c# – 将Enterprise Library 5迁移到6

试图从Enterprise Library 5.0移动到6.0,我遇到了一些麻烦.也许这会有助于其他人.

以下配置是(静默)异常记录到数据库的示例：

<configSections>
  <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging" requirePermission="true" />
  <section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling" requirePermission="true" />
</configSections>
<loggingConfiguration name="" tracingEnabled="true" defaultCategory="General">
  <listeners>
    <add name="Database Trace Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.Database.FormattedDatabaseTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging.Database"
         listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Database.Configuration.FormattedDatabaseTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging.Database"
         databaseInstanceName="LogContext" writeLogStoredProcName="WriteLog"
         addCategoryStoredProcName="AddCategory" formatter="Text Formatter" />
  </listeners>
  <formatters>
    <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging"
         template="Timestamp: {timestamp}{newline}..."
         name="Text Formatter" />
  </formatters>
  <categorySources>
    <add switchValue="All" name="Exception">
      <listeners>
        <add name="Database Trace Listener" />
      </listeners>
    </add>
  </categorySources>
</loggingConfiguration>
<exceptionHandling>
  <exceptionPolicies>
    <add name="UiPolicy">
      <exceptionTypes>
        <add name="All Exceptions" type="System.Exception, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
             postHandlingAction="None">
          <exceptionHandlers>
            <add name="Logging Exception Handler" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging.LoggingExceptionHandler, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging"
                 logCategory="Exception" eventId="100" severity="Error" title="Enterprise Library Exception Handling"
                 formatterType="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.TextExceptionFormatter, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling"
                 priority="0" />
          </exceptionHandlers>
        </add>
      </exceptionTypes>
    </add>
  </exceptionPolicies>
</exceptionHandling>

我正在使用以下版本5.0.414.0的程序集：

Microsoft.Practices.EnterpriseLibrary.ExceptionHandling
Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging
Microsoft.Practices.EnterpriseLibrary.Logging
Microsoft.Practices.EnterpriseLibrary.Logging.Database

使用Enterprise Library 5.0在asp.net MVC应用程序中使用所有这些就像这样简单：

// ...
catch (Exception ex)
{
    if (ExceptionPolicy.HandleException(ex, "UiPolicy")) throw;
    // do something else
}

将程序集升级到Enterprise Library 6.0后,我收到以下异常消息：

Must set an ExceptionManager in the ExceptionPolicy class using the SetExceptionManager method.

那么该怎么办？

解决方法:

一步步

为了摆脱这个异常(归功于Randy’s answer),我必须使用ExceptionManager,在我的情况下通过工厂.我在global.asax的Application_Start()方法中使用它：

protected void Application_Start()
{
    IConfigurationSource source = ConfigurationSourceFactory.Create();

    var exceptionPolicyFactory = new ExceptionPolicyFactory(source);
    var exceptionManager = exceptionPolicyFactory.CreateManager();
    ExceptionPolicy.SetExceptionManager(exceptionManager);
}

但是我的处理和记录设置只有一半.我现在在exceptionPolicyFactory.CreateManager()中得到以下异常

The LogWriter has not been set for the Logger static class. Set it invoking the Logger.SetLogWriter method.

为此,我补充道

var logwriterFactory = new LogWriterFactory(source);
var logWriter = logwriterFactory.Create();
Logger.SetLogWriter(logWriter);

现在它说

Database provider factory not set for the static DatabaseFactory. Set a provider factory invoking the DatabaseFactory.SetProviderFactory method or by specifying custom mappings by calling the DatabaseFactory.SetDatabases method.

在logwriterFactory.Create()上.所以还有一件事要补充：

DatabaseFactory.SetDatabaseProviderFactory(new DatabaseProviderFactory(source));

完整解决方案

现在,我的Application_Start()就是

protected void Application_Start()
{
    IConfigurationSource source = ConfigurationSourceFactory.Create();
    DatabaseFactory.SetDatabaseProviderFactory(new DatabaseProviderFactory(source));

    var logwriterFactory = new LogWriterFactory(source);
    var logWriter = logwriterFactory.Create();
    Logger.SetLogWriter(logWriter);

    var exceptionPolicyFactory = new ExceptionPolicyFactory(source);
    var exceptionManager = exceptionPolicyFactory.CreateManager();
    ExceptionPolicy.SetExceptionManager(exceptionManager);
}

而配置和实际的异常处理代码保持不变：

ExceptionPolicy.HandleException(exceptionToHandle, "UiPolicy");

标签：c,exception-handling,asp-net-mvc,enterprise-library,logging
来源： https://codeday.me/bug/20190608/1200901.html