spring-projects-issues
commented
7 years ago Michael Igler commented
I think the cure is in https://github.com/spring-projects/spring-hateoas/blob/master/src/main/java/org/springframework/hateoas/hal/Jackson2HalModule.java Line 612 where
public HalResourcesDeserializer(JavaType vc) { this(TypeFactory.defaultInstance().constructCollectionLikeType(List.class, vc), vc); }
is better than what I have when debugging things:
public HalResourcesDeserializer(JavaType vc) { this(null, vc); }
Michael Igler opened DATAREST-1147 and commented
When trying to map a response from a GET-request back to a resources-list I am getting a NPE:
@Autowiredprivate BeanFactory beanFactory; ... halObjectMapper = (ObjectMapper) beanFactory.getBean("_halObjectMapper"); halObjectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); halObjectMapper.enable(SerializationFeature.INDENT_OUTPUT); halObjectMapper.registerModule(new Jackson2HalModule()); halObjectMapper.registerModule(new MrBeanModule()); ... Resources<Resource\java.lang.NullPointerException at com.fasterxml.jackson.databind.deser.std.StdDeserializer.\(StdDeserializer.java:66)
at com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase.\(ContainerDeserializerBase.java:52)
at com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase.\(ContainerDeserializerBase.java:60)
at org.springframework.hateoas.hal.Jackson2HalModule$HalResourcesDeserializer.\(Jackson2HalModule.java:618)
at org.springframework.hateoas.hal.Jackson2HalModule$HalResourcesDeserializer.\(Jackson2HalModule.java:613)
at org.springframework.hateoas.hal.Jackson2HalModule$HalResourcesDeserializer.createContextual(Jackson2HalModule.java:678)
at com.fasterxml.jackson.databind.DeserializationContext.handlePrimaryContextualization(DeserializationContext.java:651)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.constructSettableProperty(BeanDeserializerFactory.java:848)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.addBeanProps(BeanDeserializerFactory.java:564)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:269)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:179)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:411)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:349)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:477)
at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:4179)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3997)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3030)
at de.....ReleaseFormatRestTest.testFindReleaseFormats(ReleaseFormatRestTest.java:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:200)
at org.springframework.test.context.testng.AbstractTestNGSpringContextTests.run(AbstractTestNGSpringContextTests.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:212)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:707)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:343)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
at org.testng.SuiteRunner.run(SuiteRunner.java:254)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)
Affects: 3.0 GA (Kay)