Maven clean install fails with connection timed out:connect error

问题

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

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

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.

Can someone give an idea on this problem.

回答1:

DependencyResolutionException

(source: Maven Confluence)

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

The POM misses the declaration of the <repository> which hosts the artifact.
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.
The remote repository in question uses SSL and the JVM running Maven does not trust the certificate of the server.
There is a general network problem that prevents Maven from accessing any remote repository, e.g. a missing proxy configuration.
You have configured Maven to perform strict checksum validation and the files to download got corrupted.
Maven failed to save the files to your local repository, see LocalRepositoryNotAccessibleException for more details.
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.

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

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

回答2:

Your remote repositories all have the domain maven.apps.com, is that a domain in your intranet? Is Nexus running as a mirror for Maven central?

If not, you can try removing settings.xml temporarily and see if the default settings succeed.

回答3:

I had this problem, where maven couldn't download anything. After some googling and some luck, I deleted the file ~/.m2/server.xml. That fixed the problem. I haven't touched that file before, not sure what the problem was.

来源：https://stackoverflow.com/questions/28725195/maven-clean-install-fails-with-connection-timed-outconnect-error

标签

java

maven-2

pom.xml

connection-timeout