cdata-section-elements 不起作用 [英] cdata-section-elements not working

问题描述

我正在尝试通过设置全局参数在通过 XSLT(使用 Saxon-HE v9.7.0.14)生成的 xml 文件中设置密码.

I am trying to set a password in an xml file generated via XSLT (using Saxon-HE v9.7.0.14), by setting a global parameter.

密码可以包含任何字符，因此需要放在 CDATA 部分.

The password can contain any characters so it needs to be put in a CDATA section.

我试图通过设置我的 xslt 的 xsl:output 元素的 cdata-section-elements 属性来包含密码元素的名称来实现这一点:

I am trying to achieve this by setting the cdata-section-elements attribute of my xslt's xsl:output element to include the name of the password element:

<xsl:output method="xml" indent="yes" cdata-section-elements="password"/>

这不起作用.我在下面包含了示例代码、输入、xslt、当前输出和所需的输出.

This is not working. I have included example code, input, xslt, current output and desired output below.

我需要更改什么才能在 CDATA 部分中获取密码?

What do I need to change to get the password inside a CDATA section?

计划:

using System;
using System.IO;
using Saxon.Api;

namespace XsltTest {
    class Program {
        static void Main(string[] args) {
            var xslt = new FileInfo(@"transform.xslt");
            var input = new FileInfo(@"input.xml");
            var output = new FileInfo(@"output.xml");
            var processor = new Processor();
            var compiler = processor.NewXsltCompiler();
            var executable = compiler.Compile(new Uri(xslt.FullName));
            var transformer = executable.Load();
            var destination = new DomDestination();
            using (var inputStream = input.OpenRead()) {               
                transformer.SetInputStream(inputStream, new Uri(Path.GetTempPath()));
                transformer.SetParameter(
                    new QName("password"),
                    new XdmAtomicValue("secret"));
                transformer.Run(destination);
            }
            destination.XmlDocument.Save(output.FullName);
        }
    }
}

Transform.xslt:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
  <xsl:output method="xml" indent="yes" cdata-section-elements="password"/>
  <xsl:param name="password" />
  <xsl:template match="@* | node()">
    <bar>
      <username>
        <xsl:value-of select="//username"/>
      </username>
      <password>
        <xsl:value-of select="$password"/>
      </password>
    </bar>
  </xsl:template>
</xsl:stylesheet>

Input.xml:

<?xml version="1.0" encoding="utf-8" ?>
<foo>
  <username>john</username>
</foo>

输出.xml:

<bar>
  <username>john</username>
  <password>secret</password>
</bar>

密码没有放在 CDATA 部分.

The password is not put inside a CDATA section.

预期结果:

<bar>
  <username>john</username>
  <password><![CDATA[secret]]></password>
</bar>

推荐答案

xsl:output 上的选项会影响序列化器的动作，如果输出没有被序列化，则它们不起作用.您正在写入 DomDestination 而不是序列化程序(然后使用 DOM 方法序列化 DOM，该方法对 XSLT xsl:output 声明一无所知).

The options on xsl:output affect the actions of the serializer, and if the output is not serialized, they have no effect. You are writing to a DomDestination rather than to a Serializer (and then serializing the DOM using DOM methods, which know nothing about the XSLT xsl:output declaration).

无论如何，您的前提是错误的:密码可以包含任何字符，因此需要将其放入 CDATA 部分."如果没有 cdata-section-elements，特殊字符将使用实体引用序列化，例如 < 和 &，这应该可以正常工作.

In any case your premise is wrong: "The password can contain any characters so it needs to be put in a CDATA section." Without cdata-section-elements, special characters will be serialized using entity references such as < and &, which should work just fine.

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