SpringMVC整合,出现注解没有起作用的情况处理

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <!--启动注解-->
    <context:annotation-config />
    <!--  base-package 注解所在的包根据自己的需要划分注解类使用的范围  -->
    <context:component-scan base-package="main.com.talkweb">
        <!--不再管理Controller 注解  因为它单独给mvc-servler.xml去管理-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
</beans>

<!--启动注解-->
    <context:annotation-config />

!--  base-package 注解所在的包根据自己的需要划分注解类使用的范围  -->
    <context:component-scan base-package="main.com.talkweb.Controller">
        <!--不再管理Controller 注解  因为它单独给mvc-servler.xml去管理-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

!--  base-package 注解所在的包根据自己的需要划分注解类使用的范围  -->
    <context:component-scan base-package="main.com.talkweb">
        <!--不再管理Controller 注解  因为它单独给mvc-servler.xml去管理-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

/*web容器启动的时候创建对象，调用方法来初始化容器以及前端控制器*/
public class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    /*获取根容器的配置类，相当于Spring的配置文件，用来创建父容器*/
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{RootConfig.class};
    }
    /*获取web容器的配置类，相当于SpringMVC的配置文件，用来创建子容器*/
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{AppConfig.class};
    }
    /*获取DispatcherServlet的映射信息*/
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

//SpringMVC只扫描Controller，子容器
@ComponentScan(value = "springMVC", includeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = {Controller.class})
})
public class AppConfig {
}

//Spring的容器不扫描Controller，必须禁用默认的过滤规则才会生效，父容器
@ComponentScan(value = "springMVC", excludeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = {Controller.class})
}, useDefaultFilters = false)
public class RootConfig {
}

@Service
public class HelloService {
    public String sayHello(String name){
        return "hello " + name;
    }
}

@Controller
public class HelloController {
    @Autowired
    HelloService helloService;
    @ResponseBody
    @RequestMapping("/hello")
    public String hello(){
        String hello = helloService.sayHello("张三");
        return hello;
    }
}

@ComponentScan(value = {"controller", "service", "config", "springMVC"}, includeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = {Controller.class})
}, useDefaultFilters = false)
@EnableWebMvc
public class AppConfig {
}

@ComponentScan(value = {"controller", "service", "config", "springMVC"}, includeFilters = {
        @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = {Controller.class})
}, useDefaultFilters = false)
@EnableWebMvc
public class AppConfig extends WebMvcConfigurerAdapter{
    //定制视图解析器
    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        registry.jsp("/WEB-INF/views/", ".jsp");
    }
    //定制静态资源访问
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        /*相当于在xml配置文件中使用<mvc:default-servlet-handler>标签，
        * 将SpringMVC处理不了的请求交给Tomcat，这样静态资源就可以访问了*/
        configurer.enable();
    }
    //定制拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");
    }
}