Umbraco 如何将log4net-aspnet请求转换模式用于关联id

我希望将分配给每个错误的相关id放入由log4net生成的日志文件中。我希望这样，这样我就可以在自定义错误页面中向用户显示它，然后我们的ops可以匹配它们，并知道哪个错误是哪个

我设置了一个无操作过滤器属性：

public class RequestModificationForLoggingFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        HttpContext.Current.Request.Headers["correlationid"] = Guid.NewGuid().ToString();
    }
}

并将log4net.config更改为（注意

[%aspnet请求{correlationid}]

）：

---

我哪里出错了？

我最终创建了一个模块：

public class LoggingModule : IHttpModule
{
    public void Dispose()
    {
    }

    public void Init(HttpApplication context)
    {
        context.BeginRequest += new EventHandler(OnBeginRequest);
    }

    public void OnBeginRequest(Object sender, EventArgs e)
    {
        // When the error event is called, we set a correlation id which gets used in the logging
        ThreadContext.Properties["correlationid"] = Guid.NewGuid().ToString();
    }
}

然后使用这个log4net语法：

%property{correlationid}

不要忘记，如果您想要从applicationstartup或类似的东西跟踪的任何东西的id，您可以在跟踪侦听器中进行检查，如：

// If correlationid is not set, then this log was thrown from a place where a request was not made. ie. OnApplicationStarting
if (ThreadContext.Properties["correlationid"] == null)
{
    // We assign an id here to ensure the log does not show null for id
    ThreadContext.Properties["correlationid"] = Guid.NewGuid().ToString();
}

%property{correlationid}

// If correlationid is not set, then this log was thrown from a place where a request was not made. ie. OnApplicationStarting
if (ThreadContext.Properties["correlationid"] == null)
{
    // We assign an id here to ensure the log does not show null for id
    ThreadContext.Properties["correlationid"] = Guid.NewGuid().ToString();
}