<?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="boss" class="com.wuxinliulei.Boss"><property name="car" ref="car"/><property name="office" ref="office" /></bean><bean id="office" class="com.wuxinliulei.Office"><property name="officeNo" value="002"/></bean><bean id="car" class="com.wuxinliulei.Car" scope="singleton"><property name="brand" value=" 红旗 CA72"/><property name="price" value="2000"/></bean>
</beans>

a.@Resource默认是按照名称来装配注入的，只有当找不到与名称匹配的bean才会按照类型来装配注入；
b.@Autowired默认是按照类型装配注入的，如果想按照名称来转配注入，则需要结合@Qualifier一起使用；
c.@Resource注解是由JDK提供，而@Autowired是由Spring提供@Resource的方式；
d. @Resource和@Autowired都可以书写标注在字段或者该字段的setter方法之上

2、使用注解的方式，我们需要修改spring配置文件的头信息，修改部分红色标注，如下

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

PS：

----------------------PS开始-------------------------------

在基于主机方式配置Spring的配置文件中，你可能会见到

<context:annotation-config/>

这样一条配置，他的作用是式地向 Spring 容器注册

AutowiredAnnotationBeanPostProcessor
CommonAnnotationBeanPostProcessor
PersistenceAnnotationBeanPostProcessor
RequiredAnnotationBeanPostProcessor

<bean class="org.springframework.beans.factory.annotation. AutowiredAnnotationBeanPostProcessor "/> 

<bean class="org.springframework.beans.factory.annotation. CommonAnnotationBeanPostProcessor"/> 

<bean class="org.springframework.beans.factory.annotation.PersistenceAnnotationBeanPostProcessor"/> 

<bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"/> 

<context:component-scan base-package="carPoolingController, carPoolingService, carPoolingDao" />

public class StudentService3 implements IStudentService {//@Resource(name="studentDao")放在此处也是可行的private IStudentDao studentDao;private String id;public void setId(String id) {this.id = id;}

public void setStudentDao(IStudentDao studentDao) {this.studentDao = studentDao;
}
public void saveStudent() {studentDao.saveStudent();System.out.print(",ID 为："+id);
}
}

<bean id="studentDao" class="com.wch.dao.impl.StudentDao"></bean>
<bean id="studentService3" class="com.wch.service.impl.StudentService3"></bean>

public class StudentService3 implements IStudentService {//@Autowired放在此处也是可行的private IStudentDao studentDao;private String id;public void setId(String id) {this.id = id;}

public void setStudentDao(IStudentDao studentDao) {this.studentDao = studentDao;}public void saveStudent() {studentDao.saveStudent();System.out.print(",ID 为："+id);}
}

<bean id="studentDao" class="com.wch.dao.impl.StudentDao"></bean>
<bean id="studentService3" class="com.wch.service.impl.StudentService3" />

@Resource
PersonDao  p;

@Resource
public void setP(PersonDao p) {this.p = p;
}