Spring verwendet für die Instantiierung keinen annotierten Konstruktor (@JsonCreator)

Question

Ich verwende Spring 4.1.1 mit JavaConfig und Jackson 2.4.3.

Mein Controller sieht wie folgt aus:

@RestController 
public interface PatientWebService { 

    @RequestMapping(value = "/patients", method = POST) 
    PatientResource createPatient(@RequestBody PatientResource resource); 
} 

Die json ich wie folgt aussieht schicke:

{ 
    "firstName": "Max", 
    "lastName": "Mustermann", 
    "birthDate": "1964-04-14", 
    "sex": "MAN" 
} 

und ich möchte es in dieser Klasse analysiert werden:

package at.landsteiner.patient.web; 

import at.landsteiner.patient.Patient; 
import at.landsteiner.patient.Sex; 
import at.landsteiner.web.EntityResource; 
import com.fasterxml.jackson.annotation.JsonCreator; 
import com.fasterxml.jackson.annotation.JsonProperty; 

import java.time.LocalDate; 

public class PatientResource extends EntityResource { 

    private String firstName; 
    private String lastName; 
    private LocalDate birthDate; 
    private Sex sex; 

    @JsonCreator 
    public PatientResource(@JsonProperty("firstName") String firstName, @JsonProperty("lastName") String lastName, @JsonProperty("birthDate") LocalDate birthDate, @JsonProperty("sex") Sex sex) { 
     this.firstName = firstName; 
     this.lastName = lastName; 
     this.birthDate = birthDate; 
     this.sex = sex; 
    } 

    // getter 
} 

Dies ist der Ausgang, den ich erhalte:

19:43:41,842 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.DispatcherServlet.doService - DispatcherServlet with name 'DispatcherServlet' processing POST request for [/questionnaire-api/patients] 
19:43:41,846 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping.getHandlerInternal - Looking up handler method for path /patients 
19:43:41,850 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping.getHandlerInternal - Returning handler method [public at.landsteiner.patient.web.PatientResource at.landsteiner.patient.web.PatientWebServiceImpl.createPatient(at.landsteiner.patient.web.PatientResource)] 
19:43:41,850 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.b.f.s.DefaultListableBeanFactory.doGetBean - Returning cached instance of singleton bean 'patientWebServiceImpl' 
19:43:41,868 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver.resolveException - Resolving exception from handler [public at.landsteiner.patient.web.PatientResource at.landsteiner.patient.web.PatientWebServiceImpl.createPatient(at.landsteiner.patient.web.PatientResource)]: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [at.landsteiner.patient.web.PatientResource]: No default constructor found; nested exception is java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,869 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.m.a.ResponseStatusExceptionResolver.resolveException - Resolving exception from handler [public at.landsteiner.patient.web.PatientResource at.landsteiner.patient.web.PatientWebServiceImpl.createPatient(at.landsteiner.patient.web.PatientResource)]: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [at.landsteiner.patient.web.PatientResource]: No default constructor found; nested exception is java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,870 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.m.s.DefaultHandlerExceptionResolver.resolveException - Resolving exception from handler [public at.landsteiner.patient.web.PatientResource at.landsteiner.patient.web.PatientWebServiceImpl.createPatient(at.landsteiner.patient.web.PatientResource)]: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [at.landsteiner.patient.web.PatientResource]: No default constructor found; nested exception is java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,878 INFO [stdout] (default task-1) 19:43:41 DEBUG o.s.w.s.DispatcherServlet.processRequest - Could not complete request 
19:43:41,879 INFO [stdout] (default task-1) org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [at.landsteiner.patient.web.PatientResource]: No default constructor found; nested exception is java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:107) ~[spring-beans-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:139) ~[spring-web-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:79) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:105) ~[spring-web-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:77) ~[spring-web-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157) ~[spring-web-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124) ~[spring-web-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) ~[spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) [spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) [spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar!/:1.0.0.Final] 
19:43:41,879 INFO [stdout] (default task-1) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) [spring-webmvc-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,879 INFO [stdout] (default task-1) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar!/:1.0.0.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) [wildfly-undertow-8.1.0.Final.jar!/:8.1.0.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) [wildfly-undertow-8.1.0.Final.jar!/:8.1.0.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,882 INFO [stdout] (default task-1) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar!/:1.0.15.Final] 
19:43:41,883 INFO [stdout] (default task-1) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0] 
19:43:41,883 INFO [stdout] (default task-1) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0] 
19:43:41,883 INFO [stdout] (default task-1) at java.lang.Thread.run(Thread.java:744) [na:1.8.0] 
19:43:41,884 INFO [stdout] (default task-1) Caused by: java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,884 INFO [stdout] (default task-1) at java.lang.Class.getConstructor0(Class.java:2971) ~[na:1.8.0] 
19:43:41,884 INFO [stdout] (default task-1) at java.lang.Class.getDeclaredConstructor(Class.java:2165) ~[na:1.8.0] 
19:43:41,884 INFO [stdout] (default task-1) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:104) ~[spring-beans-4.1.1.RELEASE.jar:4.1.1.RELEASE] 
19:43:41,884 INFO [stdout] (default task-1) ... 43 common frames omitted 

Wie konfiguriere ich Spring, um die Instanziierung an Jackson zu delegieren?
Ist es sogar möglich, die Verwendung von @JsonCreator mit @RequestBody zu kombinieren?

Mein JavaConfig sieht wie folgt aus:

@Configuration 
@EnableWebMvc 
@ComponentScan(basePackages = { "at.landsteiner" }) 
public class WebConfig extends WebMvcConfigurerAdapter { 

    @Override 
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { 
     converters.add(converter()); 
    } 

    @Bean 
    public MappingJackson2HttpMessageConverter converter() { 
     ObjectMapper mapper = new ObjectMapper(); 

     mapper.registerModule(new JSR310Module()); 
     mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false); 

     return new MappingJackson2HttpMessageConverter(mapper); 
    } 
} 

Answer 1

Obwohl ich nicht mit Spring 4.1.1 getestet (aber mit Spring 4.0.5), habe ich festgestellt, dass das Problem ist, dass die Annotation @RequestBody ist nur in der Schnittstelle vorhanden.

Spring wird nicht die Annotation des Arguments method von der Schnittstelle betrachten (nicht einmal sicher, ob das möglich ist), sondern nur von der konkreten Implementierung.

Aufgrund der fehlenden Annotation in der konkreten Implementierung versucht Spring, Jackson überhaupt zum Instanziieren des Objekts zu verwenden, verwendet jedoch die normale Bean-Methode.

Wenn Sie einfach nur die Anmerkung das Argument des konkreten Verfahrens als auch hinzufügen, alles wird gut funktionieren

Answer 2

org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [at.landsteiner.patient.web.PatientResource]: No default constructor found; nested exception is java.lang.NoSuchMethodException: at.landsteiner.patient.web.PatientResource.<init>() 
19:43:41,879 INFO [stdout] (default task- 

Frühling versuchen Bean ohne Argument mit Standard-Konstruktor initialisiert werden, aber Ihr Konstruktor bekommt Objekt. Auch Sie haben eine Schnittstelle geschrieben, aber ich habe keine Implementierung der Schnittstelle