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Posted to dev@xalan.apache.org by "Mario Jauvin (JIRA)" <ji...@apache.org> on 2018/05/10 19:30:00 UTC
[jira] [Commented] (XALANJ-2615) Exception accessing a public
method using Java extension
[ https://issues.apache.org/jira/browse/XALANJ-2615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16470995#comment-16470995 ]
Mario Jauvin commented on XALANJ-2615:
--------------------------------------
I have a code fix I could supply
> Exception accessing a public method using Java extension
> --------------------------------------------------------
>
> Key: XALANJ-2615
> URL: https://issues.apache.org/jira/browse/XALANJ-2615
> Project: XalanJ2
> Issue Type: Bug
> Security Level: No security risk; visible to anyone(Ordinary problems in Xalan projects. Anybody can view the issue.)
> Components: Xalan-extensions
> Affects Versions: 2.7.2
> Reporter: Mario Jauvin
> Assignee: Steven J. Hathaway
> Priority: Major
>
> Using this sample stylesheet:
>
> {code:java}
> <?xml version="1.0" encoding="UTF-8"?>
> <stylesheet version="1.0" xmlns="http://www.w3.org/1999/XSL/Transform"
> xmlns:java="http://xml.apache.org/xalan/java">
> <template match="/">
> <!-- <variable name="p" select="java:exec(java:java.lang.Runtime.getRuntime(), 'cmd /c dir /b')"/> -->
> <variable name="p" select="java:exec(java:java.lang.Runtime.getRuntime(), 'cmd /c echo oui&echo non')"/>
> <variable name="is" select="java:getInputStream($p)"/>
> </template>
> </stylesheet>{code}
>
> and this XML file
>
> {code:java}
> <?xml version="1.0" encoding="UTF-8"?>
> <dummy/>{code}
>
> When accessing the getInputStream method of the java.lang.Process class using XALAN I get this error:
>
> {noformat}
> 15:16:01,284 INFO [main] Main - javax.xml.transform.TransformerFactory=org.apache.xalan.processor.TransformerFactoryImpl
> 15:16:01,287 INFO [main] Main - java.endorsed.dirs=C:\radws\workspace\build-env\.metadata\.plugins\org.eclipse.wst.xsl.jaxp.launching\endorsed
> 15:16:01,293 INFO [main] Main - launchFile: C:\radws\workspace\build-env\.metadata\.plugins\org.eclipse.wst.xsl.jaxp.launching\launch\launch.xml
> 15:16:01,503 INFO [main] JAXPSAXProcessorInvoker - Transforming...
> file:/C:/radws/workspace/build-env/add-infra/samples/t1.xsl; Line #7; Column #57; java.lang.IllegalAccessException: Class org.apache.xalan.extensions.ExtensionHandlerJavaPackage can not access a member of class java.lang.ProcessImpl with modifiers "public"
> file:/C:/radws/workspace/build-env/add-infra/samples/t1.xsl; Line #7; Column #57; java.lang.NullPointerException
> 15:16:01,533 INFO [main] JAXPSAXProcessorInvoker - Done.{noformat}
> This problem is due to the fact that the class ProcessImpl is not exactly identical to the interface java.lang.Process signature. If you set the override to true in the method object (using AccessibleObject.setAccessible) you will be able to invoke the method. This works in the JRE 8 xsl transformer.
>
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