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();
}
}
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