我正在使用 Grails 2.0.1 和 Neo4J 1.8，并且想在我的 spring 资源文件中实例化一个 Neo4j 数据库，如下所示：
import org.codehaus.groovy.grails.commons.ConfigurationHolder as CH;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
// Place your Spring DSL code here
beans = {
GraphDatabaseService db = getGraph();
enronService(com.fxpal.neo4j.EnronService) {
graph = db;
index = db.index()
.getNodeAutoIndexer()
.getAutoIndex();
}
}
protected GraphDatabaseService getGraph() {
String graphDBName = CH.config.enron.graphdb ?: "../databases/enrontest";
GraphDatabaseService db = new GraphDatabaseFactory().
newEmbeddedDatabaseBuilder( graphDBName ).
setConfig( GraphDatabaseSettings.node_keys_indexable, "emailID,address" ).
setConfig( GraphDatabaseSettings.node_auto_indexing, "true" ).
setConfig( GraphDatabaseSettings.dump_configuration, "true").
newGraphDatabase();
return db;
}
我的BuildConfig.groovy文件已mavenLocal()启用，并且路径中有 Lucene 3.5 核心库。
当我运行我的应用程序时，我会在 Neo4j 启动时收到以下消息：
| Running Grails application
Physical mem: 7987MB, Heap size: 455MB
| Error 2012-11-02 11:34:48,597 [pool-5-thread-1] ERROR spring.GrailsRuntimeConfigurator - [RuntimeConfiguration] Unable to load beans from resources.groovy
Message: Failed to transition org.neo4j.kernel.InternalAbstractGraphDatabase$DefaultKernelExtensionLoader@2116b32 from NONE to STOPPED
Line | Method
->> 388 | init in org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 82 | init in org.neo4j.kernel.lifecycle.LifeSupport
| 116 | start . . . . . . . . . . in ''
| 227 | run in org.neo4j.kernel.InternalAbstractGraphDatabase
| 79 | <init> . . . . . . . . . in org.neo4j.kernel.EmbeddedGraphDatabase
| 70 | newDatabase in org.neo4j.graphdb.factory.GraphDatabaseFactory$1
| 205 | newGraphDatabase . . . . in org.neo4j.graphdb.factory.GraphDatabaseBuilder
| 21 | getGraph in resources
| 8 | doCall . . . . . . . . . in resources$_run_closure1
| 736 | invokeBeanDefiningClosure in grails.spring.BeanBuilder
| 569 | beans . . . . . . . . . . in ''
| 303 | innerRun in java.util.concurrent.FutureTask$Sync
| 138 | run . . . . . . . . . . . in java.util.concurrent.FutureTask
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 908 | run . . . . . . . . . . . in ''
^ 619 | run in java.lang.Thread
Caused by NoClassDefFoundError: org/apache/lucene/util/Version
->> 113 | <clinit> in org.neo4j.index.impl.lucene.LuceneDataSource
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 72 | load in org.neo4j.index.lucene.LuceneIndexProvider
| 1171 | loadIndexImplementations in org.neo4j.kernel.InternalAbstractGraphDatabase$DefaultKernelExtensionLoader
| 1143 | init in ''
| 382 | init . . . . . . . . . . in org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance
| 82 | init in org.neo4j.kernel.lifecycle.LifeSupport
| 116 | start . . . . . . . . . . in ''
| 227 | run in org.neo4j.kernel.InternalAbstractGraphDatabase
| 79 | <init> . . . . . . . . . in org.neo4j.kernel.EmbeddedGraphDatabase
| 70 | newDatabase in org.neo4j.graphdb.factory.GraphDatabaseFactory$1
| 205 | newGraphDatabase . . . . in org.neo4j.graphdb.factory.GraphDatabaseBuilder
| 21 | getGraph in resources
| 8 | doCall . . . . . . . . . in resources$_run_closure1
| 736 | invokeBeanDefiningClosure in grails.spring.BeanBuilder
| 569 | beans . . . . . . . . . . in ''
| 303 | innerRun in java.util.concurrent.FutureTask$Sync
