我试图将Spring Data Rest合并到使用Spring Data Neo4J的应用程序中。当我将Spring Data Rest包含到我的应用程序中时，我在启动时遇到以下异常：
18:41:10.632 [main] INFO o.h.tool.hbm2ddl.SchemaUpdate - HHH000232: Schema update complete
18:41:11.280 [main] WARN o.e.j.u.component.AbstractLifeCycle - FAILED org.springframework.boot.context.embedded.jetty.ServletContextInitializerConfiguration$Initializer@2521bcf2: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter': Injection of autowired dependencies failed; nested exception is ...
// very long stack trace here
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.neo4j.support.Neo4jTemplate]: Circular reference involving containing bean 'myApplication' - consider declaring the factory method as static for independence from its containing instance. Factory method 'neo4jTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'neo4jMappingContext': Requested bean is currently in creation: Is there an unresolvable circular reference?
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]
... 277 common frames omitted
Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'neo4jMappingContext': Requested bean is currently in creation: Is there an unresolvable circular reference?
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.beforeSingletonCreation(DefaultSingletonBeanRegistry.java:347) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) ~[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.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) ~[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:285) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at io.travelnet.TravelNetApplication$$EnhancerBySpringCGLIB$$6dfc1a9a.mappingInfrastructure(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at org.springframework.data.neo4j.config.Neo4jConfiguration.neo4jTemplate(Neo4jConfiguration.java:136) ~[spring-data-neo4j-3.3.1.RELEASE.jar:na]
at io.travelnet.TravelNetApplication$$EnhancerBySpringCGLIB$$6dfc1a9a.CGLIB$neo4jTemplate$83(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at io.travelnet.TravelNetApplication$$EnhancerBySpringCGLIB$$6dfc1a9a$$FastClassBySpringCGLIB$$484acc9c.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 io.travelnet.TravelNetApplication$$EnhancerBySpringCGLIB$$6dfc1a9a.neo4jTemplate(<generated>) ~[spring-core-4.1.6.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_71]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_71]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_71]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_71]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 278 common frames omitted
这是我的依赖列表：
dependencies {
compile("org.springframework.boot:spring-boot-starter-batch")
compile("org.springframework.cloud:spring-cloud-starter-aws")
compile("org.springframework.cloud:spring-cloud-aws-autoconfigure")
compile("commons-io:commons-io:2.4")
compile("org.springframework.boot:spring-boot-starter-data-rest")
compile("org.springframework.boot:spring-boot-starter-data-jpa")
compile("org.springframework.boot:spring-boot-starter-web")
compile("org.springframework.data:spring-data-neo4j:3.3.1.RELEASE")
compile("org.springframework.data:spring-data-commons:1.10.1.RELEASE")
compile("com.graphaware.neo4j:timetree:2.1.7.28.20")
compile("com.graphaware.neo4j:common:2.1.7.28")
compile("org.codehaus.jackson:jackson-mapper-asl:1.9.13")
// these are needed to provide Neo4J web admin interface
compile("org.neo4j.app:neo4j-server:2.1.8")
compile("org.neo4j.app:neo4j-server:2.1.8:static-web")
runtime("com.sun.jersey:jersey-server:1.17.1")
runtime("com.sun.jersey:jersey-servlet:1.17.1")
compile("org.codehaus.groovy:groovy")
runtime("org.postgresql:postgresql:9.4-1201-jdbc41")
//providedRuntime("org.springframework.boot:spring-boot-starter-tomcat")
testCompile("org.springframework.boot:spring-boot-starter-test")
testCompile "org.spockframework:spock-core:0.7-groovy-2.0"
}
如果我发表评论compile("org.springframework.boot:spring-boot-starter-data-rest")，应用程序会按预期运行。
是否存在版本不匹配？
按照Michael的要求编辑添加主类的配置：
@Configuration
@EnableAutoConfiguration
@EnableAsync
@EnableScheduling
@SpringBootApplication
@EnableNeo4jRepositories(basePackages = "com.me.graph")
@EnableJpaRepositories(basePackages = "com.me.model")
@EnableTransactionManagement
class MyApplication extends Neo4jConfiguration implements CommandLineRunner {
MyApplication() {
setBasePackage("com.me.graph.domain");
}
@Bean(destroyMethod = "shutdown")
public GraphDatabaseService graphDatabaseService() {
return new GraphDatabaseFactory().newEmbeddedDatabase("graph/neo4j.db");
}
@Autowired
GraphDatabaseService db;
@Bean
public SingleTimeTree timeTree() {
return new SingleTimeTree(db)
}
@Autowired
LocalContainerEntityManagerFactoryBean entityManagerFactory;
@Override
@Bean(name = "transactionManager")
public PlatformTransactionManager neo4jTransactionManager(GraphDatabaseService db) throws Exception {
return new ChainedTransactionManager(new JpaTransactionManager(entityManagerFactory.getObject()),
new JtaTransactionManagerFactoryBean(graphDatabaseService()).getObject());
}
@Override
public void run(String... strings) throws Exception {
startNeo4jServer()
}
private static final Logger log = LoggerFactory.getLogger(MyApplication.class);
public void startNeo4jServer() {
// used for Neo4j browser
try {
WrappingNeoServerBootstrapper neoServerBootstrapper;
GraphDatabaseAPI api = (GraphDatabaseAPI) db;
ServerConfigurator config = new ServerConfigurator(api);
config.configuration()
.addProperty(Configurator.WEBSERVER_ADDRESS_PROPERTY_KEY, "127.0.0.1");
config.configuration()
.addProperty(Configurator.WEBSERVER_PORT_PROPERTY_KEY, "7474");
neoServerBootstrapper = new WrappingNeoServerBootstrapper(api, config);
neoServerBootstrapper.start();
} catch(Exception e) {
//handle appropriately
log.error("Exception when starting N4J")
}
// end of Neo4j browser config
}
static void main(String[] args) {
ApplicationContext ctx = SpringApplication.run(MyApplication.class, args);
log.info("MyApplication started.");
}
}