什么导致了一个“org.xml.sax。当调用ColdFusion Web服务时，会出现“坏类型”异常吗?

I've written a ColdFusion Web Service for an external client to consume. It basically let's them send over some user information, and returns the contents of the user's shopping cart, and let's them add items to the user's shopping cart. For simplicity sake, we'll just cover the "getCart" method.I've written a ColdFusion Web Service for an ex