@Path анотация: абстрактен ресурс в dropwizard

Имах идея да създам абстрактен ресурсен клас за моето приложение:

abstract class MyAbstractResource<A> {
    MyAbstractDao dao;

    public MyAbstractResource(MyAbstractDao dao) {
        this.dao = dao;
    }

    @Path("/")
    @POST
    @Produces(MediaType.APPLICATION_JSON)
    @Timed
    public A create(A account) {
        return dao.create(account);
    }

    @Path("/{id}")
    @PUT
    @Produces(MediaType.APPLICATION_JSON)
    @Timed
    public A update(A account) {
        return dao.change(account);
    }

    @Path("/{id}")
    @DELETE
    @Produces(MediaType.APPLICATION_JSON)
    @Timed
    public void delete(@PathParam("id") Long id) {
        dao.delete(id);
    }

    @Path("/{id}")
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Timed
    public A get(@PathParam("id") Long id) {
        return dao.findById(id);
    }

    @Path("/")
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Timed
    public List<A> getAll() {
        return dao.findAll();
    }
}

и реализации като:

@Path("/account")
class AccountResource extends MyAbstractResource<AccountDaoImpl> {
    private static final Logger LOG = LoggerFactory.getLogger(AccountResource.class)
}

, но се сблъсках с проблем, че анотацията @Path не може да бъде заменена или добавена:

Exception in thread "main" javax.servlet.ServletException: org.glassfish.jersey.servlet.ServletContainer-164d01ba@41f867a3==org.glassfish.jersey.servlet.ServletContainer,1,false
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:633)
at org.eclipse.jetty.servlet.ServletHolder.initialize(ServletHolder.java:395)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:871)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:298)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at com.codahale.metrics.jetty9.InstrumentedHandler.doStart(InstrumentedHandler.java:102)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.handler.RequestLogHandler.doStart(RequestLogHandler.java:140)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.handler.StatisticsHandler.doStart(StatisticsHandler.java:232)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.server.Server.start(Server.java:387)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.Server.doStart(Server.java:354)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at io.dropwizard.cli.ServerCommand.run(ServerCommand.java:43)
at io.dropwizard.cli.EnvironmentCommand.run(EnvironmentCommand.java:43)
at io.dropwizard.cli.ConfiguredCommand.run(ConfiguredCommand.java:76)
at io.dropwizard.cli.Cli.run(Cli.java:70)
at io.dropwizard.Application.run(Application.java:73)
at io.dropwizard.Application$run.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:110)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:122)
at com.fappilla.web.FappillaWebService.main(MyWebService.groovy:24)
Caused by: java.lang.IllegalArgumentException: duplicate key: public java.util.List com.fappilla.web.resources.AbstractFappillaResource.getAll()
at jersey.repackaged.com.google.common.base.Preconditions.checkArgument(Preconditions.java:119)
at jersey.repackaged.com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:67)
at jersey.repackaged.com.google.common.collect.ImmutableMap$Builder.fromEntryList(ImmutableMap.java:249)
at jersey.repackaged.com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:235)
at com.codahale.metrics.jersey2.InstrumentedResourceMethodApplicationListener.onEvent(InstrumentedResourceMethodApplicationListener.java:178)
at org.glassfish.jersey.server.internal.monitoring.CompositeApplicationEventListener.onEvent(CompositeApplicationEventListener.java:74)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:561)
at org.glassfish.jersey.server.ApplicationHandler.access$500(ApplicationHandler.java:166)
at org.glassfish.jersey.server.ApplicationHandler$3.run(ApplicationHandler.java:327)
at org.glassfish.jersey.internal.Errors$2.call(Errors.java:289)
at org.glassfish.jersey.internal.Errors$2.call(Errors.java:286)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:324)
at org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:336)
at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:170)
at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
at javax.servlet.GenericServlet.init(GenericServlet.java:244)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:612)
... 40 more

Доколкото разбирам, @Path-анотацията не е @Inherited. Въпросът е: как мога да внедря методи само веднъж за множество DAO и ресурси в такъв случай? Има ли някакво решение?

PS: Използвам groovy в моя проект, но написах java код по-горе, за да позволя на повече хора да ми дават съвети, така че и java, и groovy отговорите са добре дошли.


java jetty groovy annotations dropwizard
person Ilya Ananyev    schedule 19.05.2015    source източник
comment
Виждали ли сте вече тази връзка: stackoverflow.com/questions/25916796/inheritance -с-jax-rs?   -  person Opal    schedule 19.05.2015

Отговори (2)


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1
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Добре, проблемът беше анотацията "@Timed". Изтриването му реши проблема.

person Ilya Ananyev    schedule 26.05.2015

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В случай, че някой друг попадне на това, друго решение е да копирате InstrumentedResourceMethodApplicationListener.java от https://gist.github.com/mtakaki/746dba30edfefc0ffbd5 във вашия classpath - той ще бъде взет от програмата за зареждане на класове през официалния клас от буркана с метрики.

За повече информация вижте:

Проверих, че това коригира проблема с ресурсите на суперклас, които използват @Timed анотации на Dropwizard 0.9.1.

person gnmerritt    schedule 28.01.2016