I solve my jsp compilation issue by using below steps.
1) Download and install "eclipse-java-helios-SR1-win32.zip".
2) Install plugins from "http://dl.google.com/eclipse/plugin/3.6";.
3) Download and install "java_ee_sdk-6u1-jdk-windows.exe".
4) Create a new and empty app using same project name and package as
my old app.
5) Carefully copy all files in src and war from my old app into the
new app.
6) Import all external libs from my old app into the new app.
7) Set Properties-Google-App Engine-ORM to server files which need
enhancement.
8) Debug and no more "Unable to compile class for JSP".
On Dec 4, 11:47 am, Jerome <jerome.mou...@gmail.com> wrote:
> Sorry, no solution but a very similar issue with Eclipse Helios SR 1:
>
> org.apache.jasper.JasperException: Unable to compile class for JSP:
>
> An error occurred at line: 9 in the generated java file
> org.apache.jasper.runtime.HttpJspBase cannot be resolved to a type
>
> An error occurred at line: 10 in the generated java file
> org.apache.jasper.runtime.JspSourceDependent cannot be resolved to a
> type
>
> An error occurred at line: 12 in the generated java file
> JspFactory cannot be resolved to a type
>
> An error occurred at line: 12 in the generated java file
> JspFactory cannot be resolved
>
> An error occurred at line: 23 in the generated java file
> javax.el.ExpressionFactory cannot be resolved to a type
>
> An error occurred at line: 24 in the generated java file
> org.apache.AnnotationProcessor cannot be resolved to a type
>
> An error occurred at line: 31 in the generated java file
> _el_expressionfactory cannot be resolved
>
> An error occurred at line: 31 in the generated java file
> _jspxFactory cannot be resolved
>
> An error occurred at line: 31 in the generated java file
> The method getServletConfig() is undefined for the type plans_jsp
>
> An error occurred at line: 32 in the generated java file
> _jsp_annotationprocessor cannot be resolved
>
> An error occurred at line: 32 in the generated java file
> org.apache.AnnotationProcessor cannot be resolved to a type
>
> An error occurred at line: 32 in the generated java file
> The method getServletConfig() is undefined for the type plans_jsp
>
> An error occurred at line: 32 in the generated java file
> org.apache.AnnotationProcessor cannot be resolved to a type
>
> An error occurred at line: 38 in the generated java file
> HttpServletRequest cannot be resolved to a type
>
> An error occurred at line: 38 in the generated java file
> HttpServletResponse cannot be resolved to a type
>
> An error occurred at line: 39 in the generated java file
> ServletException cannot be resolved to a type
>
> An error occurred at line: 41 in the generated java file
> PageContext cannot be resolved to a type
>
> An error occurred at line: 42 in the generated java file
> HttpSession cannot be resolved to a type
>
> An error occurred at line: 43 in the generated java file
> ServletContext cannot be resolved to a type
>
> An error occurred at line: 44 in the generated java file
> ServletConfig cannot be resolved to a type
>
> An error occurred at line: 45 in the generated java file
> JspWriter cannot be resolved to a type
>
> An error occurred at line: 47 in the generated java file
> JspWriter cannot be resolved to a type
>
> An error occurred at line: 48 in the generated java file
> PageContext cannot be resolved to a type
>
> An error occurred at line: 53 in the generated java file
> _jspxFactory cannot be resolved
>
> An error occurred at line: 1,315 in the generated java file
> SkipPageException cannot be resolved to a type
>
> An error occurred at line: 1,322 in the generated java file
> _jspxFactory cannot be resolved
>
> Stacktrace:
> at
> org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:
> 92)
> at
> org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:
> 330)
> at
> org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:
> 439)
> at org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
> at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
> at org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
> at
> org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:
> 592)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:
> 317)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:
> 313)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
> at com.google.appengine.tools.development.PrivilegedJspServlet.access
> $101(PrivilegedJspServlet.java:23)
> at com.google.appengine.tools.development.PrivilegedJspServlet
> $2.run(PrivilegedJspServlet.java:59)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> com.google.appengine.tools.development.PrivilegedJspServlet.service(PrivilegedJspServlet.java:
> 57)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 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(ServeBlobFilter.java:
> 58)
> 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.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)
>
> On Dec 3, 6:30 pm, GoSharp Lite <gosharpl...@gmail.com> wrote:
>
> > I have just upgraded Eclipse Galileo with AppEngine version 1.4.0.
