我正在尝试使用Maven、Jenkins、SVN和Nexus搭建一个环境。我通过SVN向Jenkins添加了作业，但是由于Maven错误，Jenkins无法构建这些作业。
以下是错误日志：
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building imagetools 1.0
[INFO] ------------------------------------------------------------------------
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.1/maven-dependency-plugin-2.1.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 21.756s
[INFO] Finished at: Mon Apr 22 11:43:05 CEST 2013
[INFO] Final Memory: 7M/152M
[INFO] ------------------------------------------------------------------------
[JENKINS] Archiving C:\Users\franzm\.jenkins\jobs\ImageTools\workspace\pom.xml to C:\Users\franzm\.jenkins\jobs\ImageTools\modules\com.ee$imagetools\builds\2013-04-22_11-42-40\archive\com.ee\imagetools\1.0\imagetools-1.0.pom
Warte bis Jenkins die Datensammlung abgeschlossen hat
mavenExecutionResult exceptions not empty
message : Plugin org.apache.maven.plugins:maven-dependency-plugin:2.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
cause : Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
Stack trace :
org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-dependency-plugin:2.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:129)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:142)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getMojoDescriptor(DefaultMavenPluginManager.java:261)
at org.apache.maven.plugin.DefaultBuildPluginManager.getMojoDescriptor(DefaultBuildPluginManager.java:185)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecution(DefaultLifecycleExecutionPlanCalculator.java:152)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecutions(DefaultLifecycleExecutionPlanCalculator.java:139)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.calculateExecutionPlan(DefaultLifecycleExecutionPlanCalculator.java:116)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.calculateExecutionPlan(DefaultLifecycleExecutionPlanCalculator.java:129)
at org.apache.maven.lifecycle.internal.BuilderCommon.resolveBuildPlan(BuilderCommon.java:92)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
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.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)
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:601)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:100)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:66)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:296)
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:186)
at org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:279)
at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:115)
... 33 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Could not transfer artifact org.apache.maven.plugins:maven-dependency-plugin:pom:2.1 from/to central (http://repo.maven.apache.org/maven2): Connection to http://repo.maven.apache.org refused
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:538)
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:216)
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:193)
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:281)
... 36 more
Caused by: org.sonatype.aether.transfer.ArtifactTransferException: Could not transfer artifact org.apache.maven.plugins:maven-dependency-plugin:pom:2.1 from/to central (http://repo.maven.apache.org/maven2): Connection to http://repo.maven.apache.org refused
at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRepositoryConnector.java:951)
at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$4.wrap(WagonRepositoryConnector.java:941)
at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:669)
at org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:60)
... 3 more
Caused by: org.apache.maven.wagon.TransferFailedException: Connection to http://repo.maven.apache.org refused
at org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.resourceExists(AbstractHttpClientWagon.java:597)
at org.sonatype.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:577)
... 4 more
Caused by: org.apache.maven.wagon.providers.http.httpclient.conn.HttpHostConnectException: Connection to http://repo.maven.apache.org refused
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:573)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:425)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.execute(AbstractHttpClientWagon.java:674)
at org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.resourceExists(AbstractHttpClientWagon.java:593)
... 5 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at org.apache.maven.wagon.providers.http.httpclient.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:123)
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:148)
... 13 more
channel stopped
Finished: FAILURE
如果我通过命令行使用Maven构建Jenkins，一切都能正常工作。它会从Nexus下载所有依赖项。我还需要添加一个代理到Maven。
我下载了配置文件管理插件来为Maven添加自定义的settings.xml：
<mirror>
<id>nexus</id>
<url>http://mynexusadress.com:6060/nexus/content/groups/public</url> <mirrorOf>central</mirrorOf>
代理访问是在Nexus配置文件中进行配置的。 （如上所述，在本地使用Maven可以正常工作，它会从Nexus下载所有依赖项并将构建的jar上传到其中）