Json错误插件Neo4j

Question

从任何json库管理json对象时，在neo4j服务器中执行我的插件时出现错误。

    http://localhost:7474/ is ready.
{
  "message" : "org/json/simple/JSONArray",
  "exception" : "NoClassDefFoundError",
  "fullname" : "java.lang.NoClassDefFoundError",
  "stackTrace" : [ "com.geoblink.neonetwork.Network.getDrivingPolygon(Network.java:176)", "com.geoblink.neonetwork.GeoblinkRouting.getDrivingPolygon(GeoblinkRouting.java:25)", "java.lang.reflect.Method.invoke(Method.java:606)", "org.neo4j.server.plugins.PluginMethod.invoke(PluginMethod.java:61)", "org.neo4j.server.plugins.PluginManager.invoke(PluginManager.java:158)", "org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:312)", "org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:134)", "java.lang.reflect.Method.invoke(Method.java:606)", "org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)", "ch.qos.logback.access.servlet.TeeFilter.doFilter(TeeFilter.java:55)", "org.neo4j.server.rest.web.CollectUserAgentFilter.doFilter(CollectUserAgentFilter.java:69)", "java.lang.Thread.run(Thread.java:745)" ],
  "cause" : {
    "message" : "org.json.simple.JSONArray",
    "errors" : [ {
      "message" : "org.json.simple.JSONArray",
      "code" : "Neo.DatabaseError.General.UnknownFailure",
      "stackTrace" : "java.lang.ClassNotFoundException: org.json.simple.JSONArray\n\tat java.net.URLClassLoader$1.run(URLClassLoader.java:366)\n\tat java.net.URLClassLoader$1.run(URLClassLoader.java:355)\n\tat java.security.AccessController.doPrivileged(Native Method)\n\tat java.net.URLClassLoader.findClass(URLClassLoader.java:354)\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:425)\n\tat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:358)\n\tat com.geoblink.neonetwork.Network.getDrivingPolygon(Network.java:176)\n\tat com.geoblink.neonetwork.GeoblinkRouting.getDrivingPolygon(GeoblinkRouting.java:25)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.reflect.Method.invoke(Method.java:606)\n\tat org.neo4j.server.plugins.PluginMethod.invoke(PluginMethod.java:61)\n\tat org.neo4j.server.plugins.PluginManager.invoke(PluginManager.java:158)\n\tat org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:312)\n\tat org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:134)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.reflect.Method.invoke(Method.java:606)\n\tat com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)\n\tat com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)\n\tat com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)\n\tat org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)\n\tat com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)\n\tat com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)\n\tat com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)\n\tat com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)\n\tat com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)\n\tat com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)\n\tat com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)\n\tat com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:790)\n\tat org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:800)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)\n\tat ch.qos.logback.access.servlet.TeeFilter.doFilter(TeeFilter.java:55)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)\n\tat org.neo4j.server.rest.web.CollectUserAgentFilter.doFilter(CollectUserAgentFilter.java:69)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)\n\tat org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)\n\tat org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)\n\tat org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)\n\tat org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)\n\tat org.eclipse.jetty.server.Server.handle(Server.java:497)\n\tat org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)\n\tat org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)\n\tat org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)\n\tat java.lang.Thread.run(Thread.java:745)\n"
    } ],
    "exception" : "ClassNotFoundException",
    "fullname" : "java.lang.ClassNotFoundException",
