各版spring 2.x 3.x 4.x下载地址
http://maven.springframework.org/release/org/springframework/spring/
包内有jar包,源码,文档
其他站点下载
http://repo.spring.io/libs-release-local/org/springframework/spring/
http://repo.spring.io/simple/libs-release-local/org/springframework/spring/
github主页