XPath/XSLT contains() 用于多个字符串 [英] XPath/XSLT contains() for multiple strings

问题描述

contains() 是否适用于存储在变量中的多个单词?下面一个会起作用吗?如果它不起作用，请帮我解决.

Does contains() work for multiple words stored in a variable? Will the below one work? If it won't work, please help me with a solution.

<xsl:variable name="games" select="footballvolleyballchesscarrom"/>

<xsl:when test="contains($games,'chess,carrom')">CORRECT</xsl:when>

推荐答案

假设您要进行子字符串包含的逻辑 OR...

首先，这个select很可能是错误的¹:

First of all, this select is likely wrong¹:

<xsl:variable name="games" select="footballvolleyballchesscarrom"/>

它正在寻找一个名为 footballvolleyballchesscarrom 的元素.如果您尝试将游戏设置为 string footballvolleyballchesscarrom，请将其更改为:

It's looking for an element named footballvolleyballchesscarrom. If you're trying to set games to the string footballvolleyballchesscarrom, change it to this:

<xsl:variable name="games" select="'footballvolleyballchesscarrom'"/>

然后，使用任一

<xsl:when test="contains($games,'chess')
             or contains($games,'carrom')">CORRECT</xsl:when>

或

<xsl:when test="matches($games,'chess|carrom')">CORRECT</xsl:when>

测试 $games 是否包含您的多个子字符串之一.

to test whether $games contains one of your multiple substrings.

¹ 如果您真的打算从此处的输入 XML 中选择(可能是多个)元素，还有另一个 XSLT 2.0 选项可用于针对一组可能的值测试所选序列.如果您的输入 XML 是，例如，

¹ If you really intended to select (possibly multiple) elements from the input XML here, there is another XSLT 2.0 option for testing the selected sequence against a set of possible values. If your input XML were, say,

<games>
  <game>football</game>
  <game>volleyball</game>
  <game>chess</game>
  <game>carrom</game>
</games>

然后是这个模板，

<xsl:template match="/">
  <xsl:variable name="games" select="//game"/>
  <xsl:if test="$games = ('chess','carrom')">CORRECT</xsl:if>
</xsl:template>

将输出 CORRECT 因为在所选元素的字符串值中至少有 chess 或 carrom 之一.

would output CORRECT because among the string values of the selected elements is at least one of chess or carrom.

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