分片集合中mongodb中的聚合管道(Aggregation Pipeline in mongodb in sharded collection)

 我假设您使用的是ASP.NET AJAX，而不是jQuery或其他第三方JavaScript库。 
 
 ASP.NET AJAX故障回调只接受一个参数。 从MSDN，示例失败回调将如下所示： 
 
function wcfFailCallback(error)
{
    var stackTrace = error.get_stackTrace();
    var message = error.get_message();
    var statusCode = error.get_statusCode();
    var exceptionType = error.get_exceptionType();
    var timedout = error.get_timedOut();

    // Display the error.    
    var RsltElem = 
        document.getElementById("Results");
    RsltElem.innerHTML = 
        "Stack Trace: " +  stackTrace + "<br/>" +
        "Service Error: " + message + "<br/>" +
        "Status Code: " + statusCode + "<br/>" +
        "Exception Type: " + exceptionType + "<br/>" +
        "Timedout: " + timedout;
}
 
 因此， wcfFailCallback函数接受一个error参数，该参数具有许多属性，可以为您提供有关失败的信息。 
 
 MSDN上的完整文章就在这里 。 它介绍了有关如何将WCF服务连接到ASP.NET AJAX客户端的大量详细信息。 
 
 我希望这有帮助！！ 如果还有其他问题或者我没有完全理解您的问题，请告诉我，我会相应更新我的答案。 

I'm assuming you're using ASP.NET AJAX and not jQuery or some other 3rd party JavaScript library.
 
The ASP.NET AJAX failure callback takes a single parameter. From MSDN, a sample failure callback would look like this:
 
function wcfFailCallback(error)
{
    var stackTrace = error.get_stackTrace();
    var message = error.get_message();
    var statusCode = error.get_statusCode();
    var exceptionType = error.get_exceptionType();
    var timedout = error.get_timedOut();

    // Display the error.    
    var RsltElem = 
        document.getElementById("Results");
    RsltElem.innerHTML = 
        "Stack Trace: " +  stackTrace + "<br/>" +
        "Service Error: " + message + "<br/>" +
        "Status Code: " + statusCode + "<br/>" +
        "Exception Type: " + exceptionType + "<br/>" +
        "Timedout: " + timedout;
}
 
So the wcfFailCallback function takes an error parameter, which has a number of properties that provide you information about what failed.
 
The full article on MSDN is here. It goes into some decent amount of details about how to hook up WCF services to ASP.NET AJAX clients.
 
I hope this helps!! If there are other questions or if I didn't fully understand your question, let me know and I'll update my answer accordingly.