帮助解析XML，简单的字符串 - 但我似乎无法解析它

I have the following XML:

我有以下XML:

<iq xmlns="jabber:client" to="[email protected]/agsXMPP" xml:lang="en" id="sub23" from="search.google.com" type="result">
    <pubsub xmlns="https://jabber.org/protocol/pubsub">
        <subscription subscription="subscribed" subid="5077774B57777BD77770" node="search" jid="[email protected]/agsXMPP" />
    </pubsub>
</iq>
<iq xmln