SpringMvc HelloWorld 配置不成功？

action：

@Controller
@RequestMapping("/admin")
public class IndexController {
 
    @RequestMapping(value="/index.htm",method={RequestMethod.GET,RequestMethod.POST})
    public @ResponseBody String index(){
        System.out.println("hay,springMvc Start!");
         
        return "hello World!";
    }
}
xml配置：

<!-- spring Mvc   -->
    <servlet>
        <servlet-name>springServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>WEB-INF/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springServlet</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
springMvc配置：

<!-- 自动扫描且只扫描@Controller -->
    <context:component-scan base-package="com.euc" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
     
     
    <mvc:default-servlet-handler/>
     
     
     
    <!-- 定义JSP文件的位置 --> 
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

然后控制台无任何打印信息，也不提示没有找到action，是不是配置有问题？