我有以下 XML:
<?xml version="1.0" encoding="UTF-8" ?>
<bookstore>
<book>
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<account_number>1111 1111 1111 1111</account_number>
<year>2005</year>
<price>30.00</price>
</book>
<book>
<title lang="en">Harry Potter</title>
<author>J K. Rowling</author>
<account_number>2222 2222 2222 2222</account_number>
<year>2005</year>
<price>29.99</price>
</book>
<book>
<title lang="en">Learning XML</title>
<author>Erik T. Ray</author>
<account_number>3333 3333 3333 3333</account_number>
<year>2003</year>
<price>39.95</price>
</book>
</bookstore>
我有兴趣找到account_number的 XPath值为2222 2222 2222 2222。请指导我如何让 XPath 知道标签及其值。