eclipse-->run as-->maven install 报错解决方法

最近在用eclipse+maven 框架做项目，更新maven时老是报maven插件有问题，具体信息如下：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

SLF4J: Defaulting to no-operation (NOP) logger implementation

SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building cigna-local-web-app 1.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 13.110s

[INFO] Finished at: Sat Oct 19 14:27:59 CST 2013

[INFO] Final Memory: 2M/15M

[INFO] ------------------------------------------------------------------------

[ERROR] Plugin org.apache.maven.plugins:maven-dependency-plugin:2.8 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.8: Could not transfer artifact org.apache.maven.plugins:maven-dependency-plugin:pom:2.8
from/to central (http://repo.maven.apache.org/maven2): java.net.ConnectException: connection timed out to
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom -> [Help 1]

[ERROR]

[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

[ERROR] Re-run Maven using the -X switch to enable full debug logging.

[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
原因是缺少了maven插件的jar，而maven插件的jar是通过setting.xml配置的(具体的将是maven 的仓库)，在eclipse中window-->preference-->maven--user Settings 配置