SDN4 - Neo4j OGM + 杰克逊 2.0
SDN4 - Neo4j OGM + Jackson 2.0
我正在尝试在 Spring Data Neo4j 4.0.0RC1 实体上使用 Jackson 2.x 注释,但我发现我的应用程序上下文开始失败。我有两个 @NodeEntities
实现了一个接口,我已经这样注释了接口:
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type")
@JsonSubTypes({
@Type(value = SimpleNode.class, name="simple"),
@Type(value = OtherNode.class, name="other")
})
public interface Node {
}
我相信这是正确的用法,但是当我启动我的应用程序时,由于创建 Neo4j 会话工厂时出现问题,Spring 上下文无法加载。
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getSessionFactory' defined in class path resource [com/example/TestApplication$Neo4jConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.neo4j.ogm.session.SessionFactory]: Factory method 'getSessionFactory' threw exception; nested exception is java.lang.ClassFormatError: Invalid annotation element type tag: 0x0
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:322) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.getSessionFactory(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.data.neo4j.config.Neo4jConfiguration.getSession(Neo4jConfiguration.java:49) ~[spring-data-neo4j-4.0.0.RC1.jar:na]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.CGLIB$getSession(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5$$FastClassBySpringCGLIB$$a7919784.invoke(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.getSession(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 94 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.neo4j.ogm.session.SessionFactory]: Factory method 'getSessionFactory' threw exception; nested exception is java.lang.ClassFormatError: Invalid annotation element type tag: 0x0
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 115 common frames omitted
在尝试我的配置时,我能够确定 OGM 代码(版本 1.1.0)似乎在 @JsonSubTypes
上阻塞。如果我用抽象 class 替换我的界面,也会发生此错误。最后,我注意到在 org.neo4j.ogm.metadata.info.AnnotationsInfo
构造函数(第 89 行)中有一个 TODO 显示 // todo: maybe register just the annotations we're interested in.
我的问题是:
- 有没有优雅的解决方法?我认为多态反序列化并不是一个完全不常见的用例?
- 我对 Jackson 注释的使用是否正确?
这很可能是 https://jira.spring.io/browse/DATAGRAPH-674
中修复的问题
它将在 neo4j-ogm 1.1.1 中可用,但在发布之前,您可以使用快照版本 1.1.1-SNAPSHOT
您还需要包括快照存储库-
<repository>
<id>neo4j-snapshots</id>
<url>http://m2.neo4j.org/content/repositories/snapshots</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
我正在尝试在 Spring Data Neo4j 4.0.0RC1 实体上使用 Jackson 2.x 注释,但我发现我的应用程序上下文开始失败。我有两个 @NodeEntities
实现了一个接口,我已经这样注释了接口:
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type")
@JsonSubTypes({
@Type(value = SimpleNode.class, name="simple"),
@Type(value = OtherNode.class, name="other")
})
public interface Node {
}
我相信这是正确的用法,但是当我启动我的应用程序时,由于创建 Neo4j 会话工厂时出现问题,Spring 上下文无法加载。
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getSessionFactory' defined in class path resource [com/example/TestApplication$Neo4jConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.neo4j.ogm.session.SessionFactory]: Factory method 'getSessionFactory' threw exception; nested exception is java.lang.ClassFormatError: Invalid annotation element type tag: 0x0
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:322) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.getSessionFactory(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.data.neo4j.config.Neo4jConfiguration.getSession(Neo4jConfiguration.java:49) ~[spring-data-neo4j-4.0.0.RC1.jar:na]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.CGLIB$getSession(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5$$FastClassBySpringCGLIB$$a7919784.invoke(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at com.example.TestApplication$Neo4jConfig$$EnhancerBySpringCGLIB$$e5734e5.getSession(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 94 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.neo4j.ogm.session.SessionFactory]: Factory method 'getSessionFactory' threw exception; nested exception is java.lang.ClassFormatError: Invalid annotation element type tag: 0x0
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 115 common frames omitted
在尝试我的配置时,我能够确定 OGM 代码(版本 1.1.0)似乎在 @JsonSubTypes
上阻塞。如果我用抽象 class 替换我的界面,也会发生此错误。最后,我注意到在 org.neo4j.ogm.metadata.info.AnnotationsInfo
构造函数(第 89 行)中有一个 TODO 显示 // todo: maybe register just the annotations we're interested in.
我的问题是:
- 有没有优雅的解决方法?我认为多态反序列化并不是一个完全不常见的用例?
- 我对 Jackson 注释的使用是否正确?
这很可能是 https://jira.spring.io/browse/DATAGRAPH-674
中修复的问题它将在 neo4j-ogm 1.1.1 中可用,但在发布之前,您可以使用快照版本 1.1.1-SNAPSHOT 您还需要包括快照存储库-
<repository>
<id>neo4j-snapshots</id>
<url>http://m2.neo4j.org/content/repositories/snapshots</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>