- This topic has 32 replies, 2 voices, and was last updated Aug 11, 2012
12:17:48 by.
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Posts
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#28959
Thank you for the input!
So, most probably, it hangs in the following code:
[language=java:1376b11o]private boolean hasCanvasInterpreter() {
Class c;
try {
try {
c = Class.forName(PD4Constants.PD4ML_EXTERNAL_CANVAS_HANDLER);
} catch (ClassNotFoundException e) {
try {
c = Thread.currentThread().getContextClassLoader().loadClass(PD4Constants.PD4ML_EXTERNAL_CANVAS_HANDLER);
} catch (ClassNotFoundException e1) {
c = ResourceCache.class.getClassLoader().loadClass(PD4Constants.PD4ML_EXTERNAL_CANVAS_HANDLER);
}
}
} catch (Exception e) {
return false;
}if ( c != null ) {
return true;
}return false;
}[/language:1376b11o]I see nothing dangerous in it. It looks like it hits some class loader implementation specific issues.
#28962I’ve just sent to you a link to an updated version. Please check if our workaround helps.
#28964Next week we plan to analyze the problem in depth and find a solution
#28966In the meantime we tried a variety of environments. Here is my current state:
[language=xml:1c85moiu]igors-imac:bin igor$ sudo ./daemon.sh version
Password:
Still running according to PID file /Library/Tomcat//logs/catalina-daemon.pid, PID is 5901
jsvc (Apache Commons Daemon) 1.0.10
Copyright (c) 1999-2011 Apache Software Foundation.
java version “1.6.0_33”
Java(TM) SE Runtime Environment (build 1.6.0_33-b03-424-11M3720)
Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03-424, mixed mode)
commons daemon version “1.0.10”
commons daemon process (id: 5914, parent: 5913)
Server version: Apache Tomcat/7.0.27
Server built: Mar 31 2012 03:43:36
Server number: 7.0.27.0
OS Name: Mac OS X
OS Version: 10.7.4
Architecture: x86_64
JVM Version: 1.6.0_33-b03-424-11M3720
JVM Vendor: Apple Inc.[/language:1c85moiu]The servlet code I used for tests:
[language=java:1c85moiu]import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URL;import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.zefer.pd4ml.PD4Constants;
import org.zefer.pd4ml.PD4ML;public class PD4MLServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
URL url = new URL(“http://pd4ml.com/xindex.htm”);
PD4ML html = new PD4ML();
html.setPageSize( PD4Constants.A4 );
html.setPageInsets( new java.awt.Insets(20, 50, 10, 10) );
html.setHtmlWidth( 850 );ByteArrayOutputStream baos = new ByteArrayOutputStream();
html.render( url, baos );byte[] result = baos.toByteArray();
response.setContentType(“application/pdf”);
response.setHeader(“Content-disposition”,”inline; filename=test.pdf”);
response.setHeader(“Pragma”, “cache”);
response.setHeader(“Expires”, “0”);
response.setHeader(“Cache-control”, “private”);response.setContentLength(result.length);
ServletOutputStream sos = response.getOutputStream();
sos.write( result );
}
}[/language:1c85moiu]Everything works just fine. So it should be an issue of an interfere of PD4ML with some other libs on your side. Please try the servlet – it the conversion fails, try to exclude libs one-by-one from your project until it started to work. It would be great if you share the results with us.
#28968The only suspicious classes may interfere with Tomcat belong to org.w3c package in ss_css2.jar. Try to temporarily remove ss_css2.jar. Does it block or throw an exception in the case?
Another point is that PD4ML uses AWT classes (for example, fonts). In server-side scenarios it requires headless mode of JVM. Make sure Tomcat runs with -Djava.awt.headless=true JVM parameter.
#28970Try to unpack and temporarily to use the attached ss_css2.jar
Please note – it is an inconsistent version of the lib – for troubleshooting purposes only.
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