Spring 相关
Spring PropertyPlaceholderConfigurer Usage - 使用系统变量替换spring配置文件中的变量
http://blog.csdn.net/kongxx/article/details/5842036
spring-动态装配bean
http://blog.sina.com.cn/s/blog_5f54f0be0100n00x.html
Spring MethodInvoker
http://kamuikyo.iteye.com/blog/1166719
