如何使用 XPath 选择多个可能的文本值? [英] How to use XPath to select multiple possible text values?

问题描述

我必须从类似于下面的评级标签中选择评级代码，但仅当机构是SP"或SNP"时.现在我有:

I have to select rating codes out of a ratings tag similar to the one below, but only when the agency is 'SP' or 'SNP'. Right now I have:

./ratings/rating/agency[text()='SNP'|text()='SP']/../code

虽然这似乎不起作用.我做错了什么?

This doesn't seem to be working though. What am I doing wrong?

<ratings>
  <rating>
    <agency>SP</agency>
    <provider>SP</provider>
    <type>LONG TERM</type>
    <currencyType>LOCAL</currencyType>
    <description>SP Standard LT LC rating</description>
    <code>BBB+</code>
    <date>2011-09-07</date>
  </rating>
</ratings>

谢谢，

贾里德

推荐答案

主要是您尝试用作或"的联合运算符 |.将其更改为或:

The main thing is the union operator | which you've tried to use as an 'or'. Change it to or:

./ratings/rating/agency[text()='SNP' or text()='SP']/../code

或者更自然地，

ratings/rating[agency[. = 'SNP' or . = 'SP']]/code

在 XPath 2.0 中，您可以使用序列:

In XPath 2.0, you can use a sequence:

ratings/rating[agency = ('SNP', 'SP')]/code

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