spring