Java Agent Error: "HTTP JVM: java.lang.UnsatisfiedLinkError: AspriseOCR (Library is already loaded in another ClassLoader)"

HCL Domino Domino Forum
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Hi,

I’m evaluating a OCR software with a Domino 8.01 on a Windows 2003 server. It’s called Asprise OCR for Java and consist of a some .jar files (that I include in my Java agent) and some .dll (that I put inside the “Windows\System32” folder of the server)

Here’s the URL of the OCR software:

Here’s my code:

import lotus.domino.*;

import com.asprise.util.ocr.OCR;

import com.asprise.util.pdf.PDFReader;

import java.io.File;

import java.awt.image.BufferedImage;

public class JavaAgent extends AgentBase {

public void NotesMain() {



	try {

		// Extract text from a PDF (image)

		OCR ocr = new OCR();

		PDFReader reader = new PDFReader(new File("c:\\input_img.pdf"));

		reader.open();

		int pages = reader.getNumberOfPages();

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

			BufferedImage image = reader.getPageAsImage(i);

			String text = ocr.recognizeCharacters(image);

			System.out.println(text);

		}

		reader.close();

		ocr=null;



	} catch(Exception e) {

		e.printStackTrace();

	}

}

}

When I run it the first time, it works as expected and display the text from the PDF (once OCRed).

When I run it a second time, I receive the following error:

05/12/2009 11:04:00 AM HTTP JVM: Exception in thread “AgentThread: JavaAgent”

05/12/2009 11:04:00 AM HTTP JVM: java.lang.UnsatisfiedLinkError: AspriseOCR (Library is already loaded in another ClassLoader)

05/12/2009 11:04:00 AM HTTP JVM: at java.lang.ClassLoader.loadLibraryWithPath(ClassLoader.java:979)

05/12/2009 11:04:00 AM HTTP JVM: at java.lang.ClassLoader.loadLibraryWithClassLoader(ClassLoader.java:948)

05/12/2009 11:04:00 AM HTTP JVM: at java.lang.System.loadLibrary(System.java:453)

05/12/2009 11:04:00 AM HTTP JVM: at com.asprise.util.ocr.OCR.loadLibrary(OCR.java:247)

05/12/2009 11:04:00 AM HTTP JVM: at com.asprise.util.ocr.OCR.(OCR.java:56)

05/12/2009 11:04:00 AM HTTP JVM: at JavaAgent.NotesMain(JavaAgent.java:13)

05/12/2009 11:04:00 AM HTTP JVM: at lotus.domino.AgentBase.runNotes(Unknown Source)

05/12/2009 11:04:00 AM HTTP JVM: at lotus.domino.NotesThread.run(Unknown Source)

I need to restart the server to make it works again. But then, it will work again the first time the agent is called.

I have the same problem if I run this agent locally on my workstation.

However, when I run that same code locally on my workstation using Eclipse, It always work… I never receive that error.

Can someone help me on this?

Thanks!