XSLT 字符串替换

发布于 2024-09-05 19:20:29 字数 1163 浏览 2 评论 0原文

我不太了解 XSL,但我需要修复此代码,我已减少它以使其更简单。
我收到这个错误

无效的 XSLT/XPath 函数

此行上的

<xsl:variable name="text" select="replace($text,'a','b')"/>

这是 XSL

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:inm="http://www.inmagic.com/webpublisher/query" version="1.0">
    <xsl:output method="text" encoding="UTF-8" />

    <xsl:preserve-space elements="*" />
    <xsl:template match="text()" />

    <xsl:template match="mos">
        <xsl:apply-templates />

        <xsl:for-each select="mosObj">
          'Notes or subject' 
           <xsl:call-template
                name="rem-html">
                <xsl:with-param name="text" select="SBS_ABSTRACT" />
            </xsl:call-template>
        </xsl:for-each>
    </xsl:template>

    <xsl:template name="rem-html">
        <xsl:param name="text" />
        <xsl:variable name="text" select="replace($text, 'a', 'b')" />
    </xsl:template>
</xsl:stylesheet>

谁能告诉我它有什么问题吗?

I don't really know XSL but I need to fix this code, I have reduced it to make it simpler.
I am getting this error

Invalid XSLT/XPath function

on this line

<xsl:variable name="text" select="replace($text,'a','b')"/>

This is the XSL

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:inm="http://www.inmagic.com/webpublisher/query" version="1.0">
    <xsl:output method="text" encoding="UTF-8" />

    <xsl:preserve-space elements="*" />
    <xsl:template match="text()" />

    <xsl:template match="mos">
        <xsl:apply-templates />

        <xsl:for-each select="mosObj">
          'Notes or subject' 
           <xsl:call-template
                name="rem-html">
                <xsl:with-param name="text" select="SBS_ABSTRACT" />
            </xsl:call-template>
        </xsl:for-each>
    </xsl:template>

    <xsl:template name="rem-html">
        <xsl:param name="text" />
        <xsl:variable name="text" select="replace($text, 'a', 'b')" />
    </xsl:template>
</xsl:stylesheet>

Can anyone tell me what's wrong with it?

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评论(6

沉睡月亮 2024-09-12 19:20:29

replace 不适用于 XSLT 1.0。

Codesling 有一个 string-replace 模板 您可以用作函数的替代:

<xsl:template name="string-replace-all">
    <xsl:param name="text" />
    <xsl:param name="replace" />
    <xsl:param name="by" />
    <xsl:choose>
        <xsl:when test="$text = '' or $replace = ''or not($replace)" >
            <!-- Prevent this routine from hanging -->
            <xsl:value-of select="$text" />
        </xsl:when>
        <xsl:when test="contains($text, $replace)">
            <xsl:value-of select="substring-before($text,$replace)" />
            <xsl:value-of select="$by" />
            <xsl:call-template name="string-replace-all">
                <xsl:with-param name="text" select="substring-after($text,$replace)" />
                <xsl:with-param name="replace" select="$replace" />
                <xsl:with-param name="by" select="$by" />
            </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="$text" />
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

调用为:

<xsl:variable name="newtext">
    <xsl:call-template name="string-replace-all">
        <xsl:with-param name="text" select="$text" />
        <xsl:with-param name="replace" select="a" />
        <xsl:with-param name="by" select="b" />
    </xsl:call-template>
</xsl:variable>

另一方面,如果您实际上只需要用另一个字符替换一个字符,则可以调用 translate 具有类似的签名。像这样的东西应该可以正常工作:

<xsl:variable name="newtext" select="translate($text,'a','b')"/>

另外,请注意,在本示例中,我将变量名称更改为“newtext”,在 XSLT 中变量是不可变的,因此您不能执行与 $foo = $foo 等效的操作code> 就像您在原始代码中一样。

replace isn't available for XSLT 1.0.

