【发布时间】：2016-08-23 02:45:32
【问题描述】：
我在 wso2 esb 4.8.1 中使用 XSLT 调解器与 XSLT 转换器调解器作斗争。 xslt 是：
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fn="http://www.w3.org/2005/02/xpath-functions"
xmlns:ns="http://ep.service.ims.com"
xmlns:ax21="http://ep.service.ims.com/xsd"
exclude-result-prefixes="ns fn">
<xsl:param name="amount"/>
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="/">
<xsl:apply-templates select="//ns:getResponse" />
</xsl:template>
<xsl:template match="ns:getResponse" xmlns:ns="http://ep.service.ims.com">
<ep:credit xmlns:ep="http://ep.service.ims.com" xmlns:xsd="http://ep.service.ims.com/xsd">
<ep:info>
<xsd:amount>
<xsl:value-of select="$amount"/>
</xsd:amount>
<xsd:personInfo>
<xsd:address>
<xsl:value-of select="ns:return/ax21:address"/>
</xsd:address>
<xsd:id>
<xsl:value-of select="ns:return/ax21:id"/>
</xsd:id>
<xsd:name>
<xsl:value-of select="ns:return/ax21:name"/>
</xsd:name>
</xsd:personInfo>
</ep:info>
</ep:credit>
</xsl:template>
</xsl:stylesheet>
请求 XML 是：
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<ns:getResponse xmlns:ns="http://ep.service.ims.com">
<ns:return xsi:type="ax23:PersonInfo" xmlns:ax23="http://ep.service.ims.com/xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ax23:address>IMS Heath, Omega C, India, bnag</ax23:address>
<ax23:id>100</ax23:id>
<ax23:name>WSO2</ax23:name>
</ns:return>
</ns:getResponse>
</soapenv:Body>
</soapenv:Envelope>
我在 Eclipse 和一些在线工具（如 (http://xslt.online-toolz.com/tools/xslt-transformation.php) 中尝试了 XSLT 转换，它工作正常。但是，当我在 WSO2 ESB 中尝试相同的操作时，我面临以下异常.....
org.apache.synapse.mediators.transform.XSLTMediator} -
Fatal error occurred in stylesheet parsing :
net.sf.saxon.trans.XPathException:
The supplied file does not appear to be a stylesheet Value {name ='null', keyValue ='xslt1'}
{org.apache.synapse.mediators.transform.XSLTMediator}
javax.xml.transform.TransformerConfigurationException: Failed to compile stylesheet. 1 error detected.
at net.sf.saxon.PreparedStylesheet.prepare(PreparedStylesheet.java:220)
org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:170)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:225)
TID: [0] [ESB] [2014-10-08 13:53:20,705] ERROR
{org.apache.synapse.mediators.transform.XSLTMediator} -
Unable to perform XSLT transformation using :
Value {name ='null', keyValue ='xslt1'} against source XPath : s11:Body/child::*[position()=1] | s12:Body/child::*[position()=1]
reason : Error creating XSLT transformer using : Value {name ='null', keyValue ='xslt1'}
{org.apache.synapse.mediators.transform.XSLTMediator}
org.apache.synapse.SynapseException: Error creating XSLT transformer using : Value {name ='null', keyValue ='xslt1'} at
org.apache.synapse.mediators.AbstractMediator.handleException(AbstractMediator.java:313)
Caused by: javax.xml.transform.TransformerConfigurationException:
Failed to compile stylesheet. 1 error detected.
突触代理 xml 是：
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse" name="CreditProxy" transports="https http" startOnLoad="true" trace="disable">
<target>
<inSequence>
<log level="full">
<property name="sequence" value="inSequence - request for CreditProxy"/>
</log>
<property xmlns:pep="http://com.ims.proxy" name="ORG_ID" expression="//pep:credit/pep:id"/>
<property xmlns:pep="http://com.ims.proxy" name="ORG_AMOUNT" expression="//pep:credit/pep:amount"/>
<enrich>
<source type="inline" clone="true">
<pep:get xmlns:pep="http://ep.service.ims.com">
<pep:id>?</pep:id>
</pep:get>
</source>
<target type="body"/>
</enrich>
<enrich>
<source type="property" property="ORG_ID"/>
<target xmlns:pep="http://ep.service.ims.com" xpath="//pep:get/pep:id"/>
</enrich>
<log level="full">
<property name="sequence" value="inSequence - request for PersonInfoService"/>
</log>
<property name="STATE" value="PERSON_INFO_REQUEST"/>
<send>
<endpoint key="PersonInfoEpr"/>
</send>
</inSequence>
<outSequence>
<switch source="get-property('STATE')">
<case regex="PERSON_INFO_REQUEST">
<log level="full">
<property name="sequence" value="outSequence - STATE 01 - response from PersonInfoService"/>
</log>
<xslt key="xslt">
<property name="amount" expression="get-property('ORG_AMOUNT')"/>
</xslt>
<log level="full">
<property name="sequence" value="outSequence - STATE 01 - request for CreditService"/>
</log>
<property name="STATE" value="CREDIT_REQUEST"/>
<send>
<endpoint key="CreditEpr"/>
</send>
</case>
<case regex="CREDIT_REQUEST">
<log level="full">
<property name="sequence" value="outSequence - STATE 02 - response from CreditService"/>
</log>
<send/>
</case>
</switch>
</outSequence>
</target>
<publishWSDL uri="file:resources/CreditProxy.wsdl"/>
</proxy>
如果 XSLT 转换在其他工具中工作正常，可能是什么原因导致异常？
【问题讨论】：
-
您确定错误消息是指上面显示的 XSLT 吗？在 XSLT 中找不到 XPath 表达式
s11:Body/child::*[position()=1] | s12:Body/child::*[position()=1。 -
在您的代理 def 中，您的 xsl 的键是“xslt”，但在您的错误消息中，keyValue 是“xslt1”：您如何在 ESB 中将此 xsl 定义为本地条目？你能分享这个本地条目 def 吗？