Nullpointer Exception with JSONParser

Hi I discovered a NullPointerException.

We have a service running for several weeks now and it suddenly stopped working because of a NullPointer. The code is fairly simple

try (CloseableHttpClient httpClient = yesHttpClient.getHttpClient(); CloseableHttpResponse response = httpClient.execute(httpGet)) { JSONParser jsonParser = new JSONParser(JSONParser.MODE_JSON_SIMPLE); String jsonResponse = IOUtils.toString(response.getEntity().getContent()); log.trace("jsonResponse: {}", jsonResponse); this.yesConfiguration = jsonParser.parse(jsonResponse, YesServiceConfiguration.class); log.info("loaded YES-service-configuration: \n{}", this.yesConfiguration.toString()); }

you should be able to reproduce it. The URL of the YES-service is public and available for testing:

https://api.sandbox.yes.de/issuer/.well-known/openid-configuration

the result I am getting from the yes-service is:

jsonResponse: { "issuer" : "https:\/\/api.sandbox.yes.de\/issuer", "subject_types_supported" : [ "public", "pairwise" ], "jwks_uri" : "https:\/\/api.sandbox.yes.de\/issuer\/jwks.json", "authorization_endpoint" : "https:\/\/ui.sandbox.yes.de", "token_endpoint" : "https:\/\/api.sandbox.yes.de\/issuer\/token", "userinfo_endpoint" : "https:\/\/api.sandbox.yes.de\/issuer\/userinfo", "registration_endpoint" : "https:\/\/api.sandbox.yes.de\/issuer\/clients", "introspection_endpoint" : "https:\/\/api.sandbox.yes.de\/issuer\/token\/introspect", "revocation_endpoint" : "https:\/\/api.sandbox.yes.de\/issuer\/token\/revoke", "scopes_supported" : [ "openid", "email", "address", "phone", "https:\/\/yes.de\/person_data", "https:\/\/yes.de\/document.consent", "https:\/\/yes.de\/iban", "https:\/\/yes.de\/account_holder" ], "response_types_supported" : [ "code", "id_token", "id_token token", "code id_token", "code id_token token" ], "response_modes_supported" : [ "query", "fragment", "form_post" ], "grant_types_supported" : [ "implicit", "authorization_code", "refresh_token", "password", "client_credentials", "urn:ietf:params:oauth:grant-type:jwt-bearer" ], "code_challenge_methods_supported" : [ "S256", "plain" ], "acr_values_supported" : [ "0" ], "token_endpoint_auth_methods_supported" : [ "client_secret_basic", "client_secret_post", "client_secret_jwt", "private_key_jwt", "none" ], "token_endpoint_auth_signing_alg_values_supported" : [ "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "PS256", "PS384", "PS512", "ES256", "ES384", "ES512" ], "request_object_signing_alg_values_supported" : [ "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "PS256", "PS384", "PS512", "ES256", "ES384", "ES512", "none" ], "id_token_signing_alg_values_supported" : [ "RS256", "RS384", "RS512", "PS256", "PS384", "PS512", "ES256", "ES384", "ES512", "HS256", "HS384", "HS512", "none" ], "id_token_encryption_alg_values_supported" : [ "RSA1_5", "RSA-OAEP", "RSA-OAEP-256", "ECDH-ES", "ECDH-ES+A128KW", "ECDH-ES+A192KW", "ECDH-ES+A256KW", "dir", "A128KW", "A192KW", "A256KW", "A128GCMKW", "A192GCMKW", "A256GCMKW" ], "id_token_encryption_enc_values_supported" : [ "A128CBC-HS256", "A192CBC-HS384", "A256CBC-HS512", "A128GCM", "A192GCM", "A256GCM" ], "userinfo_signing_alg_values_supported" : [ "RS256", "RS384", "RS512", "PS256", "PS384", "PS512", "ES256", "ES384", "ES512", "HS256", "HS384", "HS512" ], "userinfo_encryption_alg_values_supported" : [ "RSA1_5", "RSA-OAEP", "RSA-OAEP-256", "ECDH-ES", "ECDH-ES+A128KW", "ECDH-ES+A192KW", "ECDH-ES+A256KW", "dir", "A128KW", "A192KW", "A256KW", "A128GCMKW", "A192GCMKW", "A256GCMKW" ], "userinfo_encryption_enc_values_supported" : [ "A128CBC-HS256", "A192CBC-HS384", "A256CBC-HS512", "A128GCM", "A192GCM", "A256GCM" ], "display_values_supported" : [ "page", "popup" ], "claim_types_supported" : [ "normal" ], "claims_supported" : [ "sub", "iss", "auth_time", "acr", "address", "email", "email_verified", "phone_number", "phone_number_verified", "https:\/\/yes.de\/salutation", "https:\/\/yes.de\/title", "https:\/\/yes.de\/given_name", "https:\/\/yes.de\/family_name", "https:\/\/yes.de\/gender", "https:\/\/yes.de\/place_of_birth", "https:\/\/yes.de\/birthdate", "https:\/\/yes.de\/nationality" ], "ui_locales_supported" : [ "en" ], "claims_parameter_supported" : true, "request_parameter_supported" : true, "request_uri_parameter_supported" : true, "require_request_uri_registration" : true, "frontchannel_logout_supported" : false, "backchannel_logout_supported" : false, "request_uri_quota" : 10 }

And this results in the following stacktrace

Context initialization failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'yesLegacyProtocolController': Unsatisfied dependency expressed through field 'yesClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'yesClient': Invocation of init method failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4743) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5207) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1702) 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:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:482) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:431) 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:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401) at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) at sun.reflect.GeneratedMethodAccessor615.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'yesClient': Invocation of init method failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:137) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:409) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585) ... 59 more Caused by: java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) at java.util.concurrent.ConcurrentHashMap.putIfAbsent(ConcurrentHashMap.java:1535) at net.minidev.json.writer.JsonReader.getMapper(JsonReader.java:152) at net.minidev.json.writer.JsonReader.getMapper(JsonReader.java:99) at net.minidev.json.writer.BeansMapper$Bean.startArray(BeansMapper.java:80) at net.minidev.json.parser.JSONParserBase.readMain(JSONParserBase.java:406) at net.minidev.json.parser.JSONParserBase.readObject(JSONParserBase.java:546) at net.minidev.json.parser.JSONParserBase.readFirst(JSONParserBase.java:301) at net.minidev.json.parser.JSONParserBase.parse(JSONParserBase.java:158) at net.minidev.json.parser.JSONParserString.parse(JSONParserString.java:58) at net.minidev.json.parser.JSONParser.parse(JSONParser.java:279) at de.governikus.aic.yes.config.YesConfigurationLoader.getYesConfiguration(YesConfigurationLoader.java:81) at de.governikus.aic.yes.actors.YesClient.initializeConfiguration(YesClient.java:120) 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:498)

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