App Engine preview does not work in Eclipse

Question

Jetty opens up but it shows.

HTTP ERROR: 503

Problem accessing /. Reason:

SERVICE_UNAVAILABLE

From my Eclipse console

Apr 15, 2012 3:50:38 PM com.google.apphosting.utils.jetty.JettyLogger info INFO: Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger Apr 15, 2012 3:50:38 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml INFO: Successfully processed C:\Gowtham\eclipse\JS\war\WEB-INF/appengine-web.xml Apr 15, 2012 3:50:38 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml WARNING: appengine-web.xml does not contain a element. This will become required in a future release. See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information. You probably want to enable concurrent requests. Apr 15, 2012 3:50:38 PM com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml INFO: Successfully processed C:\Gowtham\eclipse\JS\war\WEB-INF/web.xml Apr 15, 2012 3:50:38 PM com.google.apphosting.utils.jetty.JettyLogger warn WARNING: Failed startup of context com.google.appengine.tools.development.DevAppEngineWebAppContext@18706f6{/,C:\Gowtham\eclipse\JS\war} java.lang.IllegalStateException: No such servlet: /script/thejs.js at org.mortbay.jetty.servlet.ServletHandler.updateMappings(ServletHandler.java:1026) at org.mortbay.jetty.servlet.ServletHandler.setServletMappings(ServletHandler.java:1110) at org.mortbay.jetty.webapp.WebXmlConfiguration.initialize(WebXmlConfiguration.java:306) at org.mortbay.jetty.webapp.WebXmlConfiguration.configure(WebXmlConfiguration.java:222) at org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp(WebXmlConfiguration.java:180) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1247) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:196) at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:239) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:146) at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:173) at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.(DevAppServerMain.java:120) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:96) Apr 15, 2012 3:50:38 PM com.google.appengine.tools.development.DevAppServerImpl start INFO: The server is running at http://localhost:8888/ Apr 15, 2012 3:50:38 PM com.google.appengine.tools.development.DevAppServerImpl start INFO: The admin console is running at http://localhost:8888/_ah/admin

Answer 1

It seems you have an error in web.xml file. Dev server thinks /script/thejs.js is a servlet.

How did you map your servlets in web.xml? Please show us the contents of this file.