java 运行“mvn package”命令时Maven不工作
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Maven not working when 'mvn package' command is run
提问by Vishal Suri
I am working on a Spring mvc using Eclipse. Until now I was using ant to create war file. But now I switched to Maven. I have copied Maven 3.3 on my system and set system variables for Maven. It works fine, when I run Maven following command from command prompt:
我正在使用 Eclipse 处理 Spring mvc。到目前为止，我一直在使用 ant 来创建War文件。但现在我切换到 Maven。我已经在我的系统上复制了 Maven 3.3 并为 Maven 设置了系统变量。当我从命令提示符运行 Maven 以下命令时，它工作正常：
mvn -version
I have created a pom.xml file in my Spring mvc app's root directory. I run Maven through command prompt, not through Eclipse. When I run following command:
我在 Spring mvc 应用程序的根目录中创建了一个 pom.xml 文件。我通过命令提示符运行 Maven，而不是通过 Eclipse。当我运行以下命令时：
mvn -X package
it shows following errors:
它显示以下错误：
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 22.590 s
[INFO] Finished at: 2015-06-16T12:52:16+05:30
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.mav
en.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (https://repo.maven.apache.
org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] failed: Connection timed out: connect -> [Help 1]
org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to
read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:117)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:179)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getMojoDescriptor(DefaultMavenPluginManager.java:298)
at org.apache.maven.plugin.DefaultBuildPluginManager.getMojoDescriptor(DefaultBuildPluginManager.java:241)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecution(DefaultLifecycleExecutionPlanCalculator.java:169)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.setupMojoExecutions(DefaultLifecycleExecutionPlanCalculator.java:155)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.calculateExecutionPlan(DefaultLifecycleExecutionPlanCalculator.java:131)
at org.apache.maven.lifecycle.internal.DefaultLifecycleExecutionPlanCalculator.calculateExecutionPlan(DefaultLifecycleExecutionPlanCalculator.java:145)
at org.apache.maven.lifecycle.internal.builder.BuilderCommon.resolveBuildPlan(BuilderCommon.java:96)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:109)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
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:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:302)
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:218)
at org.eclipse.aether.internal.impl.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:287)
at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:103)
... 26 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central
(https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] failed: Connection timed out: connect
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:287)
... 29 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (htt
ps://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] failed: Connection timed out: connect
at org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:43)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:355)
at org.eclipse.aether.util.concurrency.RunnableErrorForwarder.run(RunnableErrorForwarder.java:67)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:581)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:249)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:520)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)
... 32 more
Caused by: org.apache.maven.wagon.TransferFailedException: Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] failed: Connection timed out: connec
t
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:1066)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:960)
at org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)
at org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
at org.eclipse.aether.transport.wagon.WagonTransporter$GetTaskRunner.run(WagonTransporter.java:560)
at org.eclipse.aether.transport.wagon.WagonTransporter.execute(WagonTransporter.java:427)
at org.eclipse.aether.transport.wagon.WagonTransporter.get(WagonTransporter.java:404)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:447)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:350)
... 37 more
Caused by: org.apache.maven.wagon.providers.http.httpclient.conn.HttpHostConnectException: Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] fail
ed: Connection timed out: connect
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:140)
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:318)
at org.apache.maven.wagon.providers.http.httpclient.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)
at org.apache.maven.wagon.providers.http.httpclient.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
at org.apache.maven.wagon.providers.http.httpclient.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
at org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec.execute(RetryExec.java:86)
at org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.maven.wagon.providers.http.httpclient.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.execute(AbstractHttpClientWagon.java:832)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:983)
... 46 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
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:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at org.apache.maven.wagon.providers.http.httpclient.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:239)
at org.apache.maven.wagon.providers.http.httpclient.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:123)
... 56 more
It says connection timed out, but my internet is running fine.
它说连接超时，但我的互联网运行良好。
回答by Nathan
199.27.79.215is not the right IP address for repo.maven.apache.org. The right IP address is 23.235.40.215(as of 9/10/2015 from my desktop). If I open a browser to https://199.27.79.215/, I get a web page which says unknown domain: 199.27.79.215.
199.27.79.215不是 的正确 IP 地址repo.maven.apache.org。正确的 IP 地址是23.235.40.215（截至 2015 年 9 月 10 日从我的桌面）。如果我打开浏览器到https://199.27.79.215/，我会看到一个网页，上面写着unknown domain: 199.27.79.215.
The problem is that Maven is being run in an environment without a direct connection to the Internet. Maven needs to be configured to go through the HTTP Proxy. The Maven documentation for this is found here. Here's the information...
问题是 Maven 是在没有直接连接到 Internet 的环境中运行的。Maven 需要配置为通过 HTTP 代理。可在此处找到 Maven 文档。这是信息...
Configuring a proxy
You can configure a proxy to use for some or all of your HTTP requests with Maven. The username and password are only required if your proxy requires basic authentication (note that later releases may support storing your passwords in a secured keystore - in the mean time, please ensure your settings.xml file (usually ${user.home}/.m2/settings.xml) is secured with permissions appropriate for your operating system).
The nonProxyHosts setting accepts wild cards, and each host not to proxy is separated by the | character. This matches the JDK configuration equivalent.
<settings> . . <proxies> <proxy> <id>example-proxy</id> <active>true</active> <protocol>http</protocol> <host>proxy.example.com</host> <port>8080</port> <username>proxyuser</username> <password>somepassword</password> <nonProxyHosts>www.google.com|*.example.com</nonProxyHosts> </proxy> </proxies> . . </settings>
配置代理
您可以通过 Maven 配置代理以用于部分或全部 HTTP 请求。仅当您的代理需要基本身份验证时才需要用户名和密码（请注意，以后的版本可能支持将您的密码存储在安全的密钥库中 - 同时，请确保您的 settings.xml 文件（通常为 ${user.home}/. m2/settings.xml) 使用适用于您的操作系统的权限进行保护）。
nonProxyHosts 设置接受通配符，每个不代理的主机由 | 分隔。特点。这与 JDK 配置等效。
<settings> . . <proxies> <proxy> <id>example-proxy</id> <active>true</active> <protocol>http</protocol> <host>proxy.example.com</host> <port>8080</port> <username>proxyuser</username> <password>somepassword</password> <nonProxyHosts>www.google.com|*.example.com</nonProxyHosts> </proxy> </proxies> . . </settings>
回答by Ian MacLeish
I found that setting my MAVEN_OPTS environment variable worked. Apparently JDK7 has some issues with it: https://issues.apache.org/jira/browse/MNG-5162
我发现设置我的 MAVEN_OPTS 环境变量有效。显然 JDK7 有一些问题：https: //issues.apache.org/jira/browse/MNG-5162
export MAVEN_OPTS="-Djava.net.preferIPv4Stack=true"
回答by Juned Ahsan
You are using the repository which is available at
您正在使用可在以下位置获得的存储库
repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215]
and as the error says, maven is not able to reach that URL:
正如错误所说，maven 无法访问该 URL：
org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/199.27.79.215] failed: Connection timed out: connect -> [Help 1]
Check your internet connection and make sure you are able to reach the repo. You can test it by trying to hit the URL in browser or by using curl
检查您的互联网连接并确保您能够访问该存储库。您可以通过尝试在浏览器中点击 URL 或使用 curl 来测试它
