数据:
<?xml version="1.0"?>
<phonebook>
<contact>
<name>aaa</name>
<phone type="work">111-2222</phone>
<phone type="home">222-3333</phone>
<phone type="mobile">333-4444</phone>
</contact>
</phonebook>
将 type="mobile" 这行的333-4444修改为555-6666
<?xml version="1.0"?>
<phonebook>
<contact>
<name>aaa</name>
<phone type="work">111-2222</phone>
<phone type="home">222-3333</phone>
<phone type="mobile">333-4444</phone>
</contact>
</phonebook>
将 type="mobile" 这行的333-4444修改为555-6666