XPath 具有条件的多个属性值之一

本文介绍了XPath 具有条件的多个属性值之一的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

鉴于以下表达式，我如何使用 = 更简洁明确?

Given the following expression, how can I use = to be more concise and explicit?

(//h2/@id[contains(.,"foo") or contains(.,"bar") or contains(.,"baz"))[last()]

这是我尝试过的，但我的翻译说它无效:

Here's what I tried, but my interpreter says it's not valid:

(//h2/@id[text() = ("foo", "bar", "baz")])[last()]

我不能使用 contains() 因为我需要防止子字符串匹配.我正在使用 XPath 1.0，an answer to a related question 是这个问题的动力.

I cannot use contains() because I need to guard against substring matches. I'm using XPath 1.0 and an answer to a related question is the impetus for this question.

推荐答案

在 XPath 2.0 中，

In XPath 2.0,

(//h2[@id = ("foo", "bar", "baz")])[last()]

将选择文档中的最后一个 h2 元素，其 id 属性值为 foo、bar、或 baz.

would select the last h2 element in the document with an id attribute value of foo, bar, or baz.

在 XPath 1.0 中，您将使用显式布尔 或 运算符:

In XPath 1.0, you'd use explicit boolean or operators:

(//h2[@id="foo" or @id="bar" or @id="baz"])[last()]