中央仓库（官方和非官方）
https://repo1.maven.org/maven2
http://repo.maven.apache.org/maven2/
http://maven.oschina.net/content/groups/public/
http://download.java.net/maven/2/
https://repository.jboss.com/nexus/content/repositories/root_repository/maven2/
http://repository.jboss.com/maven2/
http://mirrors.ibiblio.org/maven2/
http://repository.sonatype.org/content/groups/public/
私有仓库
http://repository.codehaus.org/
http://snapshots.repository.codehaus.org/
http://people.apache.org/repo/m2-snapshot-repository/
http://people.apache.org/repo/m2-incubating-repository/