先它是一个开源的项目；它是一个基于IoC和AOP的构架多层j2ee系统的框架，但它不强迫你必须在每一层 中必须使用Spring，因为它模块化的很好，允许你根据自己的需要选择使用它的某一个模块-First it is an open source project　it is a framework based on IoC and AOP framework for multi-j2ee system, but it does not force you to use in each layer must be Spring, because it is very modular, allowing you to according to their need to select a module to use it