Andrea, Can you explain your set up? How are you running jetty? From a standard jetty distribution, or from embedded, or from the jetty-maven-plugin?
You should have these jars on the classpath: javax.el-3.0.0.jar javax.servlet.jsp-2.3.2.jar javax.servlet.jsp-api-2.3.1.jar jetty-jsp-jdt-2.3.3.jar (*** this one contains the jsp class that allows for compilation using jdt!) org.eclipse.jdt.core-3.8.2.v20130121.jar jstl is optional - if you don't use it then you shouldn't need it on the classpath: javax.servlet.jsp.jstl-1.2.0.v201105211821.jar org.apache.taglibs.standard.glassfish-1.2.0.v201112081803.jar Your stack trace looks like it is falling back to using the ant compiler, which is the last resort after trying the in-jvm compiler, and the jdt compiler. So it looks like either the jetty-jsp-jdt-2.3.3.jar or org.eclipse.jdt.core-3.8.2.v20130121.jar is missing from the classpath. Jan On 13 February 2014 19:56, Andrea Cappelli <[email protected]> wrote: > Hi list, > I have a webapp which needs to compile some jsp > > I tried the suggestions in > > http://www.eclipse.org/jetty/documentation/current/configuring-jsp.html#compiling-jsps > > to instruct jetty to use it's internal compiler, but I still get > > org.apache.jasper.JasperException: Unable to compile class for JSP > at > org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97) > at > org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346) > at > org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:472) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) > at > org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) > at > org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:696) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:526) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:586) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1110) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:453) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1044) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:261) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:101) > at > it.mareinformatica.jamboBiglie.server.core.StampaServlet.service(StampaServlet.java:92) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) > at > org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:696) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1568) > at > org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:164) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1539) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:524) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:568) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1110) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:453) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1044) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) > at > org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:199) > at > org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) > at org.eclipse.jetty.server.Server.handle(Server.java:459) > at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:280) > at > org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229) > at > org.eclipse.jetty.io.AbstractConnection$1.run(AbstractConnection.java:505) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536) > at java.lang.Thread.run(Thread.java:744) > Caused by: Unable to find a javac compiler; > com.sun.tools.javac.Main is not on the classpath. > Perhaps JAVA_HOME does not point to the JDK > at > org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:105) > at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:924) > at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:757) > at > org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382) > > > Googling I found other "solution" proposed, from explicit setting JAVA_HOME > to adding the directory which contains tools.jar to classpath, nothing > worked for me > > The only thing that worked was to copy the file tools.jar from > $JDK/lib/tools.jar to $JDK/jre/lib/ext/tools.jar > > I'm using > > java version "1.7.0_45" > Java(TM) SE Runtime Environment (build 1.7.0_45-b18) > Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode) > > and jetty 9.1.0 > > Any hint appreciated > > -- > Andrea Cappelli > > _______________________________________________ > jetty-users mailing list > [email protected] > https://dev.eclipse.org/mailman/listinfo/jetty-users -- Jan Bartel <[email protected]> www.webtide.com 'Expert Jetty/CometD developer,production,operations advice' _______________________________________________ jetty-users mailing list [email protected] https://dev.eclipse.org/mailman/listinfo/jetty-users