> > There seems to be a mismatch of Tomcat versions between pre-
> > compilation and execution.
>
> > Does anyone have a solution with jsp compilation issue?
>
> > Local server shows below logs with SDK 1.4.0 -
> > HTTP ERROR 500
>
> > Problem accessing /. Reason:
> > Unable to compile class for JSP:
>
> > An error occurred at line: -1 in the generated java file
> > [javac] D:\Profiles\LOCALS~1\Temp\Jetty_0_0_0_0_8888_war____masbuh
> > \jsp\org\apache\jsp\GoChildWeb_jsp.java:8:
> > org.apache.jsp.GoChildWeb_jsp is not abstract and does not override
> > abstract method getDependants() in
> > org.apache.jasper.runtime.JspSourceDependent
> > [javac] public final class GoChildWeb_jsp extends
> > org.apache.jasper.runtime.HttpJspBase
> > [javac] ^
>
> > An error occurred at line: -1 in the generated java file
> > [javac] D:\Profiles\LOCALS~1\Temp\Jetty_0_0_0_0_8888_war____masbuh
> > \jsp\org\apache\jsp\GoChildWeb_jsp.java:18: getDependants() in
> > org.apache.jsp.GoChildWeb_jsp cannot implement getDependants() in
> > org.apache.jasper.runtime.JspSourceDependent; attempting to use
> > incompatible return type
> > [javac] found : java.lang.Object
> > [javac] required: java.util.List
> > [javac] public Object getDependants() {
> > [javac] ^
>
> > An error occurred at line: -1 in the generated java file
> > [javac] D:\Profiles\LOCALS~1\Temp\Jetty_0_0_0_0_8888_war____masbuh
> > \jsp\org\apache\jsp\GoChildWeb_jsp.java:23: cannot find symbol
> > [javac] symbol : method
> > getJspApplicationContext(javax.servlet.ServletContext)
> > [javac] location: class javax.servlet.jsp.JspFactory
> > [javac] _el_expressionfactory =
> > _jspxFactory.getJspApplicationContext(getServletConfig().getServletContext(
> > )).getExpressionFactory();
> > [javac] ^
> > [javac] 3 errors
>
> > On Dec 4, 6:30 am, Alex Humesky <ahume...@google.com> wrote:
>
> > > GPE's AppEngine SDK bundle version 1.4.0 is now up. Sorry for the
> > > delay.
>
> > > On Dec 3, 11:02 am, Don Schwarz <schwa...@google.com> wrote:
>
> > > > My apologies. We plan to have it up before the end of the day today.
>
> > > > On Fri, Dec 3, 2010 at 9:26 AM, Royce Fullerton <roy...@gmail.com>
> > > > wrote:
> > > > > When will the Eclipse plugin update site be updated?
>
> > > > > The plugin is now version 1.4, but the SDK is still version 1.3.8.
>
> > > > > On Dec 3, 2:59 am, "Ikai Lan (Google)" <ikai.l+gro...@google.com>
> > > > > wrote:
> > > > >> Dance dance robot is a bit older and the API may have changed
> > > > >> slightly (not
> > > > >> sure, I have not done a visual check), but it's a good example of
> > > > >> how to use
> > > > >> JSNI with the Channel API:
>
> > > > >>http://code.google.com/p/dance-dance-robot/
>
> > > > >> --
> > > > >> Ikai Lan
> > > > >> Developer Programs Engineer, Google App Engine
> > > > >> Blogger:http://googleappengine.blogspot.com
> > > > >> Reddit:http://www.reddit.com/r/appengine
> > > > >> Twitter:http://twitter.com/app_engine
>
> > > > >> On Thu, Dec 2, 2010 at 3:50 PM, emerix <rafa...@gmail.com> wrote:
> > > > >> > Great release! Are there some libraries/docs for GWT and the
> > > > >> > Channel
> > > > >> > API ?
>
> > > > >> > On Dec 2, 10:17 pm, "Ikai Lan (Google)"
> > > > >> > <ikai.l+gro...@google.com<ikai.l%2bgro...@google.com>
>
> > > > >> > wrote:
> > > > >> > > They're still rolling out:
>
> ...
>
> read more »
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