表达式/bookstore/book[1]/title
应该返回<title lang="eng">Harry Potter</title>
,但我得到“正则表达式不匹配......”
这是我正在测试的 XML:
<?xml version="1.0" encoding="ISO-8859-1"?>
<bookstore>
<book>
<title lang="eng">Harry Potter</title>
<price>29.99</price>
</book>
<book>
<title lang="eng">Learning XML</title>
<price>39.95</price>
</book>
</bookstore>