原本好好的Maven工程却出现了莫名的错误
Failure to transfer org.codehaus.plexus:plexus-archiver:jar:2.0.1 from http://repo.maven.apache.org/
maven2 was cached in the local repository, resolution will not be reattempted until the update interval
of central has elapsed or updates are forced. Original error: Could not transfer artifact
org.codehaus.plexus:plexus-archiver:jar:2.0.1 from/to central (http://repo.maven.apache.org/maven2):
No response received after 60000
Failure to transfer org.codehaus.plexus:plexus-io:pom:1.0 from http://repo.maven.apache.org/maven2
was cached in the local repository, resolution will not be reattempted until the update interval of
central has elapsed or updates are forced. Original error: Could not transfer artifact
org.codehaus.plexus:plexus-io:pom:1.0 from/to central (http://repo.maven.apache.org/maven2): No
response received after 60000
上面的两个错误描述解决步骤是一样的，就不罗嗦重复介绍了。
以第二种错误提示为例：
1.先去掉Maven工程的maven特性，选中工程 鼠标右键-->Maven-->Disable Maven Nature. 此步骤后pom.xml错误消失
2.为工程增加Maven特性,选中工程 鼠标右键-->Configure-->Convert to Maven Project.
经过上述步骤，Maven工程就正常了。
PS：网络不好的情况下，用Maven真是不爽，最好建立本地私服。