spring_150801_autowired_qualifier

新建java project工程，建src、conf、test源码文件夹，导入相关包，需要spring的相关jar包和common-logging相关jar包

接口Service：

package com.spring;
 
public interface DogPetService {
    public void queryAllDogPets();
}

实现类ServiceImpl：

package com.spring.service.impl;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
 
import com.spring.DogPetService;
import com.spring.dao.DogPetDAO;
import com.spring.model.DogPet;
 
public class DogPetServiceImpl implements DogPetService{
 
    private DogPetDAO dogPetDAO;
 
    public DogPetDAO getDogPetDAO() {
        return dogPetDAO;
    }
 
    @Autowired
    public void setDogPetDAO(@Qualifier("dogPetDAO111") DogPetDAO dogPetDAO) {
        this.dogPetDAO = dogPetDAO;
    }
 
    @Override
    public void queryAllDogPets() {
        List<DogPet> list = dogPetDAO.queryAllDogPets();
        if(list != null)
        {
            for(DogPet d:list)
            {
                System.out.println(d.toString());
            }
        }
    }
 
}

Service调用的DAO类：

package com.spring.dao;
 
import java.util.ArrayList;
import java.util.List;
 
import com.spring.model.DogPet;
 
public class DogPetDAO {
 
    public List<DogPet> queryAllDogPets()
    {
        List<DogPet> list = new ArrayList<DogPet>();
 
        DogPet d1 = new DogPet();
        d1.setId(1111);
        d1.setName("dog1");
        d1.setAge(4);
        d1.setKind("buladuo");
        d1.setSex("B");
        d1.setHealth("good");
        DogPet d2 = new DogPet();
        d2.setId(2222);
        d2.setName("dog2");
        d2.setAge(3);
        d2.setKind("buladuo");
        d2.setSex("G");
        d2.setHealth("good");
 
        list.add(d1);
        list.add(d2);
 
        return list;
    }
}

配置文件beans.xml

<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
        xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
    <context:annotation-config/>
 
    <bean id="dogPetService" class="com.spring.service.impl.DogPetServiceImpl">
 
    </bean>
 
    <bean id="dogPetDAO111" class="com.spring.dao.DogPetDAO">
 
    </bean>
</beans>

test类，需要引入junit4的相关jar包：

package com.spring.test;
 
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
import com.spring.DogPetService;
 
public class AutoWiredTest {
 
    @Test
    public void queryAllDogPets()
    {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
        DogPetService dogPetService = (DogPetService)ctx.getBean("dogPetService");
        dogPetService.queryAllDogPets();
    }
}