0x00为什么学习Spring
随着对Java EE的不断接触和理解，你会发现Spring MVC 在各个企业和项目中发挥着越来越重要的作用。掌握Spring MVC 已成为我们IT行业生存必学的本领之一。
Spring Framework 是一个开源的Java／Java EE全功能栈（full-stack）的应用程序框架，以Apache许可证形式发布，也有.NET平台上的移植版本。该框架基于 Expert One-on-One Java EE Design and Development（ISBN 0-7645-4385-7）一书中的代码，最初由Rod Johnson和Juergen Hoeller等开发。Spring Framework提供了一个简易的开发方式，这种开发方式，将避免那些可能致使底层代码变得繁杂混乱的大量的属性文件和帮助类。
0x01 Spring 官网介绍
Spring 官网：https://spring.io/
Spring 文档：https://spring.io/guides
Spring IDE: https://spring.io/tools/sts
Spring Project: https://spring.io/projects
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
从配置到安全，Web应用程序到大数据-无论你的应用程序的基础设施需求可能是，有一个Spring项目，以帮助您建立它。启动小，使用你所需要的-Spring是模块化设计.
Spring Project 有很多, 而我们这里将要重点学习和掌握的是Spring Framework。
0x02 Spring Framework
Spring Framework介绍
Spring Framework核心支持依赖注入，事务管理，Web应用程序，数据访问，消息传递，测试和更多。
Spring Framework提供了现代的基于java的企业应用程序在任何部署平台的综合规划和配置模型。Spring的一个关键要素是应用层的基础设施支持：Spring专注于企业应用程序的“管道”，这样团队就可以专注于应用程序级业务逻辑，而不必对特定部署环境进行不必要的联系。
Spring Framework 功能特点
依赖注入面向方面编程包括Spring的声明事务管理Spring MVC Web应用程序和REST Web服务框架基本支持JPA，JDBC，JMS更多…
Minimum requirements
- JDK 6+ for Spring Framework 4.x
- JDK 5+ for Spring Framework 3.x
核心Jar包依赖关系：
如果你不是写一个java web Application,那么将不需要spring-web 模块。
| GroupId |
ArtifactId |
Description |
| org.springframework |
spring-aop |
Proxy-based AOP support |
| org.springframework |
spring-aspects |
AspectJ based aspects |
| org.springframework |
spring-beans |
Beans support, including Groovy |
| org.springframework |
spring-context |
Application context runtime, including scheduling and remoting abstractions |
| org.springframework |
spring-context-support |
Support classes for integrating common third-party libraries into a Spring application context |
| org.springframework |
spring-core |
Core utilities, used by many other Spring modules |
| org.springframework |
spring-expression |
Spring Expression Language (SpEL) |
| org.springframework |
spring-instrument |
Instrumentation agent for JVM bootstrapping |
| org.springframework |
spring-instrument-tomcat |
Instrumentation agent for Tomcat |
| org.springframework |
spring-jdbc |
JDBC support package, including DataSource setup and JDBC access support |
| org.springframework |
spring-jms |
JMS support package, including helper classes to send/receive JMS messages |
| org.springframework |
spring-messaging |
Support for messaging architectures and protocols |
| org.springframework |
spring-orm |
Object/Relational Mapping, including JPA and Hibernate support |
| org.springframework |
spring-oxm |
Object/XML Mapping |
| org.springframework |
spring-test |
Support for unit testing and integration testing Spring components |
| org.springframework |
spring-tx |
Transaction infrastructure, including DAO support and JCA integration |
| org.springframework |
spring-web |
Foundational web support, including web client and web-based remoting |
| org.springframework |
spring-webmvc |
HTTP-based Model-View-Controller and REST endpoints for Servlet stacks |
| org.springframework |
spring-webmvc-portlet |
MVC implementation to be used in a Portlet environment |
| org.springframework |
spring-websocket |
WebSocket and SockJS infrastructure, including STOMP messaging support |