guice injecting remote servlet. Error 404 not found

Mark Diesta

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Mar 21, 2012, 1:10:53 AM3/21/12

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I would like to use the Guice in my remote servlet but encountered this annoying errors.

Before starting my project there is error already.

WARNING: Error starting handlers

java.lang.NoSuchMethodError: com.google.inject.Scopes.isSingleton(Lcom/google/inject/Binding;)Z

at com.google.inject.servlet.ServletDefinition.init(ServletDefinition.java:103)

at com.google.inject.servlet.ManagedServletPipeline.init(ManagedServletPipeline.java:82)

at com.google.inject.servlet.ManagedFilterPipeline.initPipeline(ManagedFilterPipeline.java:102)

at com.google.inject.servlet.GuiceFilter.init(GuiceFilter.java:172)

at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662)

at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)

at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)

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:191)

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.gwt.AppEngineLauncher.start(AppEngineLauncher.java:97)

at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)

at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)

at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)

at com.google.gwt.dev.DevMode.main(DevMode.java:311)

After starting the project.

404 <html>

<head>

<title>Error 404 NOT_FOUND</title>

</head>

<body>

<h2>HTTP ERROR: 404</h2>

<p>Problem accessing /mercado/login. Reason:

<pre> NOT_FOUND</pre></p>

<hr /><i><small>Powered by Jetty://</small></i>

Here is my code.

web.xml

<listener-class>ph.com.mercado.server.ioc.GuiceServletListener</listener-class>

</listener>

<filter-name>guiceFilter</filter-name>

<filter-class>com.google.inject.servlet.GuiceFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>guiceFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

public class GuiceServiceModule extends AbstractModule {

@Override

protected void configure() {

bind(LoginServiceImpl.class).in(Singleton.class);

public class GuiceServletListener extends GuiceServletContextListener{

@Override

public Injector getInjector() {

return Guice.createInjector(new GuiceServletModule(), new GuiceServiceModule());

}

public class GuiceServletModule extends ServletModule {

@Override

protected void configureServlets() {

serve("/mercado/login").with(LoginServiceImpl.class);

@RemoteServiceRelativePath("login")

public interface LoginService extends RemoteService {

public LoginInfo loginGoggle(String requestUri);

public class LoginServiceImpl extends RemoteServiceServlet implements

LoginService {

@Inject

private UserDao userDao;

@Override

public LoginInfo loginGoggle(String requestUri) {}

}

What seems to be the problem? Thank you.

Damien Irving

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May 30, 2012, 10:44:27 AM5/30/12

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I have this issue also, did you find a solution for it?

Ali Thabet

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May 30, 2012, 3:45:27 PM5/30/12

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did you have guice-snapshot.jar in your classpath?

Mark Diesta

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May 31, 2012, 3:27:41 AM5/31/12

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It was a jar issues. You should check if you have multiple guice jars in your build path. As much as possible use the guice included in the gin so there will be no conflict.

On Thu, May 31, 2012 at 3:45 AM, Ali Thabet <thabet...@gmail.com> wrote:

did you have guice-snapshot.jar in your classpath?

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Thomas Broyer

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May 31, 2012, 4:08:52 AM5/31/12

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On Thursday, May 31, 2012 9:27:41 AM UTC+2, Mark Diesta wrote:

It was a jar issues. You should check if you have multiple guice jars in your build path. As much as possible use the guice included in the gin so there will be no conflict.

GIN works well with Guice 3 though, if you prefer stable versions.

FYI, GIN 1.5.0 on Maven depends on Guice 3.0-rc2 (which is forward-compatible with 3.0)

BTW, this is also advertized on the project home page https://code.google.com/p/google-gin/ (though a bit outdated, as it still talks about the "soon-to-be-released Guice 3.0", and should probably link to http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.google.gwt.inject%22%20AND%20a%3A%22gin%22 for Maven dependencies)

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