Spring的DI(Ioc) - 利用构造器注入

1： 在给对象提供构造器

public class PersonServiceImpl implements PersonService {

	private PersonDao personDao;
	private String name;

	public PersonServiceImpl(PersonDao personDao, String name) {
		super();
		this.personDao = personDao;
		this.name = name;
	}

	public void save() {
		personDao.save();
		System.out.println("name = " + name);
		System.out.println("service :  " + " save 方法");
	}

}

　　

2: 配置XML文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

    <bean id="personDaoImpl" class="cn.gbx.dao.PersonDaoImpl"></bean>
 	<bean id="personServiceImpl" class="cn.gbx.serviceimpl.PersonServiceImpl" >
 		<constructor-arg index="0" type="cn.gbx.daoimpl.PersonDao" ref="personDaoImpl">
 		</constructor-arg>
 		<constructor-arg index="1" value="Myname"></constructor-arg>
 	</bean>
</beans>

　　

3： 测试即可。