http://maven.oschina.net/

http://mvnrepository.com

亲测可用的地址：
1.http://repo1.maven.org/maven2/
2.http://repository.jboss.com/maven2/
3.http://repository.sonatype.org/content/groups/public/
4.http://mirrors.ibiblio.org/pub/mirrors/maven2/org/acegisecurity/