Maven全新安装失败，连接超时:连接错误 [英] Maven clean install fails with connection timed out:connect error

问题描述

我在项目上尝试了maven全新安装，每次遇到以下错误时，我都会

I tried maven clean install on my project and I every time I get the following error

Maven版本2.2.1 JDK 1.7

Maven version 2.2.1 JDK 1.7

F:\Wealth>"C:\Program Files\apache-maven-2.2.1\bin\mvn.bat" cl
ean install -U
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building polo
[INFO]    task-segment: [clean, install]
[INFO] ------------------------------------------------------------------------
Downloading: http://maven.apps.com/maven2/org/apache/maven/plugins/maven-cle
an-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository nunki (http://maven.apps.com/maven2): Error transferring file: Connection timed out: connect
Downloading: http://maven.apps.com/maven/org.apache.maven.plugins/poms/maven
-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository nunki-legacy (http://maven.apps.com/maven): Error transferring file: Connection timed out: connect
Downloading: http://maven.apps.com/maven2//org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository central (http://repo1.maven.org/maven2): Error transferring file: Connection timed out: connect
Downloading: http://maven.apps.com/maven2/org/apache/maven/plugins/maven-cle
an-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository nunki (http://maven.apps.com/maven2): Error transferring file: Connection timed out: connect
Downloading: http://maven.apps.com/maven/org.apache.maven.plugins/poms/maven
-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository nunki-legacy (http://maven.apps.com/maven): Error transferring file: Connection timed out: connect
Downloading: http://maven.apps.com/maven2//org/apache/maven/plugins/maven-cl
ean-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository central (http://repo1.maven.org/maven2): Error transferring file: Connection timed out: connect
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: org.apache.maven.plugins:maven-clean-plugin

Reason: POM 'org.apache.maven.plugins:maven-clean-plugin' not found in repository: Unable to download the artifact from any repository

  org.apache.maven.plugins:maven-clean-plugin:pom:2.2

from the specified remote repositories:
  nunki-legacy (http://maven.apps.com/maven),
  central (http://maven.apps.com/maven2/),
  nunki (http://maven.apps.com/maven2)

 for project org.apache.maven.plugins:maven-clean-plugin

我已经检查了settings.xml中的代理设置，我的感觉是问题所在.但是我尝试了相同的代理设置来构建其他开源软件项目，并且构建成功.但是对于这个项目，我看到了这个错误.

I have checked the proxy settings in settings.xml and I my feeling is that's the problem. But I have tried the same proxy settings to build other open source software projects and the build was success. But for this project, I see this error.

有人可以对这个问题有个想法吗?

Can someone give an idea on this problem.

推荐答案

DependencyResolutionException

(来源: Maven Confluence )

当Maven无法下载依赖项时，通常会发生此错误.导致此错误的可能原因是:

This error generally occurs when Maven could not download dependencies. Possible causes for this error are:

1. POM缺少托管工件的<repository>的声明.
2. 您配置的存储库需要身份验证，并且Maven无法向服务器提供正确的凭据.在这种情况下，请确保您的${user.home}/.m2/settings.xml包含一个<server>声明，该声明的<id>与要使用的远程存储库的<id>相匹配.有关更多详细信息，请参见 Maven设置参考.
3. 有问题的远程存储库使用SSL，运行Maven的JVM不信任服务器的证书.
4. 存在一个普遍的网络问题，该问题阻止Maven访问任何远程存储库，例如缺少代理配置.
5. 您已将Maven配置为执行严格的校验和验证，并且下载的文件已损坏.
6. Maven无法将文件保存到本地存储库，请参阅 LocalRepositoryNotAccessibleException 有关更多详细信息.
7. 在Maven 3中，如果您刚刚下载失败并已将其修复(例如，通过将jar上传到存储库)，则它将缓存失败.要强制刷新，请在命令行中添加-U.

1. The POM misses the declaration of the <repository> which hosts the artifact.
2. The repository you have configured requires authentication and Maven failed to provide the correct credentials to the server. In this case, make sure your ${user.home}/.m2/settings.xml contains a <server> declaration whose <id> matches the <id> of the remote repository to use. See the Maven Settings Reference for more details.
3. The remote repository in question uses SSL and the JVM running Maven does not trust the certificate of the server.
4. There is a general network problem that prevents Maven from accessing any remote repository, e.g. a missing proxy configuration.
5. You have configured Maven to perform strict checksum validation and the files to download got corrupted.
6. Maven failed to save the files to your local repository, see LocalRepositoryNotAccessibleException for more details.
7. In Maven 3 if you just had a failed download and have fixed it (e.g. by uploading the jar to a repository) it will cache the failure. To force a refresh add -U to the command line.

如果遇到与网络相关的一般性问题，您还可以查阅以下文章:

In case of a general network-related problem, you could also consult the following articles:

• 配置代理
• 安全和部署设置
• 通过身份验证的HTTPS进行远程存储库访问的指南

• Configuring a Proxy
• Security and Deployment Settings
• Guide to Remote Repository Access through Authenticated HTTPS

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