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

I changed  from SDK  to JDK (jdk-6u10-linux-i586), but still get error:

Oct 24, 2008 5:53:17 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /JavaBridge threw load() exception
java.lang.IllegalAccessError: class php.java.script.servlet.PhpScriptTemporarilyOutOfResourcesException cannot access its superclass php.java.script.PhpScriptException
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

Som more info about the software installed:
host:/opt/tomcat/lib # /opt/tomcat/bin/catalina.sh version
Using CATALINA_BASE:   /opt/tomcat
Using CATALINA_HOME:   /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME:       /usr
Server version: Apache Tomcat/6.0.18
Server built:   Jul 22 2008 02:00:36
Server number:  6.0.18.0
OS Name:        Linux
OS Version:     2.4.28-vs1.29
Architecture:   i386
JVM Version:    1.6.0_03-b05
JVM Vendor:     Sun Microsystems Inc.

JavaBridge was correclty deployed from JavaBridge.war under webapps.


  ----- Original Message ----- 
  From: php...@li... 
  To: php...@li... 
  Sent: Friday, October 24, 2008 2:23 PM
  Subject: [Php-java-bridge-users] NoClassDefFoundError


  When Tomcat  starts I got an error msg showing JavaBridge was not loaded. Would someone help to find the cause?

  Oct 24, 2008 12:45:42 PM org.apache.catalina.core.StandardContext listenerStart
  SEVERE: Error configuring application listener of class php.java.servlet.RequestListener
  java.lang.NoClassDefFoundError: javax/servlet/ServletRequestListener
          at java.lang.ClassLoader.defineClass1(Native Method)
          at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
          at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
          at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
          at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
          at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
          at java.security.AccessController.doPrivileged(Native Method)
          at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
          at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
          at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3786)
          at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
          at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
          at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
          at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
          at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:830)
          at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:719)
          at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
          at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
          at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
          at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
          at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
          at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
          at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
          at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
          at org.apache.catalina.core.StandardService.start(StandardService.java:516)
          at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
          at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
          at java.lang.reflect.Method.invoke(Method.java:597)
          at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
          at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
  Oct 24, 2008 12:45:42 PM org.apache.catalina.core.StandardContext listenerStart
  SEVERE: Skipped installing application listeners due to previous error(s)
  Oct 24, 2008 12:45:42 PM org.apache.catalina.core.ApplicationContext log
  INFO: ContextListener: contextInitialized()
  Oct 24, 2008 12:45:42 PM org.apache.catalina.core.ApplicationContext log
  INFO: SessionListener: contextInitialized()

  Accessing http://localhost:8080 I get TOmcat homepage, but http://localhost:8080/JavaBridge/ gives me 404 / The requested resource () is not available.

  When I run "java -jar JavaBridge.jar SERVLET:8080 3 javabridge_servlet.log" everything works fine, but I can't get it to work with Tomcat.
  May be it's related o Tomcat's permissions, but I'm not sure which settings to change. I already inserted in catalina.policy:
  grant codeBase "file:${catalina.home}/webapps/JavaBridge/WEB-INF/lib/-" {
      permission java.security.AllPermission;
   };
  with no success, no matter if I start tomcat with or without "-security" parameter


  Any clue?

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  https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users

When Tomcat  starts I got an error msg showing JavaBridge was not loaded. Would someone help to find the cause?

Oct 24, 2008 12:45:42 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class php.java.servlet.RequestListener
java.lang.NoClassDefFoundError: javax/servlet/ServletRequestListener
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3786)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:830)
        at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:719)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at org.apache.catalina.core.StandardService.start(StandardService.java:516)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Oct 24, 2008 12:45:42 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Oct 24, 2008 12:45:42 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Oct 24, 2008 12:45:42 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()

Accessing http://localhost:8080 I get TOmcat homepage, but http://localhost:8080/JavaBridge/ gives me 404 / The requested resource () is not available.

