Enterprise Library 5.0：处理日志中的多个类别

Question

有一些代码：

private const string FORMAT_TEXT = 
   "{timestamp}: [{category} ({win32ThreadId}-{threadName}) {severity}] |{title}|: {message}";
string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "trace.log");
var builder = new ConfigurationSourceBuilder();


builder.ConfigureLogging()
         .WithOptions.DoNotRevertImpersonation()
         .LogToCategoryNamed("Category1")
         .SendTo.FlatFile("MyMessages1")
         .FormatWith(new FormatterBuilder()
            .TextFormatterNamed("Text Formatter 1").UsingTemplate(FORMAT_TEXT))
         .ToFile(path)
         .LogToCategoryNamed("Category2")
         .SendTo.FlatFile("MyMessages2")
         .FormatWith(new FormatterBuilder()
            .TextFormatterNamed("Text Formatter 2").UsingTemplate(FORMAT_TEXT))
         .ToFile(path);

var configSource = new DictionaryConfigurationSource();
builder.UpdateConfigurationWithReplace(configSource);
EnterpriseLibraryContainer.Current = EnterpriseLibraryContainer.CreateDefaultContainer(configSource);

for (int i = 0; i < 10; i++)
{
   Logger.Write("Error message: " + i.ToString(), "Category1");
   Logger.Write("Error message: " + i.ToString(), "Category2");
}

Console.ReadKey();

它生成两个日志文件：类别1的trace.log和类别2的65a25bb0-4c42-430d-b2b7-9bd2c8ea41e1trace.log。我想记录到一个文件trace.log。怎么了？

Answer 1

您想要使用 SharedListener 以便两个类别都记录到同一个侦听器。在您的代码中，您正在创建两个单独的侦听器，它们都记录到同一文件（这会导致文件锁定问题）。

尝试：

builder.ConfigureLogging()
         .WithOptions.DoNotRevertImpersonation()
         .LogToCategoryNamed("Category1")
             .SendTo.FlatFile("MyMessages1")
             .FormatWith(new FormatterBuilder()
                .TextFormatterNamed("Text Formatter 1").UsingTemplate(FORMAT_TEXT))
             .ToFile(path)
         .LogToCategoryNamed("Category2")
             .SendTo.SharedListenerNamed("MyMessages1");