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参考书籍《spring in action》
1.装载bean
依赖注入的本质是装配（wiring），指的是创建应用对象之间协作关系的行为。
装配方式：
1）传统：XML should not be first choice
核心框架的10个命名空间：
2）explicit configuration in java
step1：creating a configuration class @Configuration public class CDPlayerConfig{...} step2:declaring a simple bean @Bean(name="newname") public CompactDisc sgtPeppers(){ return new SgtPeppers(); } step3 injecting with javaConfig @Bean public CDPlayer cdPlayer(){ return new CDPlayer(sgtPeppers()); }
3 ) implicit bean discovery and automatic wiring（只有自己写的源代码可以用）
##compoent scanning---在应用上下文中自动发现需要被创建的bean
step1: naming an component-scanned bean
@Component("newbeanID")
public subclass implements superinterface{.....}
step2:setting a base package for component scanning
@Configuration @ComponentScan(basePackage={"a","b","c"}) //@ComponentScan(basePackageClasses={xx.class,xxx.class} public class classconfig{.....}
##autowiring---自动实现bean注入
@Component public class CDPlayer implements MediaPlayer{ private CompactDisc cd; @Autowired ( or @Inject) public CDPlayer(CompactDisc cd) { this.cd =cd; } public void play() { cd.play(); } }
4)混合装载
referencing XML configuration in JavaConfig
referencing JavaConfig in XML configuration
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原文地址：http://www.cnblogs.com/flyingbee6/p/5348115.html
