插件org.apache.maven.plugins：maven-clean-plugin：2.5或其中一个依赖项无法解析

时间：2015-05-29 06:34:53

标签： maven maven-2 maven-3 maven-plugin maven-release-plugin

我已经在我的机器上安装了maven。我已正确设置class-path和maven主文件夹。每次执行mvn clean install时，它都会让我异常。我也尝试删除.m2文件夹，但结果相同。

  • mvn -version 输出

    Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T19:57:37+08:00)
Maven home: C:\maven-3
Java version: 1.7.0_45, vendor: Oracle Corporation
Java home: D:\jdk170_45\jre
Default locale: en_US, platform encoding: MS950
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"

  • 记录 mvn -X clean install 

        Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T19:57:37+08:00)
    Maven home: C:\maven-3
    Java version: 1.7.0_45, vendor: Oracle Corporation
    Java home: D:\jdk170_45\jre
    Default locale: en_US, platform encoding: MS950
    OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"
    [DEBUG] Created new class realm maven.api
    [DEBUG] Importing foreign packages into class realm maven.api
    [DEBUG]   Imported: javax.enterprise.inject.* < plexus.core
    [DEBUG]   Imported: javax.enterprise.util.* < plexus.core
    [DEBUG]   Imported: javax.inject.* < plexus.core
    [DEBUG]   Imported: org.apache.maven.* < plexus.core
    [DEBUG]   Imported: org.apache.maven.artifact < plexus.core
    [DEBUG]   Imported: org.apache.maven.classrealm < plexus.core
    [DEBUG]   Imported: org.apache.maven.cli < plexus.core
    [DEBUG]   Imported: org.apache.maven.configuration < plexus.core
    [DEBUG]   Imported: org.apache.maven.exception < plexus.core
    [DEBUG]   Imported: org.apache.maven.execution < plexus.core
    [DEBUG]   Imported: org.apache.maven.execution.scope < plexus.core
    [DEBUG]   Imported: org.apache.maven.lifecycle < plexus.core
    [DEBUG]   Imported: org.apache.maven.model < plexus.core
    [DEBUG]   Imported: org.apache.maven.monitor < plexus.core
    [DEBUG]   Imported: org.apache.maven.plugin < plexus.core
    [DEBUG]   Imported: org.apache.maven.profiles < plexus.core
    [DEBUG]   Imported: org.apache.maven.project < plexus.core
    [DEBUG]   Imported: org.apache.maven.reporting < plexus.core
    [DEBUG]   Imported: org.apache.maven.repository < plexus.core
    [DEBUG]   Imported: org.apache.maven.rtinfo < plexus.core
    [DEBUG]   Imported: org.apache.maven.settings < plexus.core
    [DEBUG]   Imported: org.apache.maven.toolchain < plexus.core
    [DEBUG]   Imported: org.apache.maven.usability < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.* < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.authentication < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.authorization < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.events < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.observers < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.proxy < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.repository < plexus.core
    [DEBUG]   Imported: org.apache.maven.wagon.resource < plexus.core
    [DEBUG]   Imported: org.codehaus.classworlds < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.* < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.classworlds < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.component < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.configuration < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.container < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.context < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.lifecycle < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.logging < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.personality < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.util.xml.Xpp3Dom < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlPullParser < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlPullParserException < plexus.core
    [DEBUG]   Imported: org.codehaus.plexus.util.xml.pull.XmlSerializer < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.* < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.artifact < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.collection < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.deployment < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.graph < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.impl < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.installation < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.internal.impl < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.metadata < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.repository < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.resolution < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.spi < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.transfer < plexus.core
    [DEBUG]   Imported: org.eclipse.aether.version < plexus.core
    [DEBUG]   Imported: org.slf4j.* < plexus.core
    [DEBUG]   Imported: org.slf4j.spi.* < plexus.core
    [DEBUG] Populating class realm maven.api
    [INFO] Error stacktraces are turned on.
    [DEBUG] Reading global settings from C:\maven-3\conf\settings.xml
    [DEBUG] Reading user settings from C:\Users\H1514\.m2\settings.xml
    [DEBUG] Reading global toolchains from C:\maven-3\conf\toolchains.xml
    [DEBUG] Reading user toolchains from C:\Users\H1514\.m2\toolchains.xml
    [DEBUG] Using local repository at C:\Users\H1514\.m2\repository
    [DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10.0 for C:\Users\H1514\.m2\repository
    [INFO] Scanning for projects...
    [DEBUG] Extension realms for project camel:camel:jar:0.0.1-SNAPSHOT: (none)
    [DEBUG] Looking up lifecyle mappings for packaging jar from ClassRealm[plexus.core, parent: null]
    [DEBUG] === REACTOR BUILD PLAN ================================================
    [DEBUG] Project: camel:camel:jar:0.0.1-SNAPSHOT
    [DEBUG] Tasks:   [clean, install]
    [DEBUG] Style:   Regular
    [DEBUG] =======================================================================
    [INFO]                                                                         
    [INFO] ------------------------------------------------------------------------
    [INFO] Building camel 0.0.1-SNAPSHOT
    [INFO] ------------------------------------------------------------------------
    [DEBUG] Lifecycle default -> [validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy]
    [DEBUG] Lifecycle clean -> [pre-clean, clean, post-clean]
    [DEBUG] Lifecycle site -> [pre-site, site, post-site, site-deploy]
    [DEBUG] Lifecycle default -> [validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy]
    [DEBUG] Lifecycle clean -> [pre-clean, clean, post-clean]
    [DEBUG] Lifecycle site -> [pre-site, site, post-site, site-deploy]
    [DEBUG] Using transporter WagonTransporter with priority -1.0 for https://repo.maven.apache.org/maven2
    [DEBUG] Using connector BasicRepositoryConnector with priority 0.0 for https://repo.maven.apache.org/maven2
    Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom

