Thread: [Php-java-bridge-users] Shared Object (*.so) registration

Hello,

i'm running into a little problem when i want to use a *.jar which requires
a shared object. i registered the object and when i list all the registred
objects with ldconfig it's there but when i run my code i get this:

CreateInstance failed: new com.asprise.util.ocr.OCR. Cause:
java.lang.UnsatisfiedLinkError: Native library AspriseOCR could not be found
in java_require() path.

anybody who knows how to do the trick?

-- 
Gilbert Groenendijk

Hi,

[loading impure java libraries]

> anybody who knows how to do the trick?

The native part should go into a VM specific library
dir and the Java part into java.ext.dirs.

<?php
echo java("java.lang.System")->getProperties();
?>

should show the location of both directories.


Regards,
Jost Boekemeier




      __________________________________  Die etwas anderen Infos rund um das Thema Reisen. BE A BETTER WELTENBUMMLER!  www.yahoo.de/clever

Hi Jost,

Thank you for your anwser.I tried your suggestion and it didn't gave me that
error but i still don't get it to work.
It just says:
Cause: java.lang.ClassNotFoundException: Unresolved external reference:
java.lang.NoClassDefFoundError.


This is what i did:

moved libAspriseOCR.so to /usr/lib/jvm/java-1_4_2-sun-1.4.2.13
/jre/lib/i386/client/libAspriseOCR.so
moved aspriseOCR.jar to /usr/lib/jvm/java-1_4_2-sun-1.4.2.13
/jre/lib/ext/aspriseOCR.jar

restarted tomcat and apache

See my code below, Java code is directly copied from the manufactures
website:

/*

The original java code:


import com.asprise.util.pdf.PDFReader;
import com.asprise.util.ocr.OCR;

PDFReader reader = new PDFReader(new File("my.pdf"));
reader.open(); // open the file.
int pages = reader.getNumberOfPages();

for(int i=0; i < pages; i++) {
   BufferedImage img = reader.getPageAsImage(i);

   // recognizes both characters and barcodes
   String text = new OCR().recognizeAll(image);
   System.out.println("Page " + i + ": " + text);
}

reader.close(); // finally, close the file.
*/


// My php5 Code

$aJarFiles[] = "./external/lucene-demos-2.0.0.jar";
$aJarFiles[] = "./external/lucene-core-2.0.0.jar";
$aJarFiles[] = "./external/junit.jar";
$aJarFiles[] = "./external/checkstyle-all-4.2.jar";
$aJarFiles[] = "./external/bcprov-jdk14-132.jar";
$aJarFiles[] = "./external/bcmail-jdk14-132.jar";
$aJarFiles[] = "./external/ant.jar";
$aJarFiles[] = "./external/FontBox-0.1.0-dev.jar";

$aJarFiles[] = "./AspriseJavaPDF.jar";
$aJarFiles[] = "./aspriseOCR.jar";

java_require(implode(";",$aJarFiles));

$file = new Java('java.io.File',"./changes.pdf");
$reader = new Java('com.asprise.util.pdf.PDFReader',$file);
$reader->open();
$pages = $reader->getNumberOfPages();


for($i=0; $i < $pages; $i++) {

   $img = $reader->getPageAsImage($i);
   $ocr = new Java('com.asprise.util.ocr.OCR');
   $text = $ocr->recognizeAll($img);

   print $text;
}


Any idea what's wrong with my setup? i Put everything in a zip if you would
like to take a look:
http://infolook.mpublisher.com/ocr.zip


On 7/14/07, php...@li... <
php...@li...> wrote:
>
> Hi,
>
> [loading impure java libraries]
>
> > anybody who knows how to do the trick?
>
> The native part should go into a VM specific library
> dir and the Java part into java.ext.dirs.
>
> <?php
> echo java("java.lang.System")->getProperties();
> ?>
>
> should show the location of both directories.
>
>
> Regards,
> Jost Boekemeier
>
>
>
>
>      __________________________________  Die etwas anderen Infos rund um
> das Thema Reisen. BE A BETTER WELTENBUMMLER!  www.yahoo.de/clever
>
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-- 
Gilbert Groenendijk

Hi,

> It just says:
> Cause: java.lang.ClassNotFoundException: Unresolved external reference:
> java.lang.NoClassDefFoundError.

then you're out of luck. Java doesn't have a proper module system, the above error means that you 
have compiled against a different API and than what is available now.

When you get the above exception without any indication which class or package is missing, you 
can't proceed. The only way to solve the above Java error is to step back and read the 
documentation of the Java package, which should list the external package dependencies and their
versions.


Regards,
Jost Boekemeier



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