Question

我想在我的XML中找到基于AddressID的邮政编码。

<Address City="Londong" County="Greater London" FlatNumber="" HouseNumber="702" PostCode="EH14 3HW" Street="" AddressID="0" isPrimary="1"/>
<Address City="Braintree" County="Essex" FlatNumber="" HouseNumber="586" PostCode="CM79AB" Street="Blocking End" AddressID="1"  isPrimary="0"/>

我正在尝试不同的XPath语句，而不是获取值或获取null。我想说，给我一个AddressID = 1的PostCode。

我尝试了以下内容：

//Address[AddressID = 1]@PostCode
//Address[AddressID = 1]/@PostCode
//Address[AddressID = 1 @PostCode]

Answer 1

您的AddressID是一个属性（与PostCode相同），因此您需要使用@。

//Address[@AddressID="1"]/@PostCode

您正在尝试的查询//Address[AddressID = 1]/@PostCode，查找类似的内容：

<Address PostCode="ABC">    <!-- PostCode is an attribute (has an @) -->
  <AddressID>1</AddressID>  <!-- AddressID is a child element (no @) -->
</Address>

XPath根据兄弟条件查找兄弟属性

1 个答案: