maven中央仓库不能访问的解决办法

导入Maven项目，编译时候出错，好象是接不上apache.org/maven2，下载不了maven-resources-plugin-2.6.jar 这个jar包

出错内容：

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building maven-01 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.6/maven-resources-plugin-2.6.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.234 s
[INFO] Finished at: 2014-09-05T09:57:26+08:00
[INFO] Final Memory: 2M/6M
[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.maven.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): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [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

网上查了一下，无法访问maven.org网站的解决此问题理论上有两个办法，一个是在maven的配置文件中设置代理，另一个是在maven的配置文件中设置联通网络下，能够访问的中央仓库的mirrors。因为也不好找稳定的代理，在网上搜索了两个可用的mirror站点，配置方式如下：

1、打开maven配置文件(maven安装目录下的conf目录下的settings.xml文件)

2、搜索mirrors关键字，加入mirror镜像节点

 
           ibiblio.org 
           ibiblio Mirror of http://repo1.maven.org/maven2/ 
           http://mirrors.ibiblio.org/pub/mirrors/maven2 
           central 
            
     
       
         jboss-public-repository-group  
         central  
         JBoss Public Repository Group  
         http://repository.jboss.org/nexus/content/groups/public  
     

但是这两个也不好用，在这里使用 OSC Maven 仓库找到开源中国的资源库，

配置了他们的镜像

        osc
        *
        http://maven.oschina.net/content/groups/public/
   

成功编译。