Question

我在我的asp.net网站上使用企业库5.0登录，
我的web.config文件如下：

<?xml version="1.0"?>
<configuration>
    <configSections>
        <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true"/>
    </configSections>
    <loggingConfiguration name="FlatFileLogging" tracingEnabled="true"
        defaultCategory="General">
        <listeners>
            <add name="Flat File Trace Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                fileName="C:\Logs\2013-06-28 14-21-53.log" header="" footer=""
                formatter="Text Formatter" traceOutputOptions="DateTime" />
        </listeners>
        <formatters>
            <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                template="{timestamp}, {severity}, {message}" name="Text Formatter" />
        </formatters>
        <categorySources>
            <add switchValue="All" name="General">
                <listeners>
                    <add name="Flat File Trace Listener" />
                </listeners>
            </add>
        </categorySources>
        <specialSources>
            <allEvents switchValue="All" name="All Events" />
            <notProcessed switchValue="All" name="Unprocessed Category" />
            <errors switchValue="All" name="Logging Errors &amp; Warnings">
                <listeners>
                    <add name="Flat File Trace Listener" />
                </listeners>
            </errors>
        </specialSources>
    </loggingConfiguration>
    <appSettings/>
    <connectionStrings/>
    <system.web>
        <compilation debug="true" targetFramework="4.0">
        </compilation>
        <authentication mode="Windows"/>
        <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/></system.web>
</configuration>

我正在使用以下函数更改日志文件路径：

public static void SetLogFilePath(string filePath)
{
    //string logdirectory = AppDomain.CurrentDomain.BaseDirectory + "Logs\\";
    //if (!Directory.Exists(logdirectory))
    //    Directory.CreateDirectory(logdirectory);
    //logFilePath = logdirectory + (string.IsNullOrWhiteSpace(txtBatchName.Text) ? "" : (txtBatchName.Text + " ")) + DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss") + ".log";

    if (!File.Exists(filePath))
        File.Create(filePath);

    ConfigurationFileMap objConfigPath = new ConfigurationFileMap();

    // App config file path.
    string appPath = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
    objConfigPath.MachineConfigFilename = appPath;

    Configuration entLibConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");

    LoggingSettings loggingSettings = (LoggingSettings)entLibConfig.GetSection(LoggingSettings.SectionName);

    TraceListenerData traceListenerData = loggingSettings.TraceListeners.Get("Flat File Trace Listener");
    FlatFileTraceListenerData objFlatFileTraceListenerData = traceListenerData as FlatFileTraceListenerData;

    objFlatFileTraceListenerData.FileName = filePath;

    entLibConfig.Save();
}

每当我更改日志文件路径并将日志消息发送到文件时，日志都不会转到新创建的文件。日志消息转到先前设置的文件路径。似乎新设置没有立即反映出来。

string path = "C:\\Logs\\" + DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss") + ".log";
SetLogFilePath(path);
Logger.Write(message, "General", 1, 0, System.Diagnostics.TraceEventType.Information);

如何立即刷新新设置以进行编码？

Answer 1

你如何定义“立即”？如果您的意思是在执行请求的中间，那么我认为您不能通过配置来执行此操作，因为不会为该请求刷新配置。

这是一个基于博客文章Enterprise Library Programmatic Configuration似乎对我有用的实现。我不会将配置更改写回磁盘，而是将其更改为内存。

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        EnterpriseLibraryContainer.Current.GetInstance<LogWriter>()
            .Write("test", "General");

        string path = "C:\\Logs\\anotherlogfile.log";
        SetLogFilePath(path);

        EnterpriseLibraryContainer.Current.GetInstance<LogWriter>()
            .Write("Another test", "General");
    }

    public void SetLogFilePath(string filePath)
    {
        ConfigurationFileMap objConfigPath = new ConfigurationFileMap();

        // App config file path.
        string appPath = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
        objConfigPath.MachineConfigFilename = appPath;

        Configuration entLibConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");

        LoggingSettings loggingSettings = (LoggingSettings)entLibConfig.GetSection(LoggingSettings.SectionName);

        TraceListenerData traceListenerData = loggingSettings.TraceListeners.Get("Flat File Trace Listener");
        FlatFileTraceListenerData objFlatFileTraceListenerData = traceListenerData as FlatFileTraceListenerData;

        objFlatFileTraceListenerData.FileName = filePath;

        IUnityContainer container = new UnityContainer();
        container.AddNewExtension<EnterpriseLibraryCoreExtension>();

        // Configurator will read Enterprise Library configuration 
        // and set up the container
        UnityContainerConfigurator configurator = new UnityContainerConfigurator(container);

        var loggingXmlConfigSource = new SerializableConfigurationSource();
        loggingXmlConfigSource.Add(LoggingSettings.SectionName, loggingSettings);

        // Configure the container with our own custom logging
        EnterpriseLibraryContainer.ConfigureContainer(configurator, loggingXmlConfigSource);

        // Wrap in ServiceLocator
        IServiceLocator locator = new UnityServiceLocator(container);

        // Release lock(s) on existing file(s)
        EnterpriseLibraryContainer.Current.GetInstance<LogWriter>().Dispose();

        // And set Enterprise Library to use it
        EnterpriseLibraryContainer.Current = locator;
    }
}

public class SerializableConfigurationSource : IConfigurationSource
{
    Dictionary<string, ConfigurationSection> sections = new Dictionary<string, ConfigurationSection>();

    public SerializableConfigurationSource()
    {
    }

    public ConfigurationSection GetSection(string sectionName)
    {
        ConfigurationSection configSection;

        if (sections.TryGetValue(sectionName, out configSection))
        {
            SerializableConfigurationSection section = configSection as SerializableConfigurationSection;

            if (section != null)
            {
                using (StringWriter xml = new StringWriter())
                using (XmlWriter xmlwriter = System.Xml.XmlWriter.Create(xml))
                {
                    section.WriteXml(xmlwriter);
                    xmlwriter.Flush();

                    MethodInfo methodInfo = section.GetType().GetMethod("DeserializeSection", BindingFlags.NonPublic | BindingFlags.Instance);
                    methodInfo.Invoke(section, new object[] { XDocument.Parse(xml.ToString()).CreateReader() });

                    return configSection;
                }
            }
        }

        return null;
    }

    public void Add(string sectionName, ConfigurationSection configurationSection)
    {
        sections[sectionName] = configurationSection;
    }

    public void AddSectionChangeHandler(string sectionName, ConfigurationChangedEventHandler handler)
    {
        throw new NotImplementedException();
    }

    public void Remove(string sectionName)
    {
        sections.Remove(sectionName);
    }

    public void RemoveSectionChangeHandler(string sectionName, ConfigurationChangedEventHandler handler)
    {
        throw new NotImplementedException();
    }

    public event EventHandler<ConfigurationSourceChangedEventArgs> SourceChanged;

    public void Dispose()
    {
    }
}

记录前往已创建日志文件的消息

1 个答案: