获取spring源码：
http://repo.springsource.org/libs-release-local/
http://repo.springsource.org/libs-release-local/org/springframework/spring/3.2.4.RELEASE/
从第一个一步步找下去，spring和security都有，包括source源代码
如 spring-aspects-3.2.13.RELEASE.jar对应源码文件为：
spring-aop-3.2.13.RELEASE-sources.jar
妈妈再也不用担心我找不到spring源码了！
原文：http://www.cnblogs.com/anybus/p/4996548.html
