generate the html DOCTYPE element using xsl:output
If you would like to generate the DOCTYPE specification in the html output when using xslt transformation, you can not write the code as following:
method: identifies the method that should be used for outputting the result, it can be one of xml, html or text.
encoding: specifies the preferred character encoding that the XSLT processor should use to encode sequences of characters as sequences of bytes
doctype-public: specifies the public identifier to be used in the document type declaration. If given this attribute it will generate a DOCTYPE in the output document, such as <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
doctype-system: specifies the system identifier to be used in the document type declaration. If given this attribute it will generate a DOCTYPE in the output document, such as <!DOCTYPE html SYSTEM "./dtds/book.dtd">
If both the doctype-public and doctype-system attributes are specified in the xsl:output element, for example, <xsl:output method="html" doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN" doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" /> will generate the DOCTYPE like: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">. In this situation the doctype-system only identifies the resource(DTD) referenced.
cdata-section-elements: specifies a list of the names of elements whose text node children should be output using CDATA sections, for example, cdata-section-elements="script" will result in all the text in the elements <script></script> are treated just as they are in <![CDATA[]]> by the XSLT processor.
The c# code handling the transformation is below:
<?
xml version="1.0" encoding="utf-8"
?>
< xsl:stylesheet version ="1.0"
xmlns:xsl ="http://www.w3.org/1999/XSL/Transform" >
< xsl:template match ="/" >
<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html >
< body >
</ body >
</ html >
</ xsl:template >
</ xsl:stylesheet >
It is because we can not write the DOCTYPE element in the xslt file, it's not a well-formed xml element. To achieve this goal you must use
xsl:output, just as below
< xsl:stylesheet version ="1.0"
xmlns:xsl ="http://www.w3.org/1999/XSL/Transform" >
< xsl:template match ="/" >
<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html >
< body >
</ body >
</ html >
</ xsl:template >
</ xsl:stylesheet >
<?
xml version="1.0" encoding="utf-8"
?>
< xsl:stylesheet version ="1.0"
xmlns:xsl ="http://www.w3.org/1999/XSL/Transform" >
< xsl:output
method ="html"
encoding ="utf-8"
doctype-public ="-//W3C//DTD XHTML 1.0 Transitional//EN"
doctype-system ="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" />
< xsl:template match ="/" >
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< title > < / title >
</ head >
< body >
</ body >
</ html >
</ xsl:template >
</ xsl:stylesheet >
The result is something like:
< xsl:stylesheet version ="1.0"
xmlns:xsl ="http://www.w3.org/1999/XSL/Transform" >
< xsl:output
method ="html"
encoding ="utf-8"
doctype-public ="-//W3C//DTD XHTML 1.0 Transitional//EN"
doctype-system ="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" />
< xsl:template match ="/" >
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< title > < / title >
</ head >
< body >
</ body >
</ html >
</ xsl:template >
</ xsl:stylesheet >
<!
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< title ></ title >
</ head >
< body >
</ body >
</ html >
in the
xsl:output element:
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< title ></ title >
</ head >
< body >
</ body >
</ html >
method: identifies the method that should be used for outputting the result, it can be one of xml, html or text.
encoding: specifies the preferred character encoding that the XSLT processor should use to encode sequences of characters as sequences of bytes
doctype-public: specifies the public identifier to be used in the document type declaration. If given this attribute it will generate a DOCTYPE in the output document, such as <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
doctype-system: specifies the system identifier to be used in the document type declaration. If given this attribute it will generate a DOCTYPE in the output document, such as <!DOCTYPE html SYSTEM "./dtds/book.dtd">
If both the doctype-public and doctype-system attributes are specified in the xsl:output element, for example, <xsl:output method="html" doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN" doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" /> will generate the DOCTYPE like: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">. In this situation the doctype-system only identifies the resource(DTD) referenced.
cdata-section-elements: specifies a list of the names of elements whose text node children should be output using CDATA sections, for example, cdata-section-elements="script" will result in all the text in the elements <script></script> are treated just as they are in <![CDATA[]]> by the XSLT processor.
The c# code handling the transformation is below:
using
System;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;
using System.Text;
using System.IO;
this .Response.ContentType = " text/html " ;
// retrieve the xml document object from the model
XmlDocument doc = BoxImpl.BoxXml( this ._templateId, this ._type, this ._boxId, this ._op);
// in .NET framework 2.0, it is recommended that use the XslCompiledTransform instead of XslTransform
XslCompiledTransform transform = new XslCompiledTransform();
transform.Load( this .Server.MapPath( " cc.xsl " ));
MemoryStream stream = new MemoryStream();
transform.Transform(doc.CreateNavigator(), null , stream);
// maybe the Position was moved to the end of the MemoryStream while transforming,
// so it's necessary to set this attribute to 0 before reading the stream
stream.Position = 0 ;
// the encoding attribute specified in the xsl:output node is utf-8,
// so here we read the output stream using the System.Text.Encoding.UTF8 correspondingly
StreamReader reader = new StreamReader(stream, System.Text.Encoding.UTF8);
this .Response.Write(reader.ReadToEnd());
reader.Close();
stream.Close();
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;
using System.Text;
using System.IO;
this .Response.ContentType = " text/html " ;
// retrieve the xml document object from the model
XmlDocument doc = BoxImpl.BoxXml( this ._templateId, this ._type, this ._boxId, this ._op);
// in .NET framework 2.0, it is recommended that use the XslCompiledTransform instead of XslTransform
XslCompiledTransform transform = new XslCompiledTransform();
transform.Load( this .Server.MapPath( " cc.xsl " ));
MemoryStream stream = new MemoryStream();
transform.Transform(doc.CreateNavigator(), null , stream);
// maybe the Position was moved to the end of the MemoryStream while transforming,
// so it's necessary to set this attribute to 0 before reading the stream
stream.Position = 0 ;
// the encoding attribute specified in the xsl:output node is utf-8,
// so here we read the output stream using the System.Text.Encoding.UTF8 correspondingly
StreamReader reader = new StreamReader(stream, System.Text.Encoding.UTF8);
this .Response.Write(reader.ReadToEnd());
reader.Close();
stream.Close();