Codesling has a template for string-replace you can use as a substitute for the function:

<xsl:template name="string-replace-all">
    <xsl:param name="text" />
    <xsl:param name="replace" />
    <xsl:param name="by" />
    <xsl:choose>
        <xsl:when test="$text = '' or $replace = ''or not($replace)" >
            <!-- Prevent this routine from hanging -->
            <xsl:value-of select="$text" />
        </xsl:when>
        <xsl:when test="contains($text, $replace)">
            <xsl:value-of select="substring-before($text,$replace)" />
            <xsl:value-of select="$by" />
            <xsl:call-template name="string-replace-all">
                <xsl:with-param name="text" select="substring-after($text,$replace)" />
                <xsl:with-param name="replace" select="$replace" />
                <xsl:with-param name="by" select="$by" />
            </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="$text" />
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

invoked as:

<xsl:variable name="newtext">
    <xsl:call-template name="string-replace-all">
        <xsl:with-param name="text" select="$text" />
        <xsl:with-param name="replace" select="a" />
        <xsl:with-param name="by" select="b" />
    </xsl:call-template>
</xsl:variable>

On the other hand, if you literally only need to replace one character with another, you can call translate which has a similar signature. Something like this should work fine:

<xsl:variable name="newtext" select="translate($text,'a','b')"/>

Also, note, in this example, I changed the variable name to "newtext", in XSLT variables are immutable, so you can't do the equivalent of $foo = $foo like you had in your original code.

可遇━不可求 2024-09-12 19:20:29

下面是 XSLT 函数,其工作方式与 C# 的 String.Replace() 函数类似。

该模板有 3 个参数如下

text :- 您的主字符串

replace :- 您想要替换的字符串

by :- 字符串它将通过新字符串回复

下面是模板

<xsl:template name="string-replace-all">
  <xsl:param name="text" />
  <xsl:param name="replace" />
  <xsl:param name="by" />
  <xsl:choose>
    <xsl:when test="contains($text, $replace)">
      <xsl:value-of select="substring-before($text,$replace)" />
      <xsl:value-of select="$by" />
      <xsl:call-template name="string-replace-all">
        <xsl:with-param name="text" select="substring-after($text,$replace)" />
        <xsl:with-param name="replace" select="$replace" />
        <xsl:with-param name="by" select="$by" />
      </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$text" />
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

下面的示例展示了如何调用它

<xsl:variable name="myVariable ">
  <xsl:call-template name="string-replace-all">
    <xsl:with-param name="text" select="'This is a {old} text'" />
    <xsl:with-param name="replace" select="'{old}'" />
    <xsl:with-param name="by" select="'New'" />
  </xsl:call-template>
</xsl:variable>

您还可以参考 以下 URL 了解详细信息。

Here is the XSLT function which will work similar to the String.Replace() function of C#.

This template has the 3 Parameters as below

text :- your main string

replace :- the string which you want to replace

by :- the string which will reply by new string

Below are the Template

<xsl:template name="string-replace-all">
  <xsl:param name="text" />
  <xsl:param name="replace" />
  <xsl:param name="by" />
  <xsl:choose>
    <xsl:when test="contains($text, $replace)">
      <xsl:value-of select="substring-before($text,$replace)" />
      <xsl:value-of select="$by" />
      <xsl:call-template name="string-replace-all">
        <xsl:with-param name="text" select="substring-after($text,$replace)" />
        <xsl:with-param name="replace" select="$replace" />
        <xsl:with-param name="by" select="$by" />
      </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$text" />
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

Below sample shows how to call it

<xsl:variable name="myVariable ">
  <xsl:call-template name="string-replace-all">
    <xsl:with-param name="text" select="'This is a {old} text'" />
    <xsl:with-param name="replace" select="'{old}'" />
    <xsl:with-param name="by" select="'New'" />
  </xsl:call-template>
</xsl:variable>

You can also refer the below URL for the details.

