Neo4j Spatial dependencies NoClassDefFoundError

[Sumit Shah]

Hi,

I am new to Neo4j Spatial and trying to play with it. I have built neo4j spatial by cloning the git repo and running 'mvn clean install'. In my Java project I am pointing to this built jar and I am trying to import Washington DC's OSM file using the code below:

OSMImporter importer = new OSMImporter ("WashingtonDC");

Map<String, String> config = new HashMap<String, String>();

config.put("neostore.nodestore.db.mapped_memory", "256M" );

config.put("dump_configuration", "true");

config.put("use_memory_mapped_buffers", "true");

String dir = "/dev/neo4j-spatial/db";

BatchInserter batchInserter = BatchInserters.inserter(dir,config);

importer.importFile(batchInserter, "/downloads/dc-baltimore.osm",false);

batchInserter.shutdown();

GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(dir);

importer.reIndex(db,10000);

db.shutdown();

However, upon running this example I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/geotools/referencing/datum/DefaultEllipsoid

at org.neo4j.gis.spatial.osm.OSMImporter.<clinit>(OSMImporter.java:68)

at com.paramiq.neo4j.spatial.SpatialOSMImport.main(SpatialOSMImport.java:22)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

Caused by: java.lang.ClassNotFoundException: org.geotools.referencing.datum.DefaultEllipsoid

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

... 7 more

I am guessing a dependency issue. I would appreciate any help.

Thanks

Sumit

[Peter Neubauer]

Sumit,
Are you using maven? In that case what does

mvn dependency:tree

Look like?

/peter

(snt)-[:frm]->(phn)

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[Craig Taverner]

Looks like some geotools libraries are missing. If you use maven, the dependencies should be sorted out for you. But if not, you can also look at the every end of the README at https://github.com/neo4j-contrib/spatial for some hints at how to get to the dependencies manually.