1.Spring’s fundamental mission: Spring simplifies Java development.
2.To back up its attack on Java complexity, Spring employs four key strategies:
? Lightweight and minimally invasive development with POJO s
? Loose coupling through DI and interface orientation
? Declarative programming through aspects and common conventions
? Eliminating boilerplate code with aspects and templates
Spring In Action 第4版笔记-第一章-001
原文：http://www.cnblogs.com/shamgod/p/5229305.html