NoClassDefFoundError com/google/inject/Injector运行时简单Neo4J测试

我试图启动并运行编写嵌入式Neo4J Java 1.8应用程序。我按照开发商的手册和尝试运行一个简单的测试来初始化本地测试DB：NoClassDefFoundError com/google/inject/Injector运行时简单Neo4J测试

@Test 
public void initNeo4J() { 
    graphDb = new TestGraphDatabaseFactory().newImpermanentDatabase(); 
}

我看到用的根本原因是运行时异常：

Caused by: java.lang.NoClassDefFoundError: com/google/inject/Injector

如果我将Google Guice添加到类路径中，此错误消失并且一切正常。但是，我没有看到这种依赖关系记录在任何地方，所以我觉得我错过了什么或做错了什么。这只是一个无证的依赖关系，还是我错过了一个关键的依赖关系，将注入器拉入？这里是我当前的依赖关系：

<dependency> 
    <groupId>org.neo4j</groupId> 
    <artifactId>neo4j</artifactId> 
    <version>3.0.0</version> 
</dependency> 
<dependency> 
    <groupId>org.neo4j</groupId> 
    <artifactId>neo4j-kernel</artifactId> 
    <version>3.0.0</version> 
    <scope>test</scope> 
    <type>test-jar</type> 
</dependency> 
<dependency> 
    <groupId>org.neo4j</groupId> 
    <artifactId>neo4j-io</artifactId> 
    <version>3.0.0</version> 
    <scope>test</scope> 
    <type>test-jar</type> 
</dependency>

编辑，下面是完整的堆栈跟踪：

java.lang.RuntimeException: Error starting org.neo4j.test.TestGraphDatabaseFactory$1$1, C:\project\socialalpha\socialalpha-spark\neo4j-dev\target\test-data\impermanent-db 
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:144) 
    at org.neo4j.kernel.impl.factory.CommunityFacadeFactory.newFacade(CommunityFacadeFactory.java:40) 
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:108) 
    at org.neo4j.test.TestGraphDatabaseFactory$1.newDatabase(TestGraphDatabaseFactory.java:232) 
    at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:183) 
    at org.neo4j.test.TestGraphDatabaseFactory.newImpermanentDatabase(TestGraphDatabaseFactory.java:60) 
    at com.sa.TestNeo4J.initNeo4J(TestNeo4J.java:43) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86) 
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:514) 
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:215) 
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:142) 
    at org.testng.internal.Invoker.invokeBeforeGroupsConfigurations(Invoker.java:857) 
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:581) 
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820) 
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128) 
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129) 
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112) 
    at org.testng.TestRunner.privateRun(TestRunner.java:782) 
    at org.testng.TestRunner.run(TestRunner.java:632) 
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:366) 
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361) 
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319) 
    at org.testng.SuiteRunner.run(SuiteRunner.java:268) 
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) 
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) 
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244) 
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1169) 
    at org.testng.TestNG.run(TestNG.java:1064) 
    at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:126) 
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:137) 
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:58) 
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component '[email protected]' failed to initialize. Please see attached cause exception. 
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:416) 
    at org.neo4j.kernel.lifecycle.LifeSupport.init(LifeSupport.java:62) 
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:98) 
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:140) 
    ... 34 more 
Caused by: java.lang.NoClassDefFoundError: com/google/inject/Injector 
    at java.lang.Class.getDeclaredMethods0(Native Method) 
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) 
    at java.lang.Class.getDeclaredMethod(Class.java:2128) 
    at org.neo4j.kernel.impl.util.DebugUtil.trackTest(DebugUtil.java:300) 
    at org.neo4j.kernel.impl.util.Neo4jJobScheduler.init(Neo4jJobScheduler.java:46) 
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:406) 
    ... 37 more 
Caused by: java.lang.ClassNotFoundException: com.google.inject.Injector 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    ... 43 more

来源

2016-06-09 Matt Holtzman

可以共享完整的堆栈跟踪？ –

我想知道你是否正确使用maven。 [Maven不会自动建立一个可执行的jar]（http://stackoverflow.com/questions/8425453/maven-build-with-dependencies）。 – DavidS

后来我意识到，这是由于在classpath其他冲突，最有可能的一个旧/新谷歌Guava版本。

来源

2016-08-12 18:50:27

该类com.google.inject.Injector是位于guice库。

要解决我添加以下的依赖错误：

<dependency> 
    <groupId>com.google.inject</groupId> 
    <artifactId>guice</artifactId> 
    <version>4.1.0</version> 
    <classifier>no_aop</classifier> 
    <scope>test</scope> 
</dependency>

来源

2016-11-28 23:41:05

NoClassDefFoundError com/google/inject/Injector运行时简单Neo4J测试

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