コンストラクター注入を使用して Bean を作成し、Spring Cloud アノテーションでアノテーションを付けようとしています@EnableBinding。
Spring Boot1.3.3と Spring Cloudを使用していBrixton.M5ます。
アプリの起動中に次の例外が発生します。
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'locationReceiver' defined in file [<path>/projects/location/location-microservice/target/classes/<xxx>/location/microservice/stream/LocationReceiver.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [xxx.location.microservice.stream.LocationReceiver$$EnhancerBySpringCGLIB$$b2012a14]: No default constructor found; nested exception is java.lang.NoSuchMethodException: xxx.location.microservice.stream.LocationReceiver$$EnhancerBySpringCGLIB$$b2012a14.<init>()
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]
at xxx.location.microservice.LocationMicroservice.main(LocationMicroservice.java:13) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_72]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_72]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_72]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_72]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.3.3.RELEASE.jar:1.3.3.RELEASE]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [xxx.location.microservice.stream.LocationReceiver$$EnhancerBySpringCGLIB$$b2012a14]: No default constructor found; nested exception is java.lang.NoSuchMethodException: xxx.location.microservice.stream.LocationReceiver$$EnhancerBySpringCGLIB$$b2012a14.<init>()
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
... 22 common frames omitted
Caused by: java.lang.NoSuchMethodException: xxx.location.microservice.stream.LocationReceiver$$EnhancerBySpringCGLIB$$b2012a14.<init>()
at java.lang.Class.getConstructor0(Class.java:3082) ~[na:1.8.0_72]
at java.lang.Class.getDeclaredConstructor(Class.java:2178) ~[na:1.8.0_72]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80) ~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
... 23 common frames omitted
次の場合、この例外は消えます。
@EnableBinding削除されます@Autowired引数なしのコンストラクターが導入されました (明らかに、引数を含むコンストラクターの注釈にもかかわらず、それが使用されます)- 代わりにフィールド注入が使用されます
以下のコード スニペット:
@EnableBinding(Sink.class)
public class LocationReceiver {
// @Autowired
private final LocationModelRepository repository;
// LocationReceiver() {
// repository = null;
// }
@Autowired
public LocationReceiver(LocationModelRepository repository) {
this.repository = repository;
}
}
CGLIB プロキシと何らかの関係があるのでしょうが、Spring 4 からコンストラクター インジェクションをサポートする必要があります。
誰が何が悪いのか考えていますか？それは私のせいですか、それとも Spring Cloud Data Flow のバグですか?