When I run "java -jar JavaBridge.jar SERVLET:8080 3 javabridge_servlet.log" everything works fine, but I can't get it to work with Tomcat.
May be it's related o Tomcat's permissions, but I'm not sure which settings to change. I already inserted in catalina.policy:
grant codeBase "file:${catalina.home}/webapps/JavaBridge/WEB-INF/lib/-" {
    permission java.security.AllPermission;
 };
with no success, no matter if I start tomcat with or without "-security" parameter


Any clue?

Hi,

> Thanks for the response but this is just a simple class we
> want to run

you cannot run a class; not in PHP, not in Java, not even in Lisp. You can run a thread or a process, and you can invoke methods of a class, or you can invoke procedures. But you cannot invoke anything unless you have something to call into.


> from a php script that the users will use not us so really
> they will not
> be able to use the java call unless I scrap the java bridge
> all together
> and use php console abilities instead.

I am sorry, but I don't understand this sentence.


> I know how to set the heap space but I wanted to use the
> java bridge but

The PHP/Java Bridge isn't different. The nice feature of the "continuation-passing style" used by the bridge is that it uses standard (and therefore familiar) technology. Its only problem is that people don't understand it at all; they invent strange workarounds for problems which simply do not exist.


> it's starting to look like it doesn't have the capabilities we need it
> for in this instance.

Well, w/o a proper question or specification, the answer will remain "42" [1]. :)


Regards,
Jost Boekemeier
[1] From Douglas Adam's http://en.wikipedia.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy


      

Hi Jost

Thanks for the response but this is just a simple class we want to run
from a php script that the users will use not us so really they will not
be able to use the java call unless I scrap the java bridge all together
and use php console abilities instead.

I know how to set the heap space but I wanted to use the java bridge but
it's starting to look like it doesn't have the capabilities we need it
for in this instance.

Thanks again :)

Barry

-----Original Message-----
From: php...@li...
[mailto:php...@li...] 
Sent: 24 October 2008 15:22
To: php...@li...
Subject: Re: [Php-java-bridge-users] JVM Heap Space

Hi,

just set the -Xmx option.

> I do know how to do this on the command line but not with

Why don't you set the argument from the command line? Something like:

 java -Xmx512M -cp yourApp.jar your.App


After your app is running, you can communicate with it as usual.


Regards,
Jost Boekemeier




      

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_______________________________________________
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Hi,

just set the -Xmx option.

> I do know how to do this on the command line but not with

Why don't you set the argument from the command line? Something like:

 java -Xmx512M -cp yourApp.jar your.App


After your app is running, you can communicate with it as usual.


Regards,
Jost Boekemeier




      

Hi

 

I'm trying to increase the jvm heap space when my class is run but am
having problems trying to do this.  Please bare in mind Im very new to
Java and even newer to the whole php java bridge arena.

 

I have tried this how ever and wondered if somebody could help me at
all.

 

 

                                // Set the the jvm memory here

                                $system = new Java("java.lang.System");

                                $system -> setProperty("java",
"Xms512m");

                                $system -> setProperty("java",
"Xmx1024m");

 

I do know how to do this on the command line but not with in a java
class or a php script.

 

Thanks

 

Barry

Hi,

if the socket_* are available on all operating systems and in all PHP versions >= 5.1.4, I'd prefer this API over fwrite/fread. 

However, accoding to my tests on FreeBSD 4, Unix Domain Sockets communication is faster than TCP socket communication, even with ndelay switched off.


Regards,
Jost Boekemeier


--- php...@li... <php...@li...> schrieb am Fr, 24.10.2008:

