<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns=" "

       xmlns:xsi=" "

       xsi:schemaLocation="

           ">

       <bean id="personDao" class="cn.itcast.dao.impl.PersonDaoBean"></bean>

       <bean id="personService" class="cn.itcast.service.impl.PersonServiceBean">

         <!-- 使用构造器参数注入 -->

         <constructor-arg index="0" type="cn.itcast.dao.PersonDao" ref="personDao"></constructor-arg>

           <constructor-arg index="1" value="传智博客"></constructor-arg>

       </bean>

</beans>

---------------------------------------------------------------------------------------------------

public class PersonServiceBean implements PersonService {

 private PersonDao personDao;

 private String name;

 public PersonServiceBean(PersonDao personDao, String name) {

  this.personDao = personDao;

  this.name = name;

 }

 @Override

 public void save(){

  System.out.println(name);

  personDao.add();

 }

}