dropwizard 中的单元测试视图 (sequel)
Unit testing views in dropwizard (sequel)
如related post I am trying to test my resources in Dropwizard. The resources can both return json data and views. The latter work with freemarker templates. For testing paths which return views I extended the code of the dropwizard manual中提到的还要添加一个供应商：
@ClassRule
public static final ResourceTestRule resources = ResourceTestRule.builder()
.addResource(new MyResource(myDAO)).addProvider(ViewMessageBodyWriter.class).build();
然而，结果是以下冗长的错误消息：
WARN [2015-04-14 12:00:33,471] org.glassfish.jersey.internal.Errors: The following warnings have been detected: WARNING: HK2 service reification failed for [io.dropwizard.views.ViewMessageBodyWriter] with an exception:
MultiException stack 1 of 2
java.lang.NoSuchMethodException: Could not find a suitable constructor in io.dropwizard.views.ViewMessageBodyWriter class.
at org.glassfish.jersey.internal.inject.JerseyClassAnalyzer.getConstructor(JerseyClassAnalyzer.java:189)
at org.jvnet.hk2.internal.Utilities.getConstructor(Utilities.java:180)
at org.jvnet.hk2.internal.ClazzCreator.initialize(ClazzCreator.java:129)
at org.jvnet.hk2.internal.ClazzCreator.initialize(ClazzCreator.java:182)
at org.jvnet.hk2.internal.SystemDescriptor.internalReify(SystemDescriptor.java:723)
at org.jvnet.hk2.internal.SystemDescriptor.reify(SystemDescriptor.java:678)
at org.jvnet.hk2.internal.ServiceLocatorImpl.reifyDescriptor(ServiceLocatorImpl.java:416)
at org.jvnet.hk2.internal.ServiceLocatorImpl.narrow(ServiceLocatorImpl.java:2146)
at org.jvnet.hk2.internal.ServiceLocatorImpl.access00(ServiceLocatorImpl.java:120)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1281)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1276)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:115)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:111)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.run(LRUHybridCache.java:173)
at org.glassfish.hk2.utilities.cache.LRUHybridCache.compute(LRUHybridCache.java:292)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetAllServiceHandles(ServiceLocatorImpl.java:1354)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1263)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1252)
at org.glassfish.jersey.internal.inject.Providers.getServiceHandles(Providers.java:352)
at org.glassfish.jersey.internal.inject.Providers.getCustomProviders(Providers.java:200)
at org.glassfish.jersey.message.internal.MessageBodyFactory.<init>(MessageBodyFactory.java:247)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
at org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:82)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:70)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.call(Cache.java:97)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
at org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
at org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:121)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
at org.glassfish.jersey.server.model.ComponentModelValidator.<init>(ComponentModelValidator.java:97)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:496)
at org.glassfish.jersey.server.ApplicationHandler.access0(ApplicationHandler.java:166)
at org.glassfish.jersey.server.ApplicationHandler.run(ApplicationHandler.java:327)
at org.glassfish.jersey.internal.Errors.call(Errors.java:289)
at org.glassfish.jersey.internal.Errors.call(Errors.java:286)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:324)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:277)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:77)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:63)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory.create(InMemoryTestContainerFactory.java:111)
at org.glassfish.jersey.test.JerseyTest.createTestContainer(JerseyTest.java:277)
at org.glassfish.jersey.test.JerseyTest.setUp(JerseyTest.java:609)
at io.dropwizard.testing.junit.ResourceTestRule.evaluate(ResourceTestRule.java:157)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
MultiException stack 2 of 2
java.lang.IllegalArgumentException: Errors were discovered while reifying SystemDescriptor(
implementation=io.dropwizard.views.ViewMessageBodyWriter
contracts={javax.ws.rs.ext.MessageBodyWriter}
scope=javax.inject.Singleton
qualifiers={org.glassfish.jersey.internal.inject.Custom}
descriptorType=CLASS
descriptorVisibility=NORMAL
metadata=
rank=0
loader=null
proxiable=null
proxyForSameScope=null
analysisName=null
id=118
locatorId=1
identityHashCode=389247924
reified=false)
at org.jvnet.hk2.internal.SystemDescriptor.reify(SystemDescriptor.java:689)
at org.jvnet.hk2.internal.ServiceLocatorImpl.reifyDescriptor(ServiceLocatorImpl.java:416)
at org.jvnet.hk2.internal.ServiceLocatorImpl.narrow(ServiceLocatorImpl.java:2146)
at org.jvnet.hk2.internal.ServiceLocatorImpl.access00(ServiceLocatorImpl.java:120)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1281)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1276)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:115)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:111)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.run(LRUHybridCache.java:173)
