private static void Main(string[] args)
{
string str = null;
Logger.InitUserLogWithRotation(); // <--- error occur
...
}
当我构建项目时，它没有错误。但是当我执行它时，它总是中止。
我尝试调试项目，但在第一行出现 System.TypeInitializationException 错误。
我已经尝试谷歌搜索，但没有找到解决方案。
似乎有任何变量初始化代码错误，但找不到它。
请帮帮我。我是 C# 新手。
谢谢。
※ 这是Logger类代码
public class Logger
{
private static int HDLOG_PRIORITY_DEBUG = 4;
private static int HDLOG_PRIORITY_ERROR = 1;
private static int HDLOG_PRIORITY_FATAL = 0;
private static int HDLOG_PRIORITY_INFO = 3;
private static int HDLOG_PRIORITY_WARNING = 2;
public static int LOG_LEVEL_DEBUG = 4;
public static int LOG_LEVEL_ERROR = 2;
public static int LOG_LEVEL_FATAL = 1;
public static int LOG_LEVEL_INFO = 5;
public static int LOG_LEVEL_WARNING = 3;
private static string s_bstCommonAppData = Path.Combine(s_commonAppData, "XXXX");
private static string s_bstUserDataDir = Path.Combine(s_bstCommonAppData, "UserData");
private static string s_commonAppData = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
private static bool s_consoleLogging = false;
private static FileStream s_fileStream;
public static HdLoggerCallback s_HdLoggerCallback;
private static string s_logDir = null;
private static string s_logFileName = "XXXX";
private static string s_logFilePath = null;
public static int s_logFileSize = 0xa00000;
private static bool s_loggerInited = false;
private static string s_logLevels = null;
private static int s_logRotationTime = 0x7530;
private static string s_logStringDebug = "DEBUG";
private static string s_logStringError = "ERROR";
private static string s_logStringFatal = "FATAL";
private static string s_logStringInfo = "INFO";
private static string s_logStringWarning = "WARNING";
private static int s_processId = -1;
private static string s_processName = "Unknown";
private static object s_sync = new object();
public static int s_totalLogFileNum = 5;
private static TextWriter writer = Console.Error;
private static void Close()
{
if (!s_consoleLogging)
{
writer.Close();
s_fileStream.Dispose();
writer.Dispose();
}
}
public static void Debug(string msg)
{
Debug("{0}", new object[] { msg });
}
public static void Debug(string fmt, params object[] args)
{
Print(LOG_LEVEL_DEBUG, s_processName, fmt, args);
}
private static void DoLogRotation()
{
Label_0000:
Thread.Sleep(s_logRotationTime);
try
{
lock (s_sync)
{
FileInfo info = new FileInfo(s_logFilePath);
if (info.Length >= s_logFileSize)
{
string destFileName = s_logFilePath + ".1";
string path = s_logFilePath + "." + s_totalLogFileNum;
if (File.Exists(path))
{
File.Delete(path);
}
for (int i = s_totalLogFileNum - 1; i >= 1; i--)
{
string str3 = s_logFilePath + "." + i;
string str4 = s_logFilePath + "." + (i + 1);
if (File.Exists(str3))
{
File.Move(str3, str4);
}
}
File.Move(s_logFilePath, destFileName);
}
}
goto Label_0000;
}
catch (Exception)
{
goto Label_0000;
}
}
public static void Error(string msg)
{
Error("{0}", new object[] { msg });
}
public static void Error(string fmt, params object[] args)
{
Print(LOG_LEVEL_ERROR, s_processName, fmt, args);
}
public static void Fatal(string msg)
{
Fatal("{0}", new object[] { msg });
}
public static void Fatal(string fmt, params object[] args)
{
Print(LOG_LEVEL_FATAL, s_processName, fmt, args);
}
private static string GetLogDir(bool userSpecificLog)
{
string str;
if (s_logDir != null)
{
return s_logDir;
}
try
{
if (userSpecificLog)
{
str = Path.Combine(s_bstUserDataDir, "Logs");
}
else
{
str = (string) Registry.LocalMachine.OpenSubKey(@"Software\XXXX").GetValue("LogDir");
}
}
catch (Exception)
{
str = Path.Combine(s_bstUserDataDir, "Logs");
}
s_logDir = str;
return str;
}
private static string GetPrefix(string tag, string logLevel)
{
int managedThreadId = Thread.CurrentThread.ManagedThreadId;
DateTime now = DateTime.Now;
return string.Format("{0:D4}-{1:D2}-{2:D2} {3:D2}:{4:D2}:{5:D2}.{6:D3} {7}:{8:X8} ({9}). {10}: ", new object[] { now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second, now.Millisecond, s_processId, managedThreadId, tag, logLevel });
}
public static TextWriter GetWriter()
{
return new Writer(delegate (string msg) {
Print(msg);
});
}
private static void HdLogger(int prio, uint tid, string tag, string msg)
{
int level = 0;
if (prio == HDLOG_PRIORITY_FATAL)
{
level = LOG_LEVEL_FATAL;
}
else if (prio == HDLOG_PRIORITY_ERROR)
{
level = LOG_LEVEL_ERROR;
}
else if (prio == HDLOG_PRIORITY_WARNING)
{
level = LOG_LEVEL_WARNING;
}
else if (prio == HDLOG_PRIORITY_INFO)
{
level = LOG_LEVEL_INFO;
}
else if (prio == HDLOG_PRIORITY_DEBUG)
{
level = LOG_LEVEL_DEBUG;
}
Print(level, tag, "{0:X8}: {1}", new object[] { tid, msg });
