /// <summary>
31 /// 信息
32 /// </summary>
33 private const string info = "\r\n****************************INFO {0}********************************";
34
35 /// <summary>
36 /// 1 仅控制台输出
37 /// 2 仅日志输出
38 /// 3 控制台+日志输出
39 /// </summary>
40 private static readonly int flag = 2; //可以修改成从配置文件读取
41
42 #endregion
43
44 #region 委托
45
46 private delegate void AsyncLogException(Exception ex);
47 private delegate void AyyncLog(string msg, LogType type);
48 private delegate void AsyncLogSqlCommand(SqlCommand cmd);
49 private delegate void AsyncLogSql(string sql, params SqlParameter[] parameter);
50
51 private static void BeginError(Exception ex)
52 {
53 if (null != ex)
54 {
55 string path = GetLogPath(LogType.Error);
56 //输出日志头
57 WriteLog(path, string.Format(error, DateTime.Now));
58 while (null != ex)
59 {
60 WriteLog(path, string.Format("{0} {1}\r\n{2}\r\nSource:{3}", ex.GetType().Name, ex.Message, ex.StackTrace, ex.Source));
61 ex = ex.InnerException;
62 }
63 }
64 }
65
66 private static void BeginTrace(string msg, LogType type)
67 {
68 if (string.IsNullOrEmpty(msg)) return;
69 string path = GetLogPath(type);
70 //输出日志头
71 WriteLog(path, string.Format(trace, DateTime.Now));
72 //输出日志内容
73 WriteLog(path, msg);
74 }
75 #endregion
76
77 #region IO操作
78 /// <summary>
79 /// 获取日志类型对应的日志存储环境
80 /// </summary>
81 /// <param name="type">日志类型</param>
82 /// <returns></returns>
83 private static string GetLogPath(LogType type)
84 {
85 DateTime time = DateTime.Now;
86 string subdir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs");
87 subdir = Path.Combine(subdir, type.ToString());
88 subdir = Path.Combine(subdir, time.ToString("yyyyMM"));
89 if (!Directory.Exists(subdir))
90 {
91 Directory.CreateDirectory(subdir);
92 }
93 string result = Path.Combine(subdir, time.ToString("yyyyMMdd") + ".log");
94 return result;
95 }
96
97 /// <summary>
98 /// 写入日志
99 /// </summary>
100 /// <param name="path">日志环境</param>
101 /// <param name="text">写入的文本值</param>
102 private static void WriteLog(string path, string text)
103 {
104 string filePath = Path.GetDirectoryName(path);
105 if (Directory.Exists(filePath) == false)
106 {
107 Directory.CreateDirectory(filePath);
108 }
109 if (File.Exists(path))
110 {
111 using (StreamWriter sw = File.AppendText(path))
112 {
113 sw.WriteLine(text + "\n");
114 sw.Flush();
115 sw.Close();
116 }
117 }
118 else
119 {
120 StreamWriter sr = File.CreateText(path);
121 sr.WriteLine(text + "\n");
122 sr.Flush();
123 sr.Close();
124 }
125 }
126 #endregion
127
128 #region 发布的方法
129 /// <summary>
130 /// 写入异常日志
131 /// </summary>
132 /// <param name="ex">异常对象</param>
133 /// <param name="isAsync">是否异步,默认异步</param>
134 public static void Error(Exception ex, bool isAsync = true)
135 {
136 if (isAsync)
137 new AsyncLogException(BeginError).BeginInvoke(ex, null, null);
138 else
139 BeginError(ex);
140 }
141
142 /// <summary>
143 /// 写入错误日志
144 /// </summary>
145 /// <param name="msg">错误信息</param>
146 /// <param name="isAsync">是否异步,默认异步</param>
147 public static void Error(string msg, bool isAsync = false)
148 {
149 if (isAsync)
150 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Error, null, null);
151 else
152 BeginTrace(msg, LogType.Error);
153 }
154
155 /// <summary>
156 /// 异步跟踪日志
157 /// </summary>
158 /// <param name="msg"></param>
159 public static void Trace(string msg, bool isAsync = true)
160 {
161 if (isAsync)
162 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Trace, null, null);
163 else
164 BeginTrace(msg, LogType.Trace);
165 }
166
167
168 /// <summary>
169 /// 写入日志信息,日志类型为info
170 /// </summary>
171 /// <param name="msg">日志信息</param>
172 /// <param name="isAsync">是否异步,默认异步</param>
173 public static void Info(string msg, bool isAsync = true)
174 {
175 if (isAsync)
176 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Info, null, null);
177 else
178 BeginTrace(msg, LogType.Info);
179 }
180 #endregion
181
182 }
183 }
调用代码:
private void button1_Click_1(object sender, EventArgs e)
{
Logger.Info("测试");
}
运行效果如下:
时间： 2024-08-29 07:51:04