    [DEBUG] Writing tracking file C:\Users\H1514\.m2\repository\org\apache\maven\plugins\maven-clean-plugin\2.5\maven-clean-plugin-2.5.pom.lastUpdated
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 22.858 s
    [INFO] Finished at: 2015-05-29T14:11:00+08:00
    [INFO] Final Memory: 5M/15M
    [INFO] ------------------------------------------------------------------------
    [ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/23.235.47.215] failed: Connection timed out: connect -> [Help 1]
    org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5
        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-clean-plugin:jar:2.5
        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-clean-plugin:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/23.235.47.215] 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-clean-plugin:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/23.235.47.215] 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$1.run(RunnableErrorForwarder.java:67)
        at org.eclipse.aether.connector.basic.BasicRepositoryConnector$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/23.235.47.215] failed: Connection timed out: connect
        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/23.235.47.215] failed: 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
    [ERROR] 
    [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/PluginResolutionException

19 个答案:

答案 0 :(得分：33)

您的调试输出表明Clean是它尝试运行的第一件事，因此我猜测它无法从中央下载任何插件。

首先，看看你是否可以直接在网络浏览器中下载插件jar：http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.jar

如果可以，那么您的网络浏览器可以连接到中央，但是maven没有。这告诉我，您的网络浏览器正在使用maven未配置使用的代理。

Maven代理设置在深度here中进行了描述。为了简化这一点（用您的互联网设置中的值替换协议/主机/端口）并将其放在您的maven <settings>文件的settings.xml标记中：

<proxies>
  <proxy>
    <id>proxy</id>
    <active>true</active>
    <protocol>http</protocol>
    <host>proxy.example.com</host>
    <port>8080</port>
  </proxy>
</proxies>

答案 1 :(得分：8)

该错误是由于maven官方存储库无法访问。此回购（https://repo.maven.apache.org/maven2/）无法访问，请按照以下步骤操作：

  1. 首先删除/home/user/.m2文件夹
  2. 在用户主页创建 .m2 文件夹，在 .m2
    3. 中创建存储库文件夹
  3. 将默认 settings.xml 复制到 .m2 文件夹
  4. 在settings.xml中更改镜像，如下面的snap所示 mirror_settings

    5. ＆＃13;
    ＆＃13; 
    <mirrors>
  <mirror>
    <id>UK</id>
    <name>UK Central</name>
    <url>http://uk.maven.org/maven2</url>
    <mirrorOf>central</mirrorOf>
  </mirror>
</mirrors>
    ＆＃13;
    ＆＃13;
    ＆＃13;

    1. 立即执行mvn clean命令.....

答案 2 :(得分：2)

我遇到了同样的问题，即使我正在使用家庭wifi连接，没有任何代理要求。

我的项目是在c:\users\<>\Workspace\Project\

创建的

当我去上面的位置然后跑了

  

mvn clean install

我得到以下错误：

[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its de
endencies could not be resolved: Failed to read artifact descriptor for org.apa
he.maven.plugins:maven-clean-plugin:jar:2.5: Could not transfer artifact org.ap
che.maven.plugins:maven-clean-plugin:pom:2.5 from/to central (https://repo.mave
.apache.org/maven2)

我花了一整天的时间来尝试解决这个问题，但在我的案例中解决方案很简单。

我将项目移至E:\Workspace\Project\

的非用户特定位置

这给我带来了奇迹！

答案 3 :(得分：2)

就我而言，我的问题是我正在使用旧版本的NetBeans。 Maven存储库删除了一个http引用，但是Netbeans中嵌入式Maven对该HTTP引用进行了硬编码。起初我真的很困惑，因为我的pom.xml引用了正确的https://repo.maven.apache.org/maven2。

修复非常简单。我从以下位置下载了Maven的最新zip存档，并将其解压缩到我的计算机中： https://maven.apache.org/download.cgi

在Netbeans的“工具”->“选项”->“ Java”->“ Maven”中，我将“ Maven Home”设置为新提取的zip文件位置。

现在我可以构建我的项目了。...

