Spring annotation @resource Why doesn't it work?

I want to use annotations, in the service layer calls the DAO Layer query database method, the query card number "1" exists, but error:

This should be annotated using unsuccessful meaning, how should spring annotations be used?

Here is a complete example of the project structure as follows

Testannotation.java

import Org.springframework.context.ApplicationContext;      Import Org.springframework.context.support.ClassPathXmlApplicationContext;  Public classtestannotation { Public Static voidMain (string[] args) {ApplicationContext context=NewClasspathxmlapplicationcontext ("Applicationcontext.xml"); Myaction Action= (myaction) Context.getbean ("myaction");                Action.testannotation (); }  }  

Applicationcontext.xml

<?xml version="1.0"encoding="UTF-8"? ><beans xmlns="Http://www.springframework.org/schema/beans"Xmlns:context="Http://www.springframework.org/schema/context"Xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xsi:schemalocation="Http://www.springframework.org/schema/beanshttp//www.springframework.org/schema/beans/spring-beans-3.1.xsdhttp//Www.springframework.org/schema/contexthttp//www.springframework.org/schema/context/spring-context-3.1.xsd "><context:annotation-config/> <!--action is not annotated-<bean id="myaction" class="com.demo.annotation.MyAction"Scope="prototype"/> <!--annotation test--<context:component-scanBase-package="com.demo.annotation"/> </beans>

Myaction.java

import Javax.annotation.Resource;  Public classmyaction{@Resource (name="Testservice")      PrivateTestservice Testservice;  PublicString testannotation () {if(NULL==Testservice) {System. out. println ("Service is null!!"); The String result=testservice.gettestannotation (); System. out. println (Result); return "Success"; }             PublicTestservice Gettestservice () {returnTestservice; }         Public voidSettestservice (Testservice testservice) { This. Testservice =Testservice; }        }  

Testservice.java

 Public Interface Testservice {    public  String gettestannotation ();  }

Testserviceimpl.java

import Org.springframework.stereotype.Service;  Import org.springframework.beans.factory.annotation.Autowired;        Import Org.springframework.beans.factory.annotation.Qualifier; /** * * * NOTE Test **/@Service ("Testservice")   Public classTestserviceimp implements Testservice {/** * Automatic Assembly*/@Autowired @Qualifier ("Testdao")      //The @Resource (name= "Testdao"), equivalent to <property ... ref= "Testdao"/>    PrivateTestdao Testdao;  PublicTestdao Gettestdao () {returnTestdao; }         Public voidSettestdao (Testdao Testdao) { This. Testdao =Testdao; } @Override PublicString gettestannotation () {//TODO auto-generated Method Stub        returntestdao.gettestdaoannotation (); }    }  

Testdao.java

 Public Interface Testdao {      /* * * *      get DAO layer Annotations      * @return      */public        String gettestdaoannotation ();  }  

Testdaoimpl.java

import org.springframework.stereotype.Repository; /** * Test annotation **/@Repository ("Testdao")   Public classTestdaoimpl implements Testdao {@Override PublicString gettestdaoannotation () {//TODO auto-generated Method Stub        return "This is Testdao Annotation ..."; }    }  

Operation Result:

Spring annotation @resource Why doesn't it work?