| 138 | run . . . . . . . . . . . in java.util.concurrent.FutureTask
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 908 | run . . . . . . . . . . . in ''
^ 619 | run in java.lang.Thread
Caused by ClassNotFoundException: org.apache.lucene.util.Version
->> 156 | findClass in org.codehaus.groovy.tools.RootLoader
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 307 | loadClass in java.lang.ClassLoader
| 128 | loadClass . . . . . . . . in org.codehaus.groovy.tools.RootLoader
| 248 | loadClass in java.lang.ClassLoader
| 113 | <clinit> . . . . . . . . in org.neo4j.index.impl.lucene.LuceneDataSource
| 72 | load in org.neo4j.index.lucene.LuceneIndexProvider
| 1171 | loadIndexImplementations in org.neo4j.kernel.InternalAbstractGraphDatabase$DefaultKernelExtensionLoader
| 1143 | init in ''
| 382 | init . . . . . . . . . . in org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance
| 82 | init in org.neo4j.kernel.lifecycle.LifeSupport
| 116 | start . . . . . . . . . . in ''
| 227 | run in org.neo4j.kernel.InternalAbstractGraphDatabase
| 79 | <init> . . . . . . . . . in org.neo4j.kernel.EmbeddedGraphDatabase
| 70 | newDatabase in org.neo4j.graphdb.factory.GraphDatabaseFactory$1
| 205 | newGraphDatabase . . . . in org.neo4j.graphdb.factory.GraphDatabaseBuilder
| 21 | getGraph in resources
| 8 | doCall . . . . . . . . . in resources$_run_closure1
| 736 | invokeBeanDefiningClosure in grails.spring.BeanBuilder
| 569 | beans . . . . . . . . . . in ''
| 303 | innerRun in java.util.concurrent.FutureTask$Sync
| 138 | run . . . . . . . . . . . in java.util.concurrent.FutureTask
| 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 908 | run . . . . . . . . . . . in ''
^ 619 | run in java.lang.Thread
昨天我已经能够从其他应用程序加载这个数据库。在寻找这个问题的解决方案时，我在 Neo4j Google 小组上遇到了这个讨论。这意味着这个问题应该已经在我的 Neo4j 版本（1.8，上周下载）中得到解决。接下来我应该尝试什么？
更新
BuildConfig.groovy。主要是库存；mavenLocal()未注释；休眠删除。
grails.servlet.version = "2.5" // Change depending on target container compliance (2.5 or 3.0)
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.target.level = 1.6
grails.project.source.level = 1.6
//grails.project.war.file = "target/${appName}-${appVersion}.war"
grails.project.dependency.resolution = {
// inherit Grails' default dependencies
inherits("global") {
// uncomment to disable ehcache
// excludes 'ehcache'
}
log "warn" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
checksums true // Whether to verify checksums on resolve
repositories {
inherits true // Whether to inherit repository definitions from plugins
grailsPlugins()
grailsHome()
grailsCentral()
mavenCentral()
// uncomment these to enable remote dependency resolution from public Maven repositories
//mavenCentral()
mavenLocal()
//mavenRepo "http://snapshots.repository.codehaus.org"
//mavenRepo "http://repository.codehaus.org"
//mavenRepo "http://download.java.net/maven/2/"
//mavenRepo "http://repository.jboss.com/maven2/"
}
dependencies {
// specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes eg.
// runtime 'mysql:mysql-connector-java:5.1.16'
}
plugins {
// runtime ":hibernate:$grailsVersion"
runtime ":jquery:1.7.1"
runtime ":resources:1.1.6"
// Uncomment these (or add new ones) to enable additional resources capabilities
//runtime ":zipped-resources:1.0"
//runtime ":cached-resources:1.0"
//runtime ":yui-minify-resources:0.1.4"
build ":tomcat:$grailsVersion"
}
}