    "stackTrace" : [ "java.net.URLClassLoader$1.run(URLClassLoader.java:366)", "java.net.URLClassLoader$1.run(URLClassLoader.java:355)", "java.security.AccessController.doPrivileged(Native Method)", "java.net.URLClassLoader.findClass(URLClassLoader.java:354)", "java.lang.ClassLoader.loadClass(ClassLoader.java:425)", "sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)", "java.lang.ClassLoader.loadClass(ClassLoader.java:358)", "com.geoblink.neonetwork.Network.getDrivingPolygon(Network.java:176)", "com.geoblink.neonetwork.GeoblinkRouting.getDrivingPolygon(GeoblinkRouting.java:25)", "java.lang.reflect.Method.invoke(Method.java:606)", "org.neo4j.server.plugins.PluginMethod.invoke(PluginMethod.java:61)", "org.neo4j.server.plugins.PluginManager.invoke(PluginManager.java:158)", "org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:312)", "org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:134)", "java.lang.reflect.Method.invoke(Method.java:606)", "org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)", "ch.qos.logback.access.servlet.TeeFilter.doFilter(TeeFilter.java:55)", "org.neo4j.server.rest.web.CollectUserAgentFilter.doFilter(CollectUserAgentFilter.java:69)", "java.lang.Thread.run(Thread.java:745)" ]
  },
  "errors" : [ {
    "message" : "org/json/simple/JSONArray",
    "code" : "Neo.DatabaseError.General.UnknownFailure",
    "stackTrace" : "java.lang.NoClassDefFoundError: org/json/simple/JSONArray\n\tat com.geoblink.neonetwork.Network.getDrivingPolygon(Network.java:176)\n\tat com.geoblink.neonetwork.GeoblinkRouting.getDrivingPolygon(GeoblinkRouting.java:25)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.reflect.Method.invoke(Method.java:606)\n\tat org.neo4j.server.plugins.PluginMethod.invoke(PluginMethod.java:61)\n\tat org.neo4j.server.plugins.PluginManager.invoke(PluginManager.java:158)\n\tat org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:312)\n\tat org.neo4j.server.rest.web.ExtensionService.invokeGraphDatabaseExtension(ExtensionService.java:134)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.reflect.Method.invoke(Method.java:606)\n\tat com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)\n\tat com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)\n\tat com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)\n\tat org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)\n\tat com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)\n\tat com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)\n\tat com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)\n\tat com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)\n\tat com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)\n\tat com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)\n\tat com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)\n\tat com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)\n\tat com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:790)\n\tat org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:800)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)\n\tat ch.qos.logback.access.servlet.TeeFilter.doFilter(TeeFilter.java:55)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)\n\tat org.neo4j.server.rest.web.CollectUserAgentFilter.doFilter(CollectUserAgentFilter.java:69)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)\n\tat org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)\n\tat org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)\n\tat org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)\n\tat org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)\n\tat org.eclipse.jetty.server.Server.handle(Server.java:497)\n\tat org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)\n\tat org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)\n\tat org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)\n\tat java.lang.Thread.run(Thread.java:745)\nCaused by: java.lang.ClassNotFoundException: org.json.simple.JSONArray\n\tat java.net.URLClassLoader$1.run(URLClassLoader.java:366)\n\tat java.net.URLClassLoader$1.run(URLClassLoader.java:355)\n\tat java.security.AccessController.doPrivileged(Native Method)\n\tat java.net.URLClassLoader.findClass(URLClassLoader.java:354)\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:425)\n\tat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)\n\tat java.lang.ClassLoader.loadClass(ClassLoader.java:358)\n\t... 55 more\n"
  } ]

我在函数中使用的句子如下：

JSONArray arrayNodesOut = new JSONArray();

JSONParser parse = new JSONParser();
Object obj = parse.parse(node.getProperty("geojson").toString());
arrayNodesOut.add(obj);

有人对这个问题有解决方案吗？...

非常感谢！

Answer 1

您的插件编译正确，因此表示您具有此依赖关系

<dependency>
    <groupId>org.json</groupId>
    <artifactId>json</artifactId>
    <version>20160212</version>
</dependency>

但是，当您部署插件时，它将引发ClassNotFoundException。 这意味着Neo4j类路径上不存在json jar。 将json.jar添加到Neo4j类路径中，或者为您的插件创建“胖罐”。 请参阅此处或此处 。

Answer 2

我发现了错误。

只有我将de库jars包含在neo4j lib目录中。