}
public static void Info(string msg)
{
Info("{0}", new object[] { msg });
}
public static void Info(string fmt, params object[] args)
{
Print(LOG_LEVEL_INFO, s_processName, fmt, args);
}
public static void InitConsoleLog()
{
InitLog("-", true, false);
}
public static void InitLog(string logFileName, bool userSpecificLog, bool doLogRotation)
{
s_loggerInited = true;
s_HdLoggerCallback = new HdLoggerCallback(Logger.HdLogger);
s_processId = Process.GetCurrentProcess().Id;
s_processName = Process.GetCurrentProcess().ProcessName;
if (logFileName == "-")
{
writer = Console.Error;
s_consoleLogging = true;
}
else
{
if (logFileName == null)
{
logFileName = s_logFileName;
}
if (userSpecificLog)
{
logFileName = logFileName + "Users";
}
string logDir = GetLogDir(userSpecificLog);
string str2 = string.Format(@"{0}\{1}.log", logDir, logFileName);
if (!Directory.Exists(logDir))
{
Directory.CreateDirectory(logDir);
}
s_logFilePath = str2;
LogLevelsInit();
lock (s_sync)
{
Open();
}
if (doLogRotation)
{
new Thread(() => DoLogRotation()) { IsBackground = true }.Start();
}
}
}
public static void InitSystemLog()
{
InitLog(null, false, false);
}
public static void InitSystemLogWithRotation()
{
InitLog(null, false, true);
}
public static void InitUserLog()
{
InitLog(null, true, false);
}
public static void InitUserLogWithRotation()
{
InitLog(null, true, true);
}
private static bool IsLogLevelEnabled(string tag, string level)
{
if (s_logLevels == null)
{
return false;
}
return (s_logLevels.StartsWith("ALL") || s_logLevels.Contains((tag + ":" + level).ToUpper()));
}
private static void LogLevelsInit()
{
string name = @"Software\XXXX\Config";
try
{
using (RegistryKey key = Registry.LocalMachine.OpenSubKey(name))
{
s_logLevels = (string) key.GetValue("DebugLogs");
}
}
catch (Exception)
{
return;
}
if (s_logLevels != null)
{
s_logLevels = s_logLevels.ToUpper();
}
}
private static void Open()
{
if (!s_consoleLogging)
{
if (!s_loggerInited)
{
InitLog("-", false, false);
s_loggerInited = true;
}
else
{
s_fileStream = new FileStream(s_logFilePath, FileMode.Append, FileAccess.Write, FileShare.Delete | FileShare.ReadWrite);
writer = new StreamWriter(s_fileStream, Encoding.UTF8);
}
}
}
public static void Print(string msg)
{
Print("{0}", new object[] { msg });
}
public static void Print(string fmt, params object[] args)
{
Print(LOG_LEVEL_INFO, s_processName, fmt, args);
}
public static void Print(int level, string tag, string fmt, params object[] args)
{
string str = "UNKNOWN";
if (level == LOG_LEVEL_FATAL)
{
str = s_logStringFatal;
}
else if (level == LOG_LEVEL_ERROR)
{
str = s_logStringError;
}
else if (level == LOG_LEVEL_WARNING)
{
str = s_logStringWarning;
}
else if (level == LOG_LEVEL_INFO)
{
str = s_logStringInfo;
}
else if (level == LOG_LEVEL_DEBUG)
{
str = s_logStringDebug;
}
if ((level != LOG_LEVEL_DEBUG) || IsLogLevelEnabled(tag, str))
{
lock (s_sync)
{
Open();
writer.WriteLine(GetPrefix(tag, str) + fmt, args);
writer.Flush();
Close();
}
}
}
public static void SetLogDir(string logDir)
{
s_logDir = logDir;
}
public static void Warning(string msg)
{
Warning("{0}", new object[] { msg });
}
public static void Warning(string fmt, params object[] args)
{
Print(LOG_LEVEL_WARNING, s_processName, fmt, args);
}
public delegate void HdLoggerCallback(int prio, uint tid, string tag, string msg);
public class Writer : TextWriter
{
private WriteFunc writeFunc;
public Writer(WriteFunc writeFunc)
{
this.writeFunc = writeFunc;
}
public override void WriteLine(string msg)
{
this.writeFunc(msg);
}
public override void WriteLine(string fmt, object obj)
{
this.writeFunc(string.Format(fmt, obj));
}
public override void WriteLine(string fmt, object[] objs)
{
this.writeFunc(string.Format(fmt, objs));
}
public override System.Text.Encoding Encoding
{
get
{
return System.Text.Encoding.UTF8;
}
}
public delegate void WriteFunc(string msg);
}
}
最佳答案
每当抛出 TypeInitializationException 时，在抛出异常的语句中检查您第一次引用的类型的所有初始化逻辑 - 在您的例子中:Logger.
初始化逻辑包括:类型的静态构造函数(如果我没有遗漏的话 - 您没有 Logger)和字段初始化。
Logger 中的字段初始化几乎是“不重要的”，除了以下几行:
private static string s_bstCommonAppData = Path.Combine(s_commonAppData, "XXXX");
private static string s_bstUserDataDir = Path.Combine(s_bstCommonAppData, "UserData");
private static string s_commonAppData = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
s_commonAppData 在调用 Path.Combine(s_commonAppData, "XXXX"); 时为 null。就我而言，这些初始化是按照您编写它们的确切顺序进行的 - 所以将 s_commonAppData 至少提高两行 ;)
关于c# - 什么是以及如何修复 System.TypeInitializationException 错误？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18989240/