Re: Upgrading to GWT 2.8.1

Tried to remove <scope>provided</scope> - no result. 

Tried to switch to servlet-api version 3.0.1 - got an error: 

Module setup completed in 32400 ms

java.lang.NoClassDefFoundError: javax/servlet/http/HttpSessionIdListener

at org.eclipse.jetty.server.session.SessionHandler.<clinit>(SessionHandler.java:54)

at org.eclipse.jetty.servlet.ServletContextHandler.newSessionHandler(ServletContextHandler.java:241)

at org.eclipse.jetty.servlet.ServletContextHandler.getSessionHandler(ServletContextHandler.java:334)

at org.eclipse.jetty.servlet.ServletContextHandler.relinkHandlers(ServletContextHandler.java:180)

at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:157)

at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:117)

at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:105)

at com.google.gwt.dev.codeserver.WebServer.start(WebServer.java:129)

at com.google.gwt.dev.codeserver.CodeServer.start(CodeServer.java:162)

at com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:104)

at com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:55)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.google.gwt.dev.shell.SuperDevListener.runCodeServer(SuperDevListener.java:112)

at com.google.gwt.dev.shell.SuperDevListener.start(SuperDevListener.java:91)

at com.google.gwt.dev.DevMode.ensureCodeServerListener(DevMode.java:666)

at com.google.gwt.dev.DevModeBase.doStartup(DevModeBase.java:810)

at com.google.gwt.dev.DevMode.doStartup(DevMode.java:551)

at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:913)

at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:706)

at com.google.gwt.dev.DevMode.main(DevMode.java:432)

Caused by: java.lang.ClassNotFoundException: javax.servlet.http.HttpSessionIdListener

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 23 more

Disconnected from the target VM, address: '127.0.0.1:57494', transport: 'socket'

I am wondering if compiling logs should contain: 

Jul 18, 2017 3:43:34 PM com.google.apphosting.utils.jetty.JettyLogger info

INFO: Started SelectChannelConnector@0.0.0.0:52528

Jul 18, 2017 3:43:34 PM com.google.appengine.tools.development.AbstractBackendServers$ServerWrapper startup

INFO: server: 0.operation is running on port 52528

Jul 18, 2017 3:43:36 PM com.google.apphosting.utils.jetty.JettyLogger info

INFO: jetty-6.1.x

Does it mean that it still use jetty 6 version and not 9? 

On Monday, July 17, 2017 at 2:39:09 PM UTC-5, Renat Kabirov wrote:

I have a problem upgrading to GWT 2.8.1 from 2.7.0. 

Changed version of gwt in pom. Checked dependencies, updated them. Changed servlet-api version to 3.1.0. 

When I try to run application code server has an error: 

HTTP ERROR: 500

Problem accessing /. Reason:

    java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.getHeader(Ljava/lang/String;)Ljava/lang/String;

---

Powered by Jetty://

From what I got, I understand that Code server trying to use wrong version of servlet-api. I see in my classpath servlet-api version 2.3, but I removed all other servlet-api versions in every dependency has it. 

I would glad to look in your recommendations. 

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