“xmlns:xmpp” & “xmpp:xmlns”有什么区别？
这个工作正常。
curl -H 'Content-Type: application/xml' -d " <body rid='2965554435' xmlns='http://jabber.o=utf-8' ver='1.6' xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' /> " https://dashboard.onsip.com/http-bind
这个返回一个空响应
curl -H 'Content-Type: application/xml' -d " <body rid='2965554435' xmlns='http://jabber.o=utf-8' ver='1.6' xmpp:version='1.0' xmpp:xmlns='urn:xmpp:xbosh' /> " https://dashboard.onsip.com/http-bind
有什么区别？第二个这样写合适吗？
PS XHR xml是由OXJS库生成的。
This one works Ok.
curl -H 'Content-Type: application/xml' -d " <body rid='2965554435' xmlns='http://jabber.o=utf-8' ver='1.6' xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' /> " https://dashboard.onsip.com/http-bind
this one was returning an empty response
curl -H 'Content-Type: application/xml' -d " <body rid='2965554435' xmlns='http://jabber.o=utf-8' ver='1.6' xmpp:version='1.0' xmpp:xmlns='urn:xmpp:xbosh' /> " https://dashboard.onsip.com/http-bind
what is the difference ? and is the second one is appropriate to write so?
P.S. XHR xml is generated by OXJS library.
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声明一个命名空间。前缀
xmlns:...在 中具有预定义的含义XML With Namespaces，绑定文档中xmpp:...前缀的使用。这：
不是命名空间声明，它是一个名为
xmlns且带有前缀xmpp的属性。xmpp前缀未绑定到本文档中的任何命名空间，因为没有xmlns:xmpp声明，并且它不是预定义的前缀。当 XML With Namespaces 解析器获取
xmpp:...属性并且没有xmpp的命名空间声明时，它会抱怨。此错误将是网络服务不给您响应的原因。Only:
declares a namespace. The prefix
xmlns:...has a predefined meaning in XML With Namespaces, to bind use of thexmpp:...prefix in the document.This:
is not a namespace declaration, it's an attribute named
xmlnswith the prefixxmpp. Thexmppprefix is not bound to any namespace in this document because there is noxmlns:xmppdeclaration and it is not a predefined prefix.An XML With Namespaces parser will complain when it gets
xmpp:...attributes and there is no namespace declaration forxmpp. This error will be why the web service is giving you no response.