C# XSLT 转换器使用自闭 HTML 标签，这些标签无效

Question

我想使用 C# 将 xml 字符串转换为带有 xslt 的 html 字符串。但是，一些标签被转换为自关闭。实际上，这是 XSLT self-closing tags issue and Prevent XslCompiledTransform from using self-closing tags 的副本。不幸的是，无法使其与给他们的答案一起使用。下面是一个最小的 fiddle.

https://dotnetfiddle.net/zsqent

当前输出为

<div>
  <div class="test" />
  <i class="test" />
</div>

而我需要它

<div>
  <div class="test"></div>
  <i class="test"></i>
</div>

以防 fiddle 被删除，这里是它的副本

using System;
using System.IO;
using System.Xml;
using System.Xml.Linq;
using System.Xml.Xsl;
                    
public class Program
{
    public static void Main()
    {
        var xml = @"<a href=""#"" target=""_blank"">Click here</a>";
        var xsl = @"<?xml version=""1.0"" encoding=""UTF-8""?>
<xsl:stylesheet version=""1.0"" xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"">
    <xsl:strip-space elements=""*"" />
    <xsl:template match=""/"">
        <div>
            <div class=""test""></div>
            <i class=""test""></i>
        </div>
    </xsl:template>
</xsl:stylesheet>";
        
        var html = TransformXml(xml, xsl);
        
        Console.WriteLine(html);
    }
    
    public static string TransformXml(string xml, string xslt)
    {
        var transformedDocument = new XDocument();

        using (var xsltStringReader = new StringReader(xslt))
        {
            var xmlReaderSettings = new XmlReaderSettings();
            xmlReaderSettings.DtdProcessing = DtdProcessing.Parse;
            using (XmlReader xsltReader = XmlReader.Create(xsltStringReader, xmlReaderSettings))
            {
                var transformer = new XslCompiledTransform();
                transformer.Load(xsltReader);
                using (var xmlStringReader = new StringReader(xml))
                {
                    using (XmlReader xmlReader = XmlReader.Create(xmlStringReader, xmlReaderSettings))
                    {
                        using (XmlWriter newDocumentWriter = transformedDocument.CreateWriter())
                        {
                            transformer.Transform(xmlReader, newDocumentWriter);
                        }
                    }
                }
            }
        }

        return transformedDocument.ToString();
    }
}

Answer 1

请尝试以下解决方案。

XSLT 属性可以使用单引号。

(1) XSLT输出子句应该如下：

<xsl:output indent='yes' media-type='text/html' method='html' omit-xml-declaration='yes' encoding='UTF-8' />

(2) 要使用的重要参数：xsl.OutputSettings。否则，不会考虑 XSLT 设置。

c#

public static string TransformXml(string xml, string xslt)
{
    string output = String.Empty;

    using (StringReader srt = new StringReader(xslt))
    using (StringReader sri = new StringReader(xml))
    {
        using (XmlReader xrt = XmlReader.Create(srt))
        using (XmlReader xri = XmlReader.Create(sri))
        {
            XslCompiledTransform xsl = new XslCompiledTransform();
            xsl.Load(xrt);
            using (StringWriter sw = new StringWriter())
            using (XmlWriter xwo = XmlWriter.Create(sw, xsl.OutputSettings)) // use OutputSettings of xsl, so it can be output as HTML
            {
                xsl.Transform(xri, xwo);
                output = sw.ToString();
            }
        }
    }

    return output;
}

C# XSLT 转换器使用自闭 HTML 标签，这些标签无效

C# XSLT transformer uses self closing HTML tags which are invalid

html

c#

xml

xslt