使用groovy脚本或xslt删除xml版本和其他标记

import groovy.xml.StreamingMarkupBuilder

def xml = '''
<?xml version="1.0" encoding="UTF-8"?>
<root>
    <element1>Value 1</element1>
    <element2>Value 2</element2>
</root>
'''

def builder = new StreamingMarkupBuilder()
def parsedXml = new XmlSlurper().parseText(xml)

def result = builder.bind {
    mkp.yield parsedXml
}

println result.toString()

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:output method="xml" omit-xml-declaration="yes"/>

    <xsl:template match="/">
        <xsl:copy-of select="."/>
    </xsl:template>

</xsl:stylesheet>