at org.glassfish.hk2.utilities.cache.LRUHybridCache.compute(LRUHybridCache.java:292)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetAllServiceHandles(ServiceLocatorImpl.java:1354)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1263)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1252)
at org.glassfish.jersey.internal.inject.Providers.getServiceHandles(Providers.java:352)
at org.glassfish.jersey.internal.inject.Providers.getCustomProviders(Providers.java:200)
at org.glassfish.jersey.message.internal.MessageBodyFactory.<init>(MessageBodyFactory.java:247)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
at org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:82)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:70)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.call(Cache.java:97)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
at org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
at org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:121)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
at org.glassfish.jersey.server.model.ComponentModelValidator.<init>(ComponentModelValidator.java:97)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:496)
at org.glassfish.jersey.server.ApplicationHandler.access0(ApplicationHandler.java:166)
at org.glassfish.jersey.server.ApplicationHandler.run(ApplicationHandler.java:327)
at org.glassfish.jersey.internal.Errors.call(Errors.java:289)
at org.glassfish.jersey.internal.Errors.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.server.ApplicationHandler.<init>(ApplicationHandler.java:277)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:77)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:63)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory.create(InMemoryTestContainerFactory.java:111)
at org.glassfish.jersey.test.JerseyTest.createTestContainer(JerseyTest.java:277)
at org.glassfish.jersey.test.JerseyTest.setUp(JerseyTest.java:609)
at io.dropwizard.testing.junit.ResourceTestRule.evaluate(ResourceTestRule.java:157)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
看起来 HK2 无法通过仅给出 class 名称来实例化 ViewMessageBodyWriter；这意味着您需要自己创建它。 There is an example in dropwizard tests.
@ClassRule
public static final ResourceTestRule resources = ResourceTestRule.builder()
.addResource(new MyResource(myDAO)).addProvider(new ViewMessageBodyWriter(new MetricRegistry(), ImmutableList.of(new FreemarkerViewRenderer()))).build();
如related post I am trying to test my resources in Dropwizard. The resources can both return json data and views. The latter work with freemarker templates. For testing paths which return views I extended the code of the dropwizard manual中提到的还要添加一个供应商：
@ClassRule
public static final ResourceTestRule resources = ResourceTestRule.builder()
.addResource(new MyResource(myDAO)).addProvider(ViewMessageBodyWriter.class).build();
然而，结果是以下冗长的错误消息：
WARN [2015-04-14 12:00:33,471] org.glassfish.jersey.internal.Errors: The following warnings have been detected: WARNING: HK2 service reification failed for [io.dropwizard.views.ViewMessageBodyWriter] with an exception:
MultiException stack 1 of 2
java.lang.NoSuchMethodException: Could not find a suitable constructor in io.dropwizard.views.ViewMessageBodyWriter class.
at org.glassfish.jersey.internal.inject.JerseyClassAnalyzer.getConstructor(JerseyClassAnalyzer.java:189)
at org.jvnet.hk2.internal.Utilities.getConstructor(Utilities.java:180)
at org.jvnet.hk2.internal.ClazzCreator.initialize(ClazzCreator.java:129)
at org.jvnet.hk2.internal.ClazzCreator.initialize(ClazzCreator.java:182)
at org.jvnet.hk2.internal.SystemDescriptor.internalReify(SystemDescriptor.java:723)
at org.jvnet.hk2.internal.SystemDescriptor.reify(SystemDescriptor.java:678)
at org.jvnet.hk2.internal.ServiceLocatorImpl.reifyDescriptor(ServiceLocatorImpl.java:416)
at org.jvnet.hk2.internal.ServiceLocatorImpl.narrow(ServiceLocatorImpl.java:2146)
at org.jvnet.hk2.internal.ServiceLocatorImpl.access00(ServiceLocatorImpl.java:120)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1281)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1276)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:115)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:111)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.run(LRUHybridCache.java:173)
at org.glassfish.hk2.utilities.cache.LRUHybridCache.compute(LRUHybridCache.java:292)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetAllServiceHandles(ServiceLocatorImpl.java:1354)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1263)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1252)
at org.glassfish.jersey.internal.inject.Providers.getServiceHandles(Providers.java:352)
at org.glassfish.jersey.internal.inject.Providers.getCustomProviders(Providers.java:200)
at org.glassfish.jersey.message.internal.MessageBodyFactory.<init>(MessageBodyFactory.java:247)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
at org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:82)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:70)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.call(Cache.java:97)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
