java.lang.InternalError: erroneous handlers when using itext.jar,poi.jar for converting MS word to PDF in weblogic8.1 : erroneous, handlers

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12.14.2007 at 12:36AM PST, ID: 23023116

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4.4

java.lang.InternalError: erroneous handlers when using itext.jar,poi.jar for converting MS word to PDF in weblogic8.1

Zones: Java Application Servers, BEA WebLogic Application Server

Tags: erroneous, handlers

I am getting "java.lang.InternalError: erroneous handlers" in weblogic console when i am converting MS word document to PDF using Itext.jar, POI.jar JAR files in weblogic8.1 server in our J2EE application.I am able to convert the PDF without any errors if i put the two jar files in SERVER / LIB of weblogic.But in our PRODUCTION environment we don't have access to change WEBLOGIC environment..So we need to do it somehow at APPLICATION Level.I am trying to put the JARS in class path in our project.properties file but no success.Please help me out.
Thanks

         
           
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             package com.uprr.app.cam.common.helpers;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
 
import org.apache.poi.hwpf.extractor.WordExtractor;
 
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;
 
public class WordReader
{
public static String getPdfDocument(String path)
{
	String pdfPath="G:/cam/bin/casdocs/";
	String pdfDocPath=null;
	try
	{
		InputStream is = new BufferedInputStream(new FileInputStream(path));
		WordExtractor wd = new WordExtractor(is);
		String text = wd.getText();
		System.out.println(text);
		Document document = new Document(); 
		PdfWriter.getInstance(document, new FileOutputStream(pdfPath+"viewDoc.pdf"));
		document.open();
		document.add(new Paragraph(text));
		document.close();
		pdfDocPath=pdfPath+"viewDoc.pdf";
		System.out.println("Pdf Doc Path"+pdfDocPath);
	}catch(FileNotFoundException e1)
	{
		System.out.println("File does not exist."); 
	}
	catch(IOException e2)
	{
		System.out.println("IO Exception");
	}catch (DocumentException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	return pdfDocPath;
}
 
}

           
         

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Question Stats

Zone: Software

Question Asked By: chsrinivas123

Solution Provided By: sompol_kiatkamolchai

Participating Experts: 1

Solution Grade: B

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12.16.2007 at 08:12PM PST, ID: 20482891

sompol_kiatkamolchai:

Hi,

After you get EAR or WAR file, please you check APP-INF/lib or WEB-INF/lib whether those two jar files is presented.

Sompol.

12.18.2007 at 06:10AM PST, ID: 20492127

chsrinivas123:

Hi Sompol,
I have tried putting the two jar files in APP_INF/lib and WEB_INF/lib but still i am getting the same "java.lang.InternalError: erroneous handlers" in my console.

12.18.2007 at 06:34AM PST, ID: 20492298

sompol_kiatkamolchai:

Hi,

The error message you're showing is very short.
Please you give me more error or exception stack trace message.
It's possible that you need to enable logging level in admin console to "info" level which the weblogic console will print more detail.

If you're not familiar with console, here is the place of setting.
your domain (left menu) --> your server (left menu) --> logging (right pane) --> .... somewhere you can find it there ....

Sompol

12.18.2007 at 07:44AM PST, ID: 20492929

chsrinivas123:

C:/work/wordpdf/wordtopdf/test1.doc
Hi,
I changed the logging level to INFO but didn't have any change in the console after restarting my server.I am sending below the stack trace.

<Dec 18, 2007 7:36:40 AM PST> <Error> <HTTP> <BEA-101017> <[ServletContext(id=2169370,name=cam_admin,context-path=/cam_admin)] Root cause of ServletException.
java.lang.InternalError: erroneous handlers
at com.uprr.app.cam.webapp.admin.action.AdminDocumentAssemblyAction.doProcesUpdateDocumentSectionContent(AdminDocumentAssemblyAction.java:1053)
at com.uprr.app.cam.webapp.admin.action.AdminDocumentAssemblyAction.doProcess(AdminDocumentAssemblyAction.java:125)

12.18.2007 at 07:55AM PST, ID: 20493025

sompol_kiatkamolchai:

Is there any other messages print out before or after this message?

12.18.2007 at 08:18AM PST, ID: 20493236

chsrinivas123:

sorry it doesn't give any other informational messages before and after.

12.18.2007 at 08:23AM PST, ID: 20493277

sompol_kiatkamolchai:

What about AdminDocumentAssemblyAction.java at line 1053?
Could you post this source?

12.19.2007 at 12:12AM PST, ID: 20498155

chsrinivas123:

1053 line corresponds to the call to
String pdfpath = WordReader.getPdfDocument(path);
I attached the code snippet for the method.

