我尝试探索如何将neo4j与django项目集成，并在我的django项目中启动管理页面，并依赖于neo4django。但似乎它需要neo4j服务器中的GremlinPlugin扩展。
使用this documentation我尝试为GremlinPlugin构建jar文件。
但是第一步已经出现错误，因为缺少许可证标题：
alx@x1:~/Downloads/gremlin-plugin$ mvn -e clean package
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building neo4j-gremlin-plugin 2.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ neo4j-gremlin-plugin ---
[INFO]
[INFO] --- license-maven-plugin:3:check (check-licenses) @ neo4j-gremlin-plugin ---
[INFO] Checking licenses...
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/site/site.xml
[INFO] [INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/java/org/neo4j/server/webadmin/rest/GremlinConsoleServiceTest.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/java/org/neo4j/server/webadmin/rest/ConfigureEnabledManagementConsolesGremlinTest.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/assembly/docs-assembly.xml
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/assembly/server-plugin.xml
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/rest/repr/GremlinObjectToRepresentationConverter.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/rest/repr/GremlinTableRepresentation.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/rest/repr/GremlinMapRepresentation.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/plugin/gremlin/GremlinPlugin.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/plugin/gremlin/CountingEngineReplacementDecision.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/plugin/gremlin/EngineReplacementDecision.java
Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/java/org/neo4j/server/plugin/gremlin/GremlinPluginTest.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/plugin/gremlin/ScriptCountingEngineReplacementDecision.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/webadmin/console/Neo4jGroovyImports.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/webadmin/console/GremlinSessionCreator.java
[INFO] [INFO] [INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/resources/graphml.xml
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/java/org/neo4j/server/webadmin/console/GremlinSessionTest.java
Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/webadmin/console/GremlinWebConsole.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/webadmin/console/GremlinResultHook.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/main/java/org/neo4j/server/webadmin/console/GremlinSession.java
Missing header in: /home/alx/Downloads/gremlin-plugin/src/test/java/org/neo4j/server/plugin/gremlin/GremlinPluginFunctionalTest.java
[INFO] Missing header in: /home/alx/Downloads/gremlin-plugin/src/data/graphml1.xml
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.864s
[INFO] Finished at: Tue Jan 14 21:58:25 MSK 2014
[INFO] Final Memory: 13M/302M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.neo4j.build.plugins:license-maven-plugin:3:check (check-licenses) on project neo4j-gremlin-plugin: Some files do not have the expected license header -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.neo4j.build.plugins:license-maven-plugin:3:check (check-licenses) on project neo4j-gremlin-plugin: Some files do not have the expected license header
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
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 org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: Some files do not have the expected license header
at com.google.code.mojo.license.LicenseCheckMojo.execute(LicenseCheckMojo.java:64)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
我使用版本3.0.4的maven：
alx@x1:~/Downloads/gremlin-plugin$ mvn -v
Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.7.0_25, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-7-openjdk-amd64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.8.0-35-generic", arch: "amd64", family: "unix"
有没有人知道导致这个问题的原因以及我该如何解决？