Using Xerces in an unsigned applet?

[borbjo]

I'm trying to use Xerces in an unsigned applet. I know it should be possible, but I get an AccessControlException:

        try {

            XMLReader parser = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");


            treemodel = new XMLTreeModel( new CategoryNode(-1,"root") );

            parser.setContentHandler(treemodel);

            parser.parse(                    // <- this line will throw exception

                    new InputSource(

                            new StringReader(

                                    theXML

                            )

                    )

            );

            this.setModel(treemodel);

        } catch (SAXException e) {

            e.printStackTrace();  // Just print the stack trace

        } catch (IOException e) {

            e.printStackTrace();  // Just print the stack trace

        }

Here's the exception:

java.security.AccessControlException: access denied (java.util.PropertyPermission entityExpansionLimit read)

at java.security.AccessControlContext.checkPermission(AccessControlContext.java:269)

at java.security.AccessController.checkPermission(AccessController.java:401)

at java.lang.SecurityManager.checkPermission(SecurityManager.java:524)

at java.lang.SecurityManager.checkPropertyAccess(SecurityManager.java:1276)

at java.lang.System.getProperty(System.java:573)

at java.lang.Integer.getInteger(Integer.java:814)

at java.lang.Integer.getInteger(Integer.java:731)

at org.apache.xerces.impl.XMLEntityManager.reset(XMLEntityManager.java:1077)

at org.apache.xerces.parsers.BasicParserConfiguration.reset(BasicParserConfiguration.java:544)

at org.apache.xerces.parsers.DTDConfiguration.reset(DTDConfiguration.java:630)

at org.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguration.java:502)

at org.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguration.java:585)

at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:152)

at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1142)

at no.xait.payg.toc.CategoryTree.<init>(CategoryTree.java:55)

at no.xait.payg.toc.TocAdmin.init(TocAdmin.java:52)

at sun.applet.AppletPanel.run(AppletPanel.java:353)

at java.lang.Thread.run(Thread.java:534)

I've also tried using the parser directly (SAXParser parser = new SAXParser()). It made no difference.


Anyone know what causes this, and how to fix it? It seems to me that it has something to do with it trying to read a System property.

 

[sedj]

This may help ...

http://java.sun.com/webservices/docs/1.2/jaxp/ReleaseNotes.html

(search for entity-expansion-limit on the page)

What browser are you using ? There seems to be some problem with Netscape ...

http://forums.cookienest.com/viewtopic.php?t=1167

 

[borbjo]

Thanks for those links. I am using Netscape yes, but it does not appear to be a Netscape problem. I just tested the applet in IE on WinXP and got the exact same response.

Also, I tried setting the property it gets an access exception when trying to retrieve (hoping that it wouldn't try to look it up then), but that didn't solve the problem either.

parser.setProperty("[URL unfurl="true"]http://apache.org/xml/properties/entity-expansion-limit",[/URL] new Integer(100000));