Hi Peter,
Peter A wrote:
> I spoke too soon. The code in the previous message works in applications
> and applets as long as it doesn't encounter a class variable that's
> composed of a single letter name. If it does contain a class variable
> with a single letter then it will work as an application but throw the
> following
> exception inside an applet. This seems a bit quirky. I vaguely remember
> needing to modify JavaBeanConverter when i submitted that patch/hack a
> while ago.
This has nothing to do with the JavaBeanConverter or with the name. You can
see from the stack trace, that georegression.struct.se.Se3_F64 was handled
by the ReflectionConverter ... which will *never* work in an untrusted
applet. It simply seems that georegression.struct.se.Se3_F64 is not a
JavaBean (resp. has no public default constructor).
- Jörg
>
> - Peter
>
> Exception in thread "Thread-1"
> com.thoughtworks.xstream.converters.ConversionException: access denied
> ("java.lang.reflect.ReflectPermission" "suppressAccessChecks") : access
> denied ("java.lang.reflect.ReflectPermission" "suppressAccessChecks")
> ---- Debugging information ----
> message : access denied ("java.lang.reflect.ReflectPermission"
> "suppressAccessChecks")
> cause-exception : java.security.AccessControlException
> cause-message : access denied ("java.lang.reflect.ReflectPermission"
> "suppressAccessChecks")
> class : georegression.struct.se.Se3_F64
> required-type : georegression.struct.se.Se3_F64
> converter-type :
> com.thoughtworks.xstream.converters.javabean.JavaBeanConverter
> path : /boofcv.struct.calib.StereoParameters/rightToLeft/r
> line number : 31
> class[1] : boofcv.struct.calib.StereoParameters
> version : not available
> -------------------------------
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79)
> at
>
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
> at
>
com.thoughtworks.xstream.converters.javabean.JavaBeanConverter.unmarshal(JavaBeanConverter.java:134)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
> at
>
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
> at
>
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1185)
> at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1169)
> at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1040)
> at boofcv.io.UtilIO.loadXML(UtilIO.java:152)
> at
>
boofcv.alg.geo.rectify.ShowRectifyCalibratedApp.changeInput(ShowRectifyCalibratedApp.java:154)
> at
>
boofcv.gui.SelectAlgorithmAndInputPanel.performChangeInput(SelectAlgorithmAndInputPanel.java:326)
> at
>
boofcv.gui.SelectAlgorithmAndInputPanel.access$200(SelectAlgorithmAndInputPanel.java:44)
> at
>
boofcv.gui.SelectAlgorithmAndInputPanel$8.run(SelectAlgorithmAndInputPanel.java:300)
> Caused by: java.security.AccessControlException: access denied
> ("java.lang.reflect.ReflectPermission" "suppressAccessChecks")
> at
>
java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)
> at
> java.security.AccessController.checkPermission(AccessController.java:560)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
> at
>
java.lang.reflect.AccessibleObject.setAccessible(AccessibleObject.java:128)
> at
>
com.thoughtworks.xstream.converters.reflection.FieldDictionary.buildMap(FieldDictionary.java:148)
> at
>
com.thoughtworks.xstream.converters.reflection.FieldDictionary.fieldOrNull(FieldDictionary.java:113)
> at
>
com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.getFieldOrNull(PureJavaReflectionProvider.java:193)
> at
>
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.canAccess(AbstractReflectionConverter.java:61)
> at
>
com.thoughtworks.xstream.converters.reflection.ReflectionConverter.canConvert(ReflectionConverter.java:41)
> at
>
com.thoughtworks.xstream.core.DefaultConverterLookup.lookupConverterForType(DefaultConverterLookup.java:56)
> at
>
com.thoughtworks.xstream.XStream$1.lookupConverterForType(XStream.java:498)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:56)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
> at
>
com.thoughtworks.xstream.converters.javabean.JavaBeanConverter.unmarshal(JavaBeanConverter.java:134)
> at
>
com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
> ... 18 more
>
>
> On Wed, Jun 4, 2014 at 12:08 PM, Jörg Schaible
> <[email protected]
>> wrote:
>
>> Peter A wrote:
>>
>> > Ok here is what worked successfully inside an applet:
>> >
>> > ---------------------- BEGIN ----------------------------
>> > XStream xstream = new XStream(new PureJavaReflectionProvider(),new
>> > XppDriver(),
>> > new
>> > ClassLoaderReference(UtilIO.class.getClassLoader()));
>> > xstream.registerConverter(new
>> > JavaBeanConverter(xstream.getMapper()));
>> > ----------------------- END -----------------------------
>> >
>> > Where UtilIO is just a random class in my code. At one point I made
>> > the mistake of passing in Reader.class which caused weird class not
>> > found exceptions to be thrown.
>> >
>> > I would recommend adding that somewhere to the tutorial since the
>> > default
>> > doesn't work in Applets. Thanks again for the help!
>>
>> Actually the context classloader should do:
>>
>> Thread.currentThread().getContextClassloader();
>>
>> Cheers,
>> Jörg
>>
>>
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>>
>>
>>
>
>
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