This seems very similar to issue 4267. The issue is the GWT is setting a system property, overriding the default transformer factory. This causes the appengine server to get the wrong transformer factory. The exception you are getting is not exactly the same as the bug, but the circumstances are very similary. A workaround is, in your servlet, set the system property yourself to the java default. This should fix the server (although it might cause an issue in the GWT client, if you are using XML). Note that this is only an issue in the development server and not in production.
Here is the issue: http://code.google.com/p/google-web-toolkit/issues/detail?id=4267 Please go and check this issue so it get's some attention. Here is the line of code to set the property on the server to work around the GWT bug: // // When using GWT with appengine, we must override the // default TransformerFactory because GWT writes an invalid // default that causes an exception when trying to // render a XML Representation. This works around the bug. // System.setProperty("javax.xml.transform.TransformerFactory", "com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl"); On Jul 21, 5:42 am, Jan <jan.morl...@googlemail.com> wrote: > Hi, > > I would like to use an xsl transformation inside an HttpServlet. The > code is essentially the following: > > File xslfile = new File("test.xsl"); > TransformerFactory factory = TransformerFactory.newInstance(); > factory.setAttribute( "debug", true ); > Transformer transformer = factory.newTransformer(new > StreamSource( xslfile ) ); > > I already made sure that the xsl file is valid and I defined it as > resource-file inside appengine-web.xml > > If I now call the servlet the first time, the following error occurs: > > java.lang.ExceptionInInitializerError > at > com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java: > 109) > at > com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java: > 228) > at > com.sun.org.apache.bcel.internal.generic.ClassGen.getJavaClass(ClassGen.jav a: > 174) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet.translate(Style > sheet.java: > 735) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java: > 354) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java: > 429) > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTemp > lates(TransformerFactoryImpl.java: > 795) > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTran > sformer(TransformerFactoryImpl.java: > 617) > at com.axag.invoiceedit.server.<MY SERVLET>.doGet(<MY SERVLET>:240) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi > lter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans > actionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile > Filter.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(DevAppEn > gineWebAppContext.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.headerComplete(HttpConnection.java:923) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) > 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.security.AccessControlException: access denied > (java.io.FilePermission <PATH TO MY PROJECT'S SRC DIRECTORY> read) > at > java.security.AccessControlContext.checkPermission(AccessControlContext.jav a: > 323) > at > java.security.AccessController.checkPermission(AccessController.java: > 546) > at java.lang.SecurityManager.checkPermission(SecurityManager.java: > 532) > at com.google.appengine.tools.development.DevAppServerFactory > $CustomSecurityManager.checkPermission(DevAppServerFactory.java:166) > at java.lang.SecurityManager.checkRead(SecurityManager.java:871) > at java.io.File.exists(File.java:731) > at > com.sun.org.apache.bcel.internal.util.ClassPath.getPathComponents(ClassPath > .java: > 143) > at > com.sun.org.apache.bcel.internal.util.ClassPath.getClassPath(ClassPath.java : > 169) > at > com.sun.org.apache.bcel.internal.util.SyntheticRepository.<clinit>(Syntheti > cRepository.java: > 86) > ... 36 more > FEHLER: 'null' > SCHWER WIEGENDER FEHLER: 'Die Formatvorlage konnte nicht kompiliert > werden.' > javax.xml.transform.TransformerConfigurationException: Die > Formatvorlage konnte nicht kompiliert werden. > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTemp > lates(TransformerFactoryImpl.java: > 828) > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTran > sformer(TransformerFactoryImpl.java: > 617) > at com.axag.invoiceedit.server.<MY SERVLET>.doGet(<MY SERVLET>:240) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi > lter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans > actionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile > Filter.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(DevAppEn > gineWebAppContext.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.headerComplete(HttpConnection.java:923) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) > 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) > (Please excuse the german error messages) > > If I now refresh the browser the error message changes to: > > java.lang.NoClassDefFoundError: Could not initialize class > com.sun.org.apache.bcel.internal.util.SyntheticRepository > at > com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java: > 109) > at > com.sun.org.apache.bcel.internal.classfile.JavaClass.<init>(JavaClass.java: > 228) > at > com.sun.org.apache.bcel.internal.generic.ClassGen.getJavaClass(ClassGen.jav a: > 174) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet.translate(Style > sheet.java: > 735) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java: > 354) > at > com.sun.org.apache.xalan.internal.xsltc.compiler.XSLTC.compile(XSLTC.java: > 429) > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTemp > lates(TransformerFactoryImpl.java: > 795) > at > com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTran > sformer(TransformerFactoryImpl.java: > 617) > at com.axag.invoiceedit.server.PDFServlet.doGet(PDFServlet.java:240) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi > lter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans > actionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile > Filter.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(DevAppEn > gineWebAppContext.java: > 70) > at > ... > > read more » -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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