使用构造器注入

 <?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="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>
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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();
 }
}