1、Spring容器：并不需要@Configuration注解
@ComponentScan(value = "com.bdm", excludeFilters = {@Filter(type = FilterType.ANNOTATION, classes = { Controller.class }) })
public class RootConfig {}2、SpringMVC容器：并不需要@Configuration注解
@ComponentScan(value = "com.bdm", useDefaultFilters = false, includeFilters = {@Filter(type = FilterType.ANNOTATION, classes = { Controller.class }) })
public class AppConfig {}3、controller
@Controller
public class HelloController {@AutowiredHelloService helloService;@ResponseBody@RequestMapping("/hello")public String sayHello(){String sayHello = helloService.sayHello("tomcat");return sayHello;}
}4、service
@Service
public class HelloService {public String sayHello(String name){return "Hello " + name;}
}5、AbstractAnnotationConfigDispatcherServletInitializer的实现类
public class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {@Overrideprotected Class<?>[] getRootConfigClasses() {return new Class[] { RootConfig.class };}@Overrideprotected Class<?>[] getServletConfigClasses() {return new Class[] { AppConfig.class };}@Overrideprotected String[] getServletMappings() {return new String[] { "/" };}}拦截的路径，此处配置的"/"：表示拦截除*.jsp之外的所有请求，*.jsp的解析是由tomcat的jsp引擎负责的；若配置成"/*"则会连*.jsp也会拦截，导致jsp无法解析
6、访问：