> Von: php...@li... <php...@li...>
> Betreff: Re: [Php-java-bridge-users] java.so module purpose?
> An: php...@li...
> Datum: Freitag, 24. Oktober 2008, 8:19
> I've learned more. My examples were wrong. Updated
> examples at 
> http://vanstaveren.us/~trick/fbsd-nagle-localhost-errorcase/
> 
> My bug: I was not fread() / socket_read()'ing from the
> opened stream 
> after sending packets from the client. So communication was
> one-way. My 
> hacks on the send buffer size had fooled TCP into doing an
> extra round 
> trip to the server which coincidentally caused the delay as
> well. 
> Updated examples now actually send & recieve the same
> packets as your 
> original java test case and the bug reproduces exactly in
> both the 
> fsockopen and socket_ code. socket_set_option with
> TCP_NODELAY works, 
> for the sockets example only of course.
> 
> My speculations about buffers and fflush() not working were
> false, I was 
> clearly mistaken...
> 
> This means a few things:
> 1) I'm now a lot more confident that socket_set_option
> is a viable fix, 
> but I don't know if it's best to move PJB to use
> this API just for this 
> reason. What do you think? My patch was accepted; the
> constant 
> TCP_NODELAY is available as of PHP 5.2.7-RC2.
> 2) After quite a bit of research, the streams library 
> (fsockopen/fwrite/fread) apparently does not expose a
> method for me to 
> set socket options. I'll raise this on the PHP ML to
> make sure I've not 
> missed something obvious.
> 
> Might be viable to write a PHP function
> stream_socket_{get,set}_option 
> which does the same thing as socket_{get,set}_option if
> that's the best 
> route.
> 
> Cheers,
> Patrick
> 
> 
> php...@li... wrote:
> > Hi,
> >
> > it is true that PHP buffers data internally. But as
> soon as read() is called on the same stream, the outgoing
> data is flushed. The problem is really the "ack
> delay" caused by BSD's socket implementation.
> >
> > I suggest to discuss this on the BSD or PHP mailing
> list, as this affects all PHP applications running on BSD,
> not only the PHP/Java Bridge.
> >
> >
> > Regards,
> > Jost Boekemeier
> >
> >
> >
> >       
> >
> >
> -------------------------------------------------------------------------
> > This SF.Net email is sponsored by the Moblin Your Move
> Developer's challenge
> > Build the coolest Linux based applications with Moblin
> SDK & win great prizes
> > Grand prize is a trip for two to an Open Source event
> anywhere in the world
> >
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> > _______________________________________________
> > php-java-bridge-users mailing list
> > php...@li...
> >
> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users
> >   
> 
> -- 
> Patrick "Trick" van Staveren
> http://trick.vanstaveren.us
> 
> 
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move
> Developer's challenge
> Build the coolest Linux based applications with Moblin SDK
> & win great prizes
> Grand prize is a trip for two to an Open Source event
> anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> php-java-bridge-users mailing list
> php...@li...
> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users


      

I've learned more. My examples were wrong. Updated examples at 
http://vanstaveren.us/~trick/fbsd-nagle-localhost-errorcase/

My bug: I was not fread() / socket_read()'ing from the opened stream 
after sending packets from the client. So communication was one-way. My 
hacks on the send buffer size had fooled TCP into doing an extra round 
trip to the server which coincidentally caused the delay as well. 
Updated examples now actually send & recieve the same packets as your 
original java test case and the bug reproduces exactly in both the 
fsockopen and socket_ code. socket_set_option with TCP_NODELAY works, 
for the sockets example only of course.

My speculations about buffers and fflush() not working were false, I was 
clearly mistaken...

This means a few things:
1) I'm now a lot more confident that socket_set_option is a viable fix, 
but I don't know if it's best to move PJB to use this API just for this 
reason. What do you think? My patch was accepted; the constant 
TCP_NODELAY is available as of PHP 5.2.7-RC2.
2) After quite a bit of research, the streams library 
(fsockopen/fwrite/fread) apparently does not expose a method for me to 
set socket options. I'll raise this on the PHP ML to make sure I've not 
missed something obvious.

Might be viable to write a PHP function stream_socket_{get,set}_option 
which does the same thing as socket_{get,set}_option if that's the best 
route.

Cheers,
Patrick


php...@li... wrote:
> Hi,
>
> it is true that PHP buffers data internally. But as soon as read() is called on the same stream, the outgoing data is flushed. The problem is really the "ack delay" caused by BSD's socket implementation.
>
> I suggest to discuss this on the BSD or PHP mailing list, as this affects all PHP applications running on BSD, not only the PHP/Java Bridge.
>
>
> Regards,
> Jost Boekemeier
>
>
>
>       
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> php-java-bridge-users mailing list
> php...@li...
> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users
>   

-- 
Patrick "Trick" van Staveren
http://trick.vanstaveren.us