Spring (4.0.2)-(Still Silicon Valley) study notes 1

1. What is Spring?

①spring is an open source framework;

②spring is designed to simplify enterprise-class application development. Using spring enables simple JavaBean to implement functionality that was previously only available to EJBS.

③spring is an IOC (DI) and an AOP container framework.

2. Describe spring in detail:

① Lightweight: Spring is non-invasive-objects in spring-based applications can be independent of spring's API;

② Dependency Injection: (DI---Dependency injection, IOC);

③ aspect-oriented programming: (AOP---aspect oriented programming);

④ container: Spring is a container because it contains and manages the life cycle of the Application object;

⑤ Framework: Spring implements a complex application that combines simple component configurations with XML and Java annotations that can be used in spring to combine these objects;

⑥ one-stop: On the basis of IOC and AOP, it is possible to integrate open source frameworks and excellent third-party libraries for various enterprise applications (in fact spring itself provides the SPRINGMVC of the presentation layer and the spring JDBC of the persistence layer);

Spring (4.0.2)-(Still Silicon Valley) study notes 1