Question

以下是我在PersistenceContext.java中的代码

package yuzhaoLiu.project.testNeo4j;

import org.neo4j.ogm.config.ClasspathConfigurationSource;
import org.neo4j.ogm.config.ConfigurationSource;
import org.neo4j.ogm.config.FileConfigurationSource;
import org.neo4j.ogm.session.Session;
import org.neo4j.ogm.session.SessionFactory;
import org.springframework.context.annotation.*;
import org.springframework.data.neo4j.config.Neo4jConfiguration;
import org.springframework.data.neo4j.repository.config.EnableNeo4jRepositories;
import org.springframework.data.neo4j.transaction.Neo4jTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableNeo4jRepositories("yuzhaoLiu.project.repository")
@EnableTransactionManagement
@ComponentScan("yuzhaoLiu.project")
public class PersistenceContext extends Neo4jConfiguration {

    @Bean
    public SessionFactory getSessionFactory() {
        return new SessionFactory(getConfiguration(),"yuzhaoLiu.project.entity");
    }

    @Bean
    @Scope(value = "session", proxyMode = ScopedProxyMode.TARGET_CLASS)
    public Session getSession() throws Exception {
        return super.getSession();
    }

    //The purpose of this method is that I want to change the path of 
    //neo4j's configuration file called ogm.properties.
    @Bean
    public org.neo4j.ogm.config.Configuration getConfiguration() {
        ConfigurationSource props = new ClasspathConfigurationSource("neo4j/ogm.properties");
        org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration.Builder(props).build();
        return configuration ;
    }

}

然后我运行Junit测试它会给我一个例外，如下所示。

java.lang.IllegalStateException: Failed to load ApplicationContext

    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'neo4jMappingContext' defined in yuzhaoLiu.project.testNeo4j.PersistenceContext: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.neo4j.mapping.Neo4jMappingContext]: Factory method 'neo4jMappingContext' threw exception; nested exception is java.lang.NoSuchMethodError: org.neo4j.ogm.session.SessionFactory.metaData()Lorg/neo4j/ogm/MetaData;
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
    at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
    at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
    ... 24 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.neo4j.mapping.Neo4jMappingContext]: Factory method 'neo4jMappingContext' threw exception; nested exception is java.lang.NoSuchMethodError: org.neo4j.ogm.session.SessionFactory.metaData()Lorg/neo4j/ogm/MetaData;
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
    ... 41 more
Caused by: java.lang.NoSuchMethodError: org.neo4j.ogm.session.SessionFactory.metaData()Lorg/neo4j/ogm/MetaData;
    at org.springframework.data.neo4j.config.Neo4jConfiguration.neo4jMappingContext(Neo4jConfiguration.java:66)
    at yuzhaoLiu.project.testNeo4j.PersistenceContext$$EnhancerBySpringCGLIB$$7c8d8ebc.CGLIB$neo4jMappingContext$7(<generated>)
    at yuzhaoLiu.project.testNeo4j.PersistenceContext$$EnhancerBySpringCGLIB$$7c8d8ebc$$FastClassBySpringCGLIB$$f976525a.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
    at yuzhaoLiu.project.testNeo4j.PersistenceContext$$EnhancerBySpringCGLIB$$7c8d8ebc.neo4jMappingContext(<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:498)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
    ... 42 more

以下是我的项目结构如下图。 my project's structure 这个方法的目的是我想改变名为ogm.properties的neo4j配置文件的路径。我已经阅读了一个文档，关于'使用属性文件'的链接是https://neo4j.com/docs/ogm-manual/current/reference/。然后有一个错误，我无法解决它。如果你帮我解决它，我将不胜感激。

Answer 1

您正在混合与OGM相关的依赖项的版本：

<dependency>
   <groupId>org.springframework.data</groupId>
   <artifactId>spring-data-neo4j</artifactId>
   <version>4.1.0.RELEASE</version>
</dependency>

将引入OGM 2.0.1。查看compatibility matrix以了解版本如何相互影响。

您还明确地将OGM版本声明为3.0.0。这将导致使用lib的行为在某种程度上是不可预测的。（这是可以预测的，但超出了这个答案）

因此，如果不需要保留这样一个旧版本，您应该将spring-data-neo4j依赖项更新为当前类似5.0.3.RELEASE的内容。这也将引入OGM 3.0.3。

java.lang.NoSuchMethodError：org.neo4j.ogm.session.SessionFactory.metaData（）Lorg / neo4j / ogm / MetaData;

1 个答案: