php-java-bridge-users Mailing List for PHP/Java Bridge

I tried running my website with the standalone, command-line deployment
of the Java Bridge...

 $ java -jar JavaBridge.jar SERVLET:8080

...which seemed to work well.  That is, until a random line of code,
which normally executes just fine, started throwing a ClassCastException
each time it was encountered:

  self::$jaxbContext =3D new JavaClass('javax.xml.bind.JAXBContext');
  self::$talkContext =3D
self::$jaxbContext->newInstance('org.indivo.xml.talk');

Once the CCE appeared, my application could not recover until I
restarted the Bridge and Apache.

I'd never had a problem with those lines with 3.0.7 using the PHP
extension, and I don't see the problem at all while running 4.0.7 from
Tomcat.  Does such a scenario ring any bells?  (Exception text pasted
below.)

Thanks for your help,
Jonathan



[[o:Exception]:"java.lang.Exception: Invoke failed:
[[c:JAXBContext]]->newInstance((o:String)[o:String]). Cause:
java.lang.ClassCastException:
com.sun.xml.bind.v2.runtime.JAXBContextImpl Responsible VM:
1.5.0_08@http://java.sun.com/" at:
#-14 javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:149)
#-13 javax.xml.bind.ContextFinder.find(ContextFinder.java:285)
#-12 javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
#0 http://localhost:8080/JavaBridge/java/Java.inc(151):
java_ThrowExceptionProxyFactory->getProxy(2, true)
#1 http://localhost:8080/JavaBridge/java/Java.inc(304):
java_Arg->getResult(true)
#2 http://localhost:8080/JavaBridge/java/Java.inc(310):
java_Client->getWrappedResult(true)
#3 http://localhost:8080/JavaBridge/java/Java.inc(489):
java_Client->getResult()
#4 http://localhost:8080/JavaBridge/java/Java.inc(735):
java_Client->invokeMethod(1, 'newInstance', Array)
#5 http://localhost:8080/JavaBridge/java/Java.inc(853):
java_JavaProxy->__call('newInstance', Array)
#6 [inte in http://localhost:8080/JavaBridge/java/Java.inc on line 129

Hi Sharad,

> Java JavaBridge /tmp/.php_java 5
> /var/log/javalog/php-java-bridge

what is "Java" and what does "JavaBridge" do?

I assume Java is some kind of shell script and
JavaBridge is some binary which somehow calls
modules/java (the gcj-compiled backend binary).

Do you see any relevant messages in the log file
(/var/log/javalog/php-java-bridge)?


> I am using gcj java 3.2.3. on linux OS.

Which linux operating system do you use?


> Hope Now you can suggest me what the problem behind
> this.

No idea. gcj 3.2.3 is quite old and doesn't support
most of the JDK1.4 features which the JavaBridge
requires.

However, if the gcj-compiled binary crashes (due to
missing feature probably), it should write a stack
trace or at least a core dump. In any case it should
not silently terminate.

Isn't it possible to use a recent version of "GNU
Java"? Or better: Use a real Java VM and the pure PHP
implementation of the PHP/Java Bridge.

Since the Sun JDK is now free software, there is no
reason to use "GNU Java" anymore.


Regards,
Jost Boekemeier



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Hello Jost,
I am starting server through this.

Java JavaBridge /tmp/.php_java 5 /var/log/javalog/php-java-bridge

I am using gcj java 3.2.3. on linux OS.

Hope Now you can suggest me what the problem behind this.

Although I am highly obilized of your suggestion which you given to me
right now.


> Hi Sharad,
>
>> start php-java server ,its start but after 1 -2
>
> how do you start java? Do you start a real servlet
> engine or do you start the built-in servlet engine via
> java -jar JavaBridge.jar SERVLET_LOCAL:8080 ?
>
>
>> minute its stop.WHy it
>
> Sounds like a java problem. Which java version do you
> use on which operating system?
>
>> is happening .Can any body suggest to me what I
>> should do .
>
> You could set the log level to 6 and check the log
> file. But unless you call
>
>   java("java.lang.System")->exit(0); [1]
>
> the Java VM should not simply terminate.
>
>
> Regards,
> Jost Boekemeier
>
> [1] This behaviour can be switched off via a java
> policy file, of course.
>
>
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-- 
Thanks and Regards
Sharad Singh
Sr. Project Associate
EE, IIT Kanpur
Mob:+91- 9450 328 117

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