Spring is standard in lightweight enterprise application framework. Layered architecture, which allows you to be selective about which of its components you use there are seven modules in Spring Frame work
I> Spring Core:
Uses IOC pattern to separate the application configuration with dependency specification from the actual application code.
IOC (Inversion of control)
- No creation of object but describe how to create
- Not connect direct to components
- Mention in conf file for which service which component
org.springframework.beans
Bean Factoryorg.springframework.beans.factory.BeanFactory- Singletone mode: Shared instance
- Prototype Mode: each retrieval result new object
- Take care when to create objects and when to invoke the method
Java Beans - POJO ()
- No creation of object but describe how to create
II> Spring Context:
- Context Information
- EJB, e-mail, internalization, validation, and scheduling functionality.
III> Spring AOP (Aspect Oriented Programming):
- Provides transaction management services for objects
- Logging (declaratively to the components that required logging.)
IV> Spring DAO (Data Access Object):
- managing the exception handling
- error messages
- opening and closing connections
V > Spring ORM
- Including JDO, Hibernate, and iBatis SQL Maps.
VI> Spring Web Module
- The Web module also eases the tasks of handling multi-part requests and binding request parameters to domain objects.
VII > Spring MVC framework:
- Numerous view technologies including JSP, Velocity, Tiles