源码注释性容器的创建及初始化

ApplicationContext ctx = new AnnotationConfigApplicationContext(AppConfig.class); 
MyService myService = ctx.getBean(MyService.class);　　// by type...
myService.doStuff();

public static void main(String[] args) {
    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(); 
    ctx.register(AppConfig.class, OtherConfig.class); 
    ctx.register(AdditionalConfig.class);
    ctx.refresh();
    MyService myService = ctx.getBean(MyService.class);
    myService.doStuff();
}

public static void main(String[] args) {
    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(); ctx.scan("com.acme");
    ctx.refresh();
    MyService myService = ctx.getBean(MyService.class);
}