答案 4 :(得分：1)

我遇到了同样的问题，但它在setting.xml(.*\apache-maven-3.3.3\apache-maven-3.3.3\conf)中有一些变化后解决了。

  <proxies>
  <proxy>
    <id>proxy</id>
    <active>true</active>
    <protocol>http</protocol>
    <host>HOSTNAME</host>
    <port>PORT</port>
  </proxy>
</proxies>

只需从IE设置中检查主机名和端口 - ＆gt;连接 - ＆gt;局域网设置 - ＆gt;代理服务器

希望这也能解决你的问题：）

答案 5 :(得分：0)

这就是在 IntelliJIdea 中对我有用的方法：

转到文件 -> 构建、执行、部署 -> 构建工具 -> Maven -> 存储库

检查是否有两个存储库：

https://repo.maven.apache.org/maven2  (Remote)
C:/Users/_user_/.m2/repository   (Local)

然后点击两个存储库的更新。远程仓库的更新需要一段时间，但最后点击OK就可以了。

答案 6 :(得分：0)

没有其他答案对我有用。对我有用的解决方案是通过cmd手动下载缺少的工件：

mvn依赖项：get -DrepoUrl = http：//repo.maven.apache.org/maven2/ -Dartifact = ro.isdc.wro4j：wro4j-maven-plugin：1.8.0

答案 7 :(得分：0)

我遇到了同样的问题，但就我而言，我只需要将我的项目指向JDK而不是构建路径中的JRE，就可以解决该问题，并且我可以毫无问题地导入所有Maven依赖项！

答案 8 :(得分：0)

对于所有Windows用户，请尝试将代码库移至较短的Windows路径，例如：C：/ myProj

深度嵌套的Maven jar文件可以在Windows中创建更长的文件路径。由于Windows操作系统默认情况下将文件路径长度限制为260个字符，因此，当尝试读取位于超过260个字符的路径上的文件时，它将引发异常。

您可以更改此默认值，以将此限制增加到260个以上。在网上搜索，您会发现许多有关该操作的信息。

同时使用npm软件包时，您可能会遇到类似的问题。

答案 9 :(得分：0)

请考虑更改项目中使用的JDK。对我来说，我将JDK从1.6更改为1.8，并更新了Maven。

答案 10 :(得分：0)

仅删除.m2文件夹中的存储库文件夹即可解决相同的问题。

答案 11 :(得分：0)

我也遇到过同样的问题。我已将maven-assembly-plugin中的3.1.1从2.5.3更改为POM.xml

建议的版本应在“插件”部分中完成。在此处输入代码maven-assembly-plugin

的工件ID

答案 12 :(得分：0)

参考 Deepak Vishwakarma 的答案，我尝试了这一点，并且遇到了网址问题的相同问题。我安装了maven-3.6.3，并在.m2文件夹中找到了

settings.xml.bak

文件，然后从该文件复制该镜像链接，只是更改了@Deepak所做的URL。它像魅力一样运作！ 我从该.bak文件中获得的镜像链接

http://local.maven.repo:9081/nexus/content/groups/public

然后执行：

mvn clean 
mvn clean install

答案 13 :(得分：0)

我通过从open jdk 8切换到oracle jdk解决了这个问题。

$ java -version Java版本“ 1.8.0_221” Java（TM）SE运行时环境（内部版本1.8.0_221-b11） Java HotSpot（TM）64位服务器VM（内部版本25.221-b11，混合模式）

答案 14 :(得分：0)

我遇到了相同的Maven连接超时问题，并通过禁用/将防病毒和防火墙设置列入白名单来解决。

问题立即得到解决：

org.apache.maven.wagon.providers.http.httpclient.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:239)

答案 15 :(得分：0)

我遇到了类似的问题。尝试执行以下步骤： 手动删除.m2文件夹。 请参阅settings.xml文件，并检查存储库详细信息是否正确，例如id和url标记。 另外，请确保您已连接到同一网络，并检查是否可以从浏览器访问该URL。 最后将Maven项目保留在/ home / User /中。

答案 16 :(得分：0)

我遇到了同样的问题，看到我尝试过的所有选项并且没有一个可以工作，我感到很沮丧，

一旦您正确配置了一切，包括settings.xml

，就会结束

只需清除您的本地存储库文件夹并尝试mvn命令。这对我有很大的帮助

希望这有助于其他人

答案 17 :(得分：-1)

您需要清除Maven存储库以解决此问题。

答案 18 :(得分：-1)

问题可能出在JVM客户端不信任repo.maven.apache.org证书。 根据建议，您可以尝试在浏览器中访问https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom。

如果可行，则可能是这种情况。 您将必须明确告诉JMV信任Maven证书。 您可以在此处"PKIX path building failed" and "unable to find valid certification path to requested target"

引用答案。

在Mac OS上对我来说，证书文件位于/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/security 输入您上面提到的URL时，您需要的证书就是显示给浏览器的证书

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