Question

我正在使用Spring和Neo4j制作应用程序，但每当我尝试启动应用程序时，我都会遇到此错误。我确信没有其他程序在运行。这是错误

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphDatabaseService': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.neo4j.kernel.EmbeddedGraphDatabase]: Constructor threw exception; nested exception is java.lang.IllegalStateException: Unable to lock store [C:\Users\Anthony\Documents\tomcat7\apache-tomcat-7.0.40\bin\target\config-test\neostore], this is usually a result of some other Neo4j kernel running using the same store.
    org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1045)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:949)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    java.lang.Thread.run(Thread.java:722)

Answer 1

Spring正在尝试在启动期间初始化GraphDatabaseService。 C:\Users\Anthony\Documents\tomcat7\apache-tomcat-7.0.40\bin\target\config-test\neostore是配置的默认位置。将neo4j db放在tomcat文件夹结构之外的目录中是有意义的。我建议你找到初始化GDB的弹簧配置文件，并将其改为如下所示

<neo4j:config storeDirectory="C:\home\neo4j-db"/>

Answer 2

正如异常所说，当Neo4j的另一个实例使用同一个商店时，通常会抛出此异常。通过施工，你不能有多个。因此，要么您有另一个正在使用该存储的进程，要么您的存储可能在崩溃（或意外关闭）后保持锁定状态。

如果您确定没有其他进程正在访问存储，请尝试在启动应用程序之前手动删除NEO4j_HOME / data / graph.db / lock和NEO4j_HOME / data / graph.db / store_lock文件。

无法锁定存储这通常是使用同一存储运行的其他一些Neo4j内核的结果

2 个答案: