您可以使用 xmlSetStructuredErrorFunc 和 xmlSetGenericErrorFunc .这些设置了全局的错误回调，因为您已经注意到，此时将没有任何xmlDocPtr上下文.

You can use xmlSetStructuredErrorFunc and xmlSetGenericErrorFunc. These set error callbacks globally, because as you've noted, there won't be any xmlDocPtr context at this point.

http://www.xmlsoft.org/html/libxml-xmlerror.html