                       
                          
                             
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                                private void doProcesUpdateDocumentSectionContent(HttpServletRequest request, AdminGlobalForm form){
		if(request == null) {
			return;
		}
    	try{
    		DocumentSectionInfo documentInfo = new DocumentSectionInfo();
    		DocumentAssemblyMgrDelegate docDelegate = new DocumentAssemblyMgrDelegate();    		
    		DocumentSectionInfo docSctnInfo = this.getDocumentSctn(request);
    		String userid = this.getLoginUserId(request);    		
    		docSctnInfo.setLastChgUserID(userid);
    		String path = "C:/work/wordpdf/wordtopdf/test1.doc";
    		if(ActionConstants.VIEW_DOCUMENT_SECTION_CONTENT.equals(form.getCommand())){
    			
        		if(path !=null){
        			System.out.println(path);
        			String pdfpath = WordReader.getPdfDocument(path);
        			if(pdfpath!=null ){
        				request.setAttribute(FormConstants.PDF_LOCATION,pdfpath);
            			form.setForwardKey(ActionConstants.VIEW_DOCUMENT_SECTION_CONTENT);	
        			}        			
        		}
    		}else{    		
    		if(path !=null){
    			System.out.println(path);
    			request.setAttribute(FormConstants.PHYSICAL_LOCATION,path);
    			form.setForwardKey(ActionConstants.EDIT_DOCUMENT_SECTION_CONTENT);
    		}/*else if(documentSectionInfo.getValidUser()!=null)
    		{		
    				this.addInfo(request,new MessageInfo(documentSectionInfo.getValidUser()));    			
    				request.setAttribute(FormConstants.VALID_USER,documentSectionInfo.getValidUser());
    	    		form.setForwardKey(ActionConstants.EDIT_DOCUMENT_SECTION_CONTENT);	
    		}/*else
    			{
    				this.addInfo(request,new MessageInfo("Document doesnot exist"));    				
    	    		form.setForwardKey(ActionConstants.EDIT_DOCUMENT_SECTION_CONTENT);	
    			}*/    		
    	}
    	}catch(Exception e) {
    		form.setForwardKey(ActionConstants.GLOBAL_ERROR); 		
        }
    }

                             
                          

                    

Open in New Window

12.19.2007 at 12:20AM PST, ID: 20498169

sompol_kiatkamolchai:

Are you using Unix platform in produciton? If so, I think it didn't work because of fixed path in the source code here.

Maybe String pdfPath="G:/cam/bin/casdocs/"; or
String path = "C:/work/wordpdf/wordtopdf/test1.doc";

Please check.

Hope this help,
Sompol

12.19.2007 at 02:36AM PST, ID: 20498588

chsrinivas123:

I am doing it on my local weblogic server.I won't be sending it to production environment until i am able to do it on local environment.I tried changing the pdfpath from G: which is a network drive to C: which is local to my machine but with no effect.

12.19.2007 at 02:44AM PST, ID: 20498607

chsrinivas123:

i think its all with JAR files only because i am able to achive the MS Word to PDF conversion if i put both the jar files in my local weblogic server/LIB directory

12.19.2007 at 04:56AM PST, ID: 20499139

chsrinivas123:

Any more ideas Sompol to avoid this exception without having to put ithe JARS in server/LIB directory of weblogic

12.19.2007 at 06:59AM PST, ID: 20499938

sompol_kiatkamolchai:

How much access to production environment?
Can you change parameter like classpath in "Remote Start" menu?
If you can do so, you can do an adhoc solution by adding your jar there.

Hope this help,

I'm thinking about the root cause of problem but you can try above solution.

Sompol

12.19.2007 at 07:12AM PST, ID: 20500035

sompol_kiatkamolchai:

Hi,
I saw your comment "I have tried putting the two jar files in APP_INF/lib and WEB_INF/lib but still i am getting the same "java.lang.InternalError: erroneous handlers" in my console."

Is it APP_INF or APP-INF? It should be APP-INF.

Just a guess.
Sompol

12.19.2007 at 07:52AM PST, ID: 20500387

chsrinivas123:

Sorry it was typo kept it in APP-INF/LIB only.

12.19.2007 at 07:54AM PST, ID: 20500406

chsrinivas123:

And we don't have any access to production environment as some other applications will also be deployed along with our application on the same server.

12.19.2007 at 08:06AM PST, ID: 20500500

sompol_kiatkamolchai:

Ok. I think this is class loader problem. Try this.

After you get EAR file, Using jar tool to extract and remove Itext.jar and POI.jar in APP-INF/lib or WEB-INF/lib. Then pack it to EAR again.
Deploy and test your application the error should be like this "NoClassDefFoundException".
If not, and you get the same error like "java.lang.InternalError: erroneous handlers", that mean you have a duplicated library presented in a classpath in somewhere else. and it might be possible that it has a different version with yours.

Because server/lib is the first place that class loader will load class to memory, If you put your jar there, it's sure that your application will get that class. But if you put in APP-INF/lib or WEB-INF/lib, it's the last place that class loader will load.

If you check and sure that it has a duplicate, I have solution, how to force your application to use class from APP-INF first. (do it by modifying weblogic.xml)

Let's investigate first.

Sompol

Accepted Solution

12.19.2007 at 08:19AM PST, ID: 20500623

sompol_kiatkamolchai:

If those jar files in WEB-INF, try to modify weblogic.xml with this
<container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>

Your application will use lib in web-inf first.

Sompol

Assisted Solution

12.28.2007 at 02:06AM PST, ID: 20540752

chsrinivas123:

Finally found the solution for this.I added the jar paths in MANIFEST.MF file for that module which contains the Wordreader java class and it worked on Production environment too.

20080236-EE-VQP-29 / EE_QW_2_20070628