Comments on: Installing the PHP Java Bridge in Ubuntu (Gutsy Gibbon)

By: Hakan

Hakan — Tue, 16 Dec 2008 20:13:17 +0000

@dbigang
That did the trick for me. Thanks!

By: dbigand

dbigand — Sun, 05 Oct 2008 17:01:04 +0000

Hello,

Just and require_once(‘Java.inc’); in you’re script.

You’ll find this file in the source directory of php_java_bridge.

regards

david

By: vinu

vinu — Tue, 19 Aug 2008 15:51:47 +0000

Slei,
It looks like PHP cannot find Java. Since you’ve used custom compiled versions of PHP, the installer may not have updated your PHP.ini.
The following link may be useful for you:
http://www.raditha.com/php/java.php

By: Slei

Slei — Wed, 13 Aug 2008 19:18:19 +0000

Hi,
I installed the php-java-bridge , but still having this error:
Fatal error: Class ‘Java’ not found

I didn’t install PHP5 from .deb package, I compiled the source to install PHP5 and Apache2.

What I have to do? do I have to recompile PHP5 with Java, but when I run ./configure –help there is no –with-java option in PHP5….

Thanks for your help.

By: vinu

vinu — Mon, 14 Jul 2008 07:38:10 +0000

Here’s another Article which shows how to bridge PHP an Java in Windows using Apache Tomcat:
http://www.hiveminds.co.uk/node/3814

By: Charles Shaffer

Charles Shaffer — Tue, 10 Jun 2008 20:13:49 +0000

vinu,

Well I think it is working now. I had to put a reference in the java_require to a class that is imported in the class I developed.

java_require(“/usr/lib/jclass/U2web.jar;/usr/lib/jclass/asjava.zip”);

Thanks for all of your help.

By: Charles Shaffer

Charles Shaffer — Tue, 10 Jun 2008 18:33:20 +0000

vinu,

Sorry for all of the questions.

After changing the java_require to
java_require(“/usr/lib/jclass/”);

get this error
CreateInstance failed: new com.ntnbower.t4mutil.U2. Cause: java.lang.ClassNotFoundException: Could not find com.ntnbower.t4mutil.U2 in java_require() path. Please check the path and the SEL and File permissions

The class is in a jar file called U2web.jar jar tvf U2web.jar
0 Tue Jun 10 13:10:58 CDT 2008 META-INF/
71 Tue Jun 10 13:10:58 CDT 2008 META-INF/MANIFEST.MF
1931 Tue Jun 10 13:10:22 CDT 2008 com/ntnbower/t4mutil/U2.class

Permissions on the jclas directory are 755

Don’t know what SEL is referring to.

PHP code
IsValidPartNumber($partnumber);
print “Hello”;
?>

Just trying to get past the instantiation at this point.

By: vinu

vinu — Tue, 10 Jun 2008 17:58:29 +0000

Hi Charles,
Change your Java require line to :
java_require(’/usr/lib/jclass/’);
It just needs the path to the class file. The jar file should not be specified in the the java_require line.

By: Charles Shaffer

Charles Shaffer — Tue, 10 Jun 2008 14:37:25 +0000

Hello vinu,

I got side tracked for a while, but I’m back on the PHP-Java Bridge now. I have created a jar file called U2web.jar and put it in /usr/lib/jclass/ directory. /usr/lib/jclass/U2web.jar is in the CLASSPATH. In a standard java program I import import com.ntnbower.t4mutil.*; and this works fine.

In the php code I include
java_require(‘/usr/lib/jclass/U2web.jar’); When I create the new object I use
$U2 = new Java(‘com.ntnbower.t4mutil.U2′);

It fails on test and I get this error
Unresolved external reference: java.lang.NoClassDefFoundError: asjava/uniobjects/UniSessionException. — Unable to call constructor, see the README section “Java platform issues” for details

Do you know where I could find the README this refers to?

By: vinu

vinu — Thu, 05 Jun 2008 19:13:53 +0000

Ok. Here’s my guess Charles – This line may be the cause:
$result = $U2->IsValidPartNumber($partnumber);
If the parameter is defined as integer in Java, PHP is unable to send $partnumber to Java, since it’s taken as a string.
Try:
$result = $U2->IsValidPartNumber($partnumber+0);
Which will implicitly change the datatype to integer. Leave the java_require with the double quotes:
java_require(�?/var/www/cs_dev/com/ntnbower/t4mutil/�?);

“This bridge does not convert data dynamically like the core PHP engine does. You must do type conversion in your PHP code.”
More information on this over at:
http://dev2dev.bea.com/pub/a/2007/02/php-java-bridge.html

By: Charles Shaffer

Charles Shaffer — Wed, 04 Jun 2008 21:05:33 +0000

More progress sort of.

I discovered that by changing the quotes in the require_java statement
java_require(‘/var/www/cs_dev/com/ntnbower/t4mutil/U2.class’);

I got rid of the parser errors.

At run time I got
Fatal error: Call to undefined function java_require() in /var/www/cs_dev/validate_part.php on line 9

Do I need to set a path to somewhere?

By: Charles Shaffer

Charles Shaffer — Wed, 04 Jun 2008 19:18:16 +0000

Vinu,

Progress. Sort of. When I add the require_java() statement the java object seems to be created OK, but there is an error further on.

With this code:
java_require(“/var/www/cs_dev/com/ntnbower/t4mutil/U2.class�?);
$U2 = new java(‘U2′);
$result = $U2->IsValidPartNumber($partnumber);
if($result) print “Found”; (line 13)
else print “Not Found”;

This error:
Parse error: syntax error, unexpected T_STRING in /var/www/cs_dev/validate_part.php on line 13

With the require_java line commented out the error occurs when creating the new U2 object, which makes sense.

Do you see why the require_java call is causing the T_STRING error?

Thanks.

By: Charles Shaffer

Charles Shaffer — Wed, 04 Jun 2008 16:11:58 +0000

By the way, if it matters we are using Feisty Fawn.

By: vinu

vinu — Wed, 04 Jun 2008 16:06:21 +0000

Charles,
I missed out one more point to ask. Did you set the path to the class files in your php code ? You can do that by using:

java_require(“/path/to/your/classfiles/”);
$U2 = new java(’com.ntnbower.t4mutil’);
…………..
…………..

By: Charles Shaffer

Charles Shaffer — Wed, 04 Jun 2008 15:23:00 +0000

OK. Downloading the self-extracting java was a mistake. Our Linux guy helped me get rid of the self-extracting version of Java and we reinstalled the apt-get versions of java and the java bridge. PHP is aware of java and the status is running. It still doesn’t find the java class though. I just have a feeling this is an environment issue (PATH, CLASSPATH, ?) but I don’t know what the problem is. Do you need to import java somehow?

By: Charles Shaffer

Charles Shaffer — Wed, 04 Jun 2008 13:50:33 +0000

vinu,

Yes. We are using the PHP that came with the Ubuntu install. PHPINFO says Java Support is enabled and the status is running. But java_home says no value. I wonder if the problem is with the java install. The error says the class Java is not found. I downloaded the latest Java from Sun as a self-extracting file. Was that unnecessary?