那些遇到过的问题

已在未在活动泽西错误范围中运行的代码中检测到HK2故障

Seb*_*rey 11 java dependency-injection jersey jersey-2.0 hk2

目前我正在开发基于运动衫的RESTful应用程序,并希望在我的资源中使用DPI.(注意:jersey的版本是2.23.1,servlet容器是tomcat 8.5.3.)

因此,我遵循了球衣文档中的第23章自定义注入和生命周期管理教程,并创建了一个资源,一个工厂,并将工厂绑定到这样的类:

资源:

@Path("/{project}/catalogs")
public class ProjectsResource {

   @Inject
   Project project;

   ...
}
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厂:

public class ProjectFactory extends Factory<Project> {

  private final Cache cache = cache.getInstance();

  @PathParam("project")
  private String project;

  private HttpServletRequest request;

  @Inject
  public ProjectFactory(HttpServletRequest request) {
    this.request = request;
  }

  @Override
  public Project provide() {
    return cache.get(project, Project.class);
  }

  @Override
  public void dispose(Project instance) {}

}
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我还有一个功能,它注册一个AbstractBinder,它将我的ProjectFactory绑定到我的Project类.

@Provider
public class ProjectFeature implements Feature {

  @Override
  public boolean configure(FeatureContext context) {

    context.register(new AbstractBinder() {
      @Override
      protected void configure() {
      bindFactory(ProjectFactory.class)
          .to(Project.class)
          .proxy(false)
          .proxyForSameScope(true)
          .in(RequestScoped.class);
    });

    return true;
  }

}
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实际问题是,当我调用我的资源时,一切都很好,我可以访问我的项目实例,但在我的tomcat catalina日志中,我得到以下堆栈跟踪:

22-Jul-2016 16:29:46.510 WARNING [pool-24-thread-1] org.glassfish.jersey.internal.Errors.logErrors The following warnings have been detected: WARNING: HK2 failure has been detected in a code that does not run in an active Jersey Error scope.
WARNING: Unknown HK2 failure detected:
MultiException stack 1 of 3
java.lang.IllegalStateException: Not inside a request scope.
    at jersey.repackaged.com.google.common.base.Preconditions.checkState(Preconditions.java:173)
    at org.glassfish.jersey.process.internal.RequestScope.current(RequestScope.java:233)
    at org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:158)
    at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2022)
    at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:765)
    at org.jvnet.hk2.internal.ServiceLocatorImpl.getUnqualifiedService(ServiceLocatorImpl.java:772)
    at org.jvnet.hk2.internal.IterableProviderImpl.get(IterableProviderImpl.java:111)
    at org.glassfish.jersey.server.internal.inject.AbstractContainerRequestValueFactory.getContainerRequest(AbstractContainerRequestValueFactory.java:71)
    at org.glassfish.jersey.server.internal.inject.PathParamValueFactoryProvider$PathParamValueFactory.provide(PathParamValueFactoryProvider.java:93)
    at org.glassfish.jersey.server.internal.inject.ParamInjectionResolver.resolve(ParamInjectionResolver.java:134)
    at org.jvnet.hk2.internal.ClazzCreator.resolve(ClazzCreator.java:211)
    at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:234)
    at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:357)
    at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
    at org.jvnet.hk2.internal.PerLookupContext.findOrCreate(PerLookupContext.java:70)
    at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2022)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:114)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:88)
    at org.jvnet.hk2.internal.FactoryCreator.dispose(FactoryCreator.java:175)
    at org.jvnet.hk2.internal.SystemDescriptor.dispose(SystemDescriptor.java:526)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.remove(RequestScope.java:532)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.release(RequestScope.java:549)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:968)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:922)
    at de.moss.ems.rest.resource.AbstractBaseResource.send(AbstractBaseResource.java:118)
    at de.moss.ems.rest.resource.AbstractBaseResource.resume(AbstractBaseResource.java:165)
    at de.moss.ems.rest.resource.catalog.CatalogsResource.handleGet(CatalogsResource.java:49)
    at de.moss.ems.rest.resource.catalog.AbstractCatalogResource.lambda$asyncGetRequest$0(AbstractCatalogResource.java:44)
    at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
MultiException stack 2 of 3
java.lang.IllegalArgumentException: While attempting to resolve the dependencies of de.moss.ems.rest.factory.ProjectFactory errors were found
    at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:246)
    at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:357)
    at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
    at org.jvnet.hk2.internal.PerLookupContext.findOrCreate(PerLookupContext.java:70)
    at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2022)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:114)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:88)
    at org.jvnet.hk2.internal.FactoryCreator.dispose(FactoryCreator.java:175)
    at org.jvnet.hk2.internal.SystemDescriptor.dispose(SystemDescriptor.java:526)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.remove(RequestScope.java:532)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.release(RequestScope.java:549)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:968)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:922)
    at de.moss.ems.rest.resource.AbstractBaseResource.send(AbstractBaseResource.java:118)
    at de.moss.ems.rest.resource.AbstractBaseResource.resume(AbstractBaseResource.java:165)
    at de.moss.ems.rest.resource.catalog.CatalogsResource.handleGet(CatalogsResource.java:49)
    at de.moss.ems.rest.resource.catalog.AbstractCatalogResource.lambda$asyncGetRequest$0(AbstractCatalogResource.java:44)
    at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
MultiException stack 3 of 3
java.lang.IllegalStateException: Unable to perform operation: resolve on de.moss.ems.rest.factory.ProjectFactory
    at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:386)
    at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
    at org.jvnet.hk2.internal.PerLookupContext.findOrCreate(PerLookupContext.java:70)
    at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2022)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:114)
    at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:88)
    at org.jvnet.hk2.internal.FactoryCreator.dispose(FactoryCreator.java:175)
    at org.jvnet.hk2.internal.SystemDescriptor.dispose(SystemDescriptor.java:526)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.remove(RequestScope.java:532)
    at org.glassfish.jersey.process.internal.RequestScope$Instance.release(RequestScope.java:549)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:968)
    at org.glassfish.jersey.server.ServerRuntime$AsyncResponder.resume(ServerRuntime.java:922)
    at de.moss.ems.rest.resource.AbstractBaseResource.send(AbstractBaseResource.java:118)
    at de.moss.ems.rest.resource.AbstractBaseResource.resume(AbstractBaseResource.java:165)
    at de.moss.ems.rest.resource.catalog.CatalogsResource.handleGet(CatalogsResource.java:49)
    at de.moss.ems.rest.resource.catalog.AbstractCatalogResource.lambda$asyncGetRequest$0(AbstractCatalogResource.java:44)
    at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

我有什么想法可以解决这个警告吗？

Seb*_*rey 5

当我将我的工厂绑定到我的接口时，我能够通过在我的 AbstractBinder 类中使用 HK2 的org.glassfish.hk2.api.PerLookupAnnotation 而不是 Jerseys org.glassfish.jersey.process.internal.RequestScopedAnnotation来解决这个问题。

import org.glassfish.hk2.api.PerLookup;

@Provider
public class ProjectFeature implements Feature {

  @Override
  public boolean configure(FeatureContext context) {

    context.register(new AbstractBinder() {
      @Override
      protected void configure() {
      bindFactory(ProjectFactory.class)
          .to(Project.class)
          .proxy(false)
          .proxyForSameScope(true)
          .in(PerLookup.class);
    });

    return true;
  }

}
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