at org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
at org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:121)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
at org.glassfish.jersey.server.model.ComponentModelValidator.<init>(ComponentModelValidator.java:97)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:496)
at org.glassfish.jersey.server.ApplicationHandler.access0(ApplicationHandler.java:166)
at org.glassfish.jersey.server.ApplicationHandler.run(ApplicationHandler.java:327)
at org.glassfish.jersey.internal.Errors.call(Errors.java:289)
at org.glassfish.jersey.internal.Errors.call(Errors.java:286)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:324)
at org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:277)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:77)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:63)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory.create(InMemoryTestContainerFactory.java:111)
at org.glassfish.jersey.test.JerseyTest.createTestContainer(JerseyTest.java:277)
at org.glassfish.jersey.test.JerseyTest.setUp(JerseyTest.java:609)
at io.dropwizard.testing.junit.ResourceTestRule.evaluate(ResourceTestRule.java:157)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
MultiException stack 2 of 2
java.lang.IllegalArgumentException: Errors were discovered while reifying SystemDescriptor(
implementation=io.dropwizard.views.ViewMessageBodyWriter
contracts={javax.ws.rs.ext.MessageBodyWriter}
scope=javax.inject.Singleton
qualifiers={org.glassfish.jersey.internal.inject.Custom}
descriptorType=CLASS
descriptorVisibility=NORMAL
metadata=
rank=0
loader=null
proxiable=null
proxyForSameScope=null
analysisName=null
id=118
locatorId=1
identityHashCode=389247924
reified=false)
at org.jvnet.hk2.internal.SystemDescriptor.reify(SystemDescriptor.java:689)
at org.jvnet.hk2.internal.ServiceLocatorImpl.reifyDescriptor(ServiceLocatorImpl.java:416)
at org.jvnet.hk2.internal.ServiceLocatorImpl.narrow(ServiceLocatorImpl.java:2146)
at org.jvnet.hk2.internal.ServiceLocatorImpl.access00(ServiceLocatorImpl.java:120)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1281)
at org.jvnet.hk2.internal.ServiceLocatorImpl.compute(ServiceLocatorImpl.java:1276)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:115)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.call(LRUHybridCache.java:111)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.LRUHybridCache$OriginThreadAwareFuture.run(LRUHybridCache.java:173)
at org.glassfish.hk2.utilities.cache.LRUHybridCache.compute(LRUHybridCache.java:292)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetAllServiceHandles(ServiceLocatorImpl.java:1354)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1263)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getAllServiceHandles(ServiceLocatorImpl.java:1252)
at org.glassfish.jersey.internal.inject.Providers.getServiceHandles(Providers.java:352)
at org.glassfish.jersey.internal.inject.Providers.getCustomProviders(Providers.java:200)
at org.glassfish.jersey.message.internal.MessageBodyFactory.<init>(MessageBodyFactory.java:247)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
at org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:82)
at org.jvnet.hk2.internal.SingletonContext.compute(SingletonContext.java:70)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.call(Cache.java:97)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
at org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
at org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:121)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
at org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
at org.glassfish.jersey.server.model.ComponentModelValidator.<init>(ComponentModelValidator.java:97)
at org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:496)
at org.glassfish.jersey.server.ApplicationHandler.access0(ApplicationHandler.java:166)
at org.glassfish.jersey.server.ApplicationHandler.run(ApplicationHandler.java:327)
at org.glassfish.jersey.internal.Errors.call(Errors.java:289)
at org.glassfish.jersey.internal.Errors.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.server.ApplicationHandler.<init>(ApplicationHandler.java:277)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:77)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory$InMemoryTestContainer.<init>(InMemoryTestContainerFactory.java:63)
at org.glassfish.jersey.test.inmemory.InMemoryTestContainerFactory.create(InMemoryTestContainerFactory.java:111)
at org.glassfish.jersey.test.JerseyTest.createTestContainer(JerseyTest.java:277)
at org.glassfish.jersey.test.JerseyTest.setUp(JerseyTest.java:609)
at io.dropwizard.testing.junit.ResourceTestRule.evaluate(ResourceTestRule.java:157)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
看起来 HK2 无法通过仅给出 class 名称来实例化 ViewMessageBodyWriter；这意味着您需要自己创建它。 There is an example in dropwizard tests.
@ClassRule
public static final ResourceTestRule resources = ResourceTestRule.builder()
.addResource(new MyResource(myDAO)).addProvider(new ViewMessageBodyWriter(new MetricRegistry(), ImmutableList.of(new FreemarkerViewRenderer()))).build();