Error when mapping an XML coming as in Source Element

Question

Hi,
We have a requirement where the XML is sent in an element as given below :
The Incoming Payload is of the below format :
Source :
<?xml version="1.0" encoding="UTF-8"?>
<ResponsePayload>
   <RespString><?xml version="1.0" encoding="UTF-8"?>
<Devices>
   <Device>1</Device>
   <Name>1</Name>
</Devices></RespString>
</ResponsePayload>
The target XML is below :
Target:
<?xml version="1.0" encoding="UTF-8"?>
<Devices>
   <Device/>
   <Name/>
</Devices>
I used the below xslt mappings in two steps as suggested by Udo .
Re: Xml String mapped to XML Node
XSLT Mapping1 :
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
     <xsl:output omit-xml-declaration="yes"/>
     <xsl:template match="/">
          <xsl:for-each select="//RespString">
               <xsl:value-of select="." disable-output-escaping="yes"/>
          </xsl:for-each>
     </xsl:template>
</xsl:stylesheet>
XSLT Mapping 2 :
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
     <xsl:template match="/">
          <ResponsePayload>
               <xsl:copy-of select="//Devices"/>
          </ResponsePayload>
     </xsl:template>
</xsl:stylesheet>
When executing Iam getting the belwo error :
javax.xml.transform.TransformerException: javax.xml.transform.TransformerException: com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: The processing instruction target matching "[xX][mM][lL]" is not allowed
cansomeone help me the reason for the error and how I can correct it .
Thanks
Rajesh

Answer 1

Hi Rajesh,
i can give you different approach...if the sender side is an File adapter and if ur picking the XML or CSV then write a module in sender file adapter to change the XML file.
Characters like "<" and "&" are illegal in XML elements.
"<" will generate an error because the parser interprets it as the start of a new element.
so u need to add "<![CDATA[" and ends with "]]>"......now the data will come into PI as <![CDATA[<?xml version="1.0" encoding="UTF-8"?>]].
in the target side the data will be passed as <?xml version="1.0" encoding="UTF-8"?>.
Regards,
Phani