Question

感谢您阅读我的问题，请您帮我解决这个问题。在第一次，它会没问题，但是当它完成时，我做同样的事情，它发生了这个例外：

org.neo4j.graphdb.TransactionFailureException: Database is currently not available. No blocking components
at org.neo4j.kernel.InternalAbstractGraphDatabase.beginTx(InternalAbstractGraphDatabase.java:942)
at org.neo4j.kernel.TransactionBuilderImpl.begin(TransactionBuilderImpl.java:43)
at org.neo4j.kernel.InternalAbstractGraphDatabase.beginTx(InternalAbstractGraphDatabase.java:935)
at com.myapplication.dao.DataOperation.getUser(DataOperation.java:77)
at com.myapplication.dao.DataOperation.createRelationShip(DataOperation.java:205)
at com.myapplication.business.UploadData.upload(UploadData.java:29)
at com.myapplication.servlet.UploadServlet.doPost(UploadServlet.java:96)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

但我改变数据库的所有操作都是像demo

那样的转换

try (Transaction tx = graphDB.beginTx()) {
        //do something
        tx.success();
    }

如何使用像MySQL连接这样的Neo4j连接？

我的环境是Java 7中的Eclipse + Tomcat 7.0 这是数据库日志https://www.dropbox.com/s/a7858mywidbvr03/messages.log的链接非常感谢你

如何在Neo4j中解决这个异常？

0 个答案: