Spring Data Neo4j RestGraphDatabase throws NullPointerException

Question

Попытка установить Neo4J с помощью конфигурации базы данных удаленного REST. У меня есть локальная встроенная настройка, чтобы работать нормально. Единственное изменение - это настройка GraphDatabaseService.

Я использую данные Spring Neo4J 3.2.1 и Neo4J 2.1.4.

Идеи?

Config:

package com.toyfiles.configuration; 

import org.neo4j.graphdb.GraphDatabaseService; 
import org.neo4j.rest.graphdb.RestGraphDatabase; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.context.annotation.Profile; 
import org.springframework.data.neo4j.config.EnableNeo4jRepositories; 
import org.springframework.data.neo4j.config.Neo4jConfiguration; 
import org.springframework.transaction.annotation.EnableTransactionManagement; 

@Configuration 
@Profile("RestDBServer") 
@EnableTransactionManagement 
@EnableNeo4jRepositories(basePackages = "com.toyfiles.dataservices") 
public class RestDBConfig extends Neo4jConfiguration { 

    public RestDBConfig() { 
     setBasePackage("com.toyfiles"); 
    } 

    @Bean 
    public GraphDatabaseService graphDatabaseService() { 
     return new RestGraphDatabase("http://localhost:7474/db/data"); 
    } 
} 

Вот за исключением

Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.data.neo4j.core.GraphDatabase org.springframework.data.neo4j.config.Neo4jConfiguration.graphDatabase()] threw exception; nested exception is java.lang.NullPointerException 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:188) 
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:586) 
... 136 more 
Caused by: java.lang.NullPointerException 
at org.neo4j.cypher.ExecutionEngine.createCompiler(ExecutionEngine.scala:149) 
at org.neo4j.cypher.ExecutionEngine.<init>(ExecutionEngine.scala:48) 
at org.neo4j.cypher.javacompat.ExecutionEngine.createInnerEngine(ExecutionEngine.java:59) 
at org.neo4j.cypher.javacompat.ExecutionEngine.<init>(ExecutionEngine.java:43) 
at org.springframework.data.neo4j.support.query.CypherQueryEngineImpl.<init>(CypherQueryEngineImpl.java:41) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.createCypherQueryEngine(DelegatingGraphDatabase.java:219) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.queryEngine(DelegatingGraphDatabase.java:208) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.queryEngine(DelegatingGraphDatabase.java:215) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.queryEngine(DelegatingGraphDatabase.java:201) 
at org.springframework.data.neo4j.support.schema.SchemaIndexProvider.<init>(SchemaIndexProvider.java:36) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.<init>(DelegatingGraphDatabase.java:72) 
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.<init>(DelegatingGraphDatabase.java:67) 
at org.springframework.data.neo4j.config.Neo4jConfiguration.graphDatabase(Neo4jConfiguration.java:259) 
at com.toyfiles.configuration.RestDBConfig$$EnhancerBySpringCGLIB$$1110ba63.CGLIB$graphDatabase$27(<generated>) 
at com.toyfiles.configuration.RestDBConfig$$EnhancerBySpringCGLIB$$1110ba63$$FastClassBySpringCGLIB$$679e9620.invoke(<generated>) 
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) 
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312) 
at com.toyfiles.configuration.RestDBConfig$$EnhancerBySpringCGLIB$$1110ba63.graphDatabase(<generated>) 
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:483) 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166) 
... 137 more 

Answer 1

Иногда размещение искры идеи.

Мне нужно было использовать SpringRestGraphDatabase, а не только RestGraphDatabase.