屋檐 2024-09-12 19:20:29

我一直点击这个答案。但它们都没有列出 xsltproc(可能还有大多数 XSLT 1.0 处理器)的最简单解决方案:

  1. 将 exslt 字符串名称添加到样式表中,即:
<xsl:stylesheet
  version="1.0"
  xmlns:str="http://exslt.org/strings"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  1. 然后像这样使用它:
<xsl:value-of select="str:replace(., ' ', '')"/>

I keep hitting this answer. But none of them list the easiest solution for xsltproc (and probably most XSLT 1.0 processors):

  1. Add the exslt strings name to the stylesheet, i.e.:
<xsl:stylesheet
  version="1.0"
  xmlns:str="http://exslt.org/strings"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  1. Then use it like:
<xsl:value-of select="str:replace(., ' ', '')"/>
回忆追雨的时光 2024-09-12 19:20:29

注意:如果您希望在需要替换源字符串中大量实例(例如长文本中的新行)的情况下使用已经提到的算法,则有 high< /em> 由于递归调用,您最终可能会遇到 StackOverflowException

感谢 Xalan 的内置 Java 类型嵌入(没有了解如何在 Saxon 中做到这一点),我解决了这个问题:

<xsl:stylesheet version="1.0" exclude-result-prefixes="xalan str"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:xalan="http://xml.apache.org/xalan"
                xmlns:str="xalan://java.lang.String"
        >
...
<xsl:value-of select="str:replaceAll(
    str:new(text()),
    $search_string,
    $replace_string)"/>
...
</xsl:stylesheet>

Note: In case you wish to use the already-mentioned algo for cases where you need to replace huge number of instances in the source string (e.g. new lines in long text) there is high probability you'll end up with StackOverflowException because of the recursive call.

I resolved this issue thanks to Xalan's (didn't look how to do it in Saxon) built-in Java type embedding:

<xsl:stylesheet version="1.0" exclude-result-prefixes="xalan str"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:xalan="http://xml.apache.org/xalan"
                xmlns:str="xalan://java.lang.String"
        >
...
<xsl:value-of select="str:replaceAll(
    str:new(text()),
    $search_string,
    $replace_string)"/>
...
</xsl:stylesheet>
谈情不如逗狗 2024-09-12 19:20:29

当您的处理器在 .NET Framework(不支持 .NET Core 或 .NET 5)上运行或使用 MSXML(与基于 Java 的处理器或其他本机处理器相对)时,您可以使用以下代码。它使用 msxsl:script

确保将命名空间 xmlns:msxsl="urn:schemas-microsoft-com:xslt" 添加到根 xsl:stylesheetxsl:transform 元素。

此外,将 outlet 绑定到您喜欢的任何命名空间,例如 xmlns:outlet = "http://my.functions"

<msxsl:script implements-prefix="outlet" language="javascript">
function replace_str(str_text,str_replace,str_by)
{
     return str_text.replace(str_replace,str_by);
}
</msxsl:script>


<xsl:variable name="newtext" select="outlet:replace_str(string(@oldstring),'me','you')" />

You can use the following code when your processor runs on .NET Framework (Not supported on .NET Core or .NET 5) or uses MSXML (as opposed to Java-based or other native processors). It uses msxsl:script.

Make sure to add the namespace xmlns:msxsl="urn:schemas-microsoft-com:xslt" to your root xsl:stylesheet or xsl:transform element.

In addition, bind outlet to any namespace you like, for instance xmlns:outlet = "http://my.functions".

<msxsl:script implements-prefix="outlet" language="javascript">
function replace_str(str_text,str_replace,str_by)
{
     return str_text.replace(str_replace,str_by);
}
</msxsl:script>


<xsl:variable name="newtext" select="outlet:replace_str(string(@oldstring),'me','you')" />
紫轩蝶泪 2024-09-12 19:20:29

添加 case:

  <xsl:when test="$text = '' or $replace = ''or not($replace)" >
    <xsl:value-of select="$text" />
    <!-- Prevent thsi routine from hanging -->
  </xsl:when>

该例程非常好,但是它导致我的应用程序挂起,因此我需要在函数被递归调用之前

。我从这里得到了答案:
当测试挂在无限循环中

谢谢!

The rouine is pretty good, however it causes my app to hang, so I needed to add the case:

  <xsl:when test="$text = '' or $replace = ''or not($replace)" >
    <xsl:value-of select="$text" />
    <!-- Prevent thsi routine from hanging -->
  </xsl:when>

before the function gets called recursively.

I got the answer from here:
When test hanging in an infinite loop

Thank you!

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