企业库6 LogCallHandler抛出异常"LogWriter尚未为Logger静态类设置"

Question

伙计们

我正在尝试将LogCallHandler用于拦截,如下所示:

<interception>
        <policy name="policyLogCallHandler">
          <matchingRule name="LogsMachingRule" type="NamespaceMatchingRule">
            <constructor>
              <param name="namespaceName" value="NetTcpContracts" />
            </constructor>
          </matchingRule>
          <callHandler type="Microsoft.Practices.EnterpriseLibrary.Logging.PolicyInjection.LogCallHandler, Microsoft.Practices.EnterpriseLibrary.PolicyInjection, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" name="callHandlerLog">
            <constructor>
              <param name="eventId" value="9002"/>
              <param name="logBeforeCall" value="true"/>
              <param name="logAfterCall" value="true"/>
              <param name="beforeMessage" value="--- begin"/>
              <param name="afterMessage" value="--- end"/>
              <param name="includeParameters" value="true"/>
              <param name="includeCallStack" value="true"/>
              <param name="includeCallTime" value="true"/>
              <param name="priority" value="1"/>
              <param name="order" value="1"/>
            </constructor>            
          </callHandler>
        </policy>        
      </interception>

此配置引发异常:"尚未为Logger静态类设置LogWriter.设置它调用Logger.SetLogWriter方法."

我使用运行时配置找到了解决此问题的方法:

IConfigurationSource configurationSource = ConfigurationSourceFactory.Create();
LogWriterFactory logWriterFactory = new LogWriterFactory(configurationSource);
Logger.SetLogWriter(logWriterFactory.Create());
LogEntry entry = new LogEntry();
entry.Message = "I am logging";
Logger.Write(entry)

但是,我正在通过配置文件使用配置.如何在配置文件中重现此行为？

TKS!

Answer 1

Enterprise Library的boostrapping行为在版本6中已更改.静态Logger外观的影响是您需要设置内部LogWriter(例如在应用程序启动时):有关更多详细信息,请参阅https://entlib.codeplex.com/讨论/ 442089

谢谢

Answer 2

今天遇到同样的错误，我刚刚删除了最新版本的 EL 日志记录块并使用 nuget 包管理器安装了它的5.0.505.1 版本，它工作了。