Can you use a an InputStream instead of a BufferedImage?
Tom
On Aug 1, 8:51 am, nacho <vela.igna...@gmail.com> wrote:
> If the lib is not supported by app engine you will need to deploy into
> another server, for example a Tomcat.
>
> On 30 jul, 19:24, RhinestoneMaster <guruko...@gmail.com> wrote:
>
> > We're trying to convert a pdf to an image using a software called
> > JPedal. This software is in an external jar. Our development
> > environment is in eclipse.
>
> > If we include the BufferedImage class in our code, we get this
> > compiler error:
> > java.awt.image.BufferedImage is not supported by Google App Engine's
> > Java runtime environment.
>
> > Also, after adding the JPedal jars to the eclipse library our code
> > looks like this:
> > String url="C:/2007NissanTowingGuide.pdf";
> > /**instance of PdfDecoder to convert PDF into image From JPedal*/
> > PdfDecoder decode_pdf = new PdfDecoder(true);
>
> > /**set mappings for non-embedded fonts to use*/
> > PdfDecoder.setFontReplacements(decode_pdf);
>
> > /**open the PDF file - can also be a URL or a byte array*/
> > try {
> > decode_pdf.openPdfFile(url);
>
> > /**get page 1 as an image*/
> > //page range if you want to extract all pages with a loop
> > //int start = 1, end = decode_pdf.getPageCount();
> > //BufferedImage img=decode_pdf.getPageAsImage(1);
>
> > /**close the pdf file*/
> > decode_pdf.closePdfFile();
>
> > //RenderedImage rendImage = img;
>
> > // Save as JPEG
> > File file = new File("yimage.jpg");
> > //ImageIO.write(rendImage, "jpg", file);
> > System.out.println("It worked");
>
> > } catch (PdfException e) {
> > e.printStackTrace();
> > }
> > and we get the following exception:
> > java.lang.NoClassDefFoundError: org/jpedal/exception/PdfException
> > at java.lang.Class.getDeclaredConstructors0(Native Method)
> > at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
> > at java.lang.Class.getConstructor0(Unknown Source)
> > at java.lang.Class.newInstance0(Unknown Source)
> > at java.lang.Class.newInstance(Unknown Source)
> > at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
> > at
> > org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:
> > 428)
> > at
> > org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:
> > 339)
> > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > 487)
> > at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1166)
> > at
> > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
> > 51)
> > at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> > at
> > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
> > 43)
> > at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> > at
> > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:
> > 122)
> > at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> > at
> > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> > 388)
> > at
> > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
> > 216)
> > at
> > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
> > 182)
> > at
> > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
> > 765)
> > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > 418)
> > at
> > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
> > 70)
> > at
> > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > 152)
> > at com.google.appengine.tools.development.JettyContainerService
> > $ApiProxyHandler.handle(JettyContainerService.java:349)
> > at
> > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > 152)
> > at org.mortbay.jetty.Server.handle(Server.java:326)
> > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> > 542)
> > at org.mortbay.jetty.HttpConnection
> > $RequestHandler.content(HttpConnection.java:938)
> > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> > at
> > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
> > 409)
> > at org.mortbay.thread.QueuedThreadPool
> > $PoolThread.run(QueuedThreadPool.java:582)
> > Caused by: java.lang.ClassNotFoundException:
> > org.jpedal.exception.PdfException
> > at java.net.URLClassLoader$1.run(Unknown Source)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(Unknown Source)
> > at java.lang.ClassLoader.loadClass(Unknown Source)
> > at
> > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:
> > 151)
> > at java.lang.ClassLoader.loadClass(Unknown Source)
> > ... 33 more
>
> > Is there any way to resolve these errors or is there gwt-compatible
> > way to convert PDFs to images?
>
> > Thanks a lot!
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