Friday, February 8, 2019

upgrade GWT project from 2.5 to 2.7


I'm working on upgrading our application from gwt 2.5 to gwt 2.7 in order to take advantage of the Super Dev mode. I installed new GWT plugin in Eclipse 4.4 in order to get gwt 2.7 library.
However, it has been a trying process for this version upgrade. After fixing many errors found in the upgrade process, finally, the application can be compiled by GWT compiler without any errors.

After executing command "Run as GWT Development Mode in Eclipse,  I can see the coderserver url as follows:

When I click on the application link, it gave me message as "This module hasn't been compiled yet.". Therefore, I searched online trying to find out solution. A post suggested that the application should be run on 
web server first before using code server. After executing the command Run as "GWT Development mode with Jetty",  I got following error message:

I've spent much time online trying to find out solution for this error, but I haven't got any luck yet. Hope you can help shed some lights on this issue. Thanks in advance!

Runing CodeServer with parameters: [-noprecompile, -port, 9876, -sourceLevel, 1.7, -bindAddress,, -launcherDir, C:\Users\jiny\gitNeon\aries\war, -logLevel, INFO,]
Super Dev Mode starting up
   workDir: C:\Users\jiny\AppData\Local\Temp\gwt-codeserver-507199880381658069.tmp
   Loading Java files in
   Ignored 9 units with compilation errors in first pass.
Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
Starting Jetty on port 8888
   [WARN] Failed startup of context c.g.g.d.s.j.WebAppContextWithReload{/,file:/C:/Users/jiny/gitNeon/aries/war/},C:\Users\jiny\gitNeon\aries\war
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(
at sun.reflect.DelegatingMethodAccessorImpl.invoke(
at java.lang.reflect.Method.invoke(
at org.eclipse.jetty.webapp.IterativeDescriptorProcessor.visit(
at org.eclipse.jetty.webapp.IterativeDescriptorProcessor.process(
at org.eclipse.jetty.webapp.MetaData.resolve(
at org.eclipse.jetty.webapp.WebAppContext.startContext(
at org.eclipse.jetty.server.handler.ContextHandler.doStart(
at org.eclipse.jetty.webapp.WebAppContext.doStart(
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(
at org.eclipse.jetty.server.handler.RequestLogHandler.doStart(
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(
at org.eclipse.jetty.server.Server.doStart(
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(
Caused by: java.lang.IllegalStateException: No such servlet: dropdownboxServlet
at org.eclipse.jetty.servlet.ServletHandler.updateMappings(
at org.eclipse.jetty.servlet.ServletHandler.setServletMappings(
at org.eclipse.jetty.servlet.ServletHandler.addServletMapping(
at org.eclipse.jetty.webapp.StandardDescriptorProcessor.addServletMapping(
at org.eclipse.jetty.webapp.StandardDescriptorProcessor.visitServletMapping(
... 23 more
   Module setup completed in 5687 ms

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