如何在Java中使用XPath获取属性值? [英] How to get attribute value using XPath in Java?

问题描述

我下面有XML可以使用XPath进行解析:

I have below XML to parse using XPath:

<?xml version="1.0" encoding="UTF-8"?>
<schema>
  <element name="name_ele1" id="name_id_1" >test name1</element>
  <element name="name_ele2" id="name_id_2" >test name2</element>
  <element name="name_ele2" id="name_id_3" >test name3</element>
</schema>

我想根据传递的ID从xml文档中获取名称"，但是我无法获取所需的数据，而是查询返回空白.

I want to fetch "name" from the xml document based upon the Id I have passed but I am not able to get the required data instead query is returning blank.

XPathExpression expr = xpath.compile("/schema/element[@id='name_id_2']/name/text()");

推荐答案

像这样:

XPathExpression expr = xpath.compile("/schema/element[@id='name_id_2']/@name");

您的表达式尝试选择 name 元素内的文本，而不是 name 属性的值.

Your expression attempts to select the text inside the name element, instead of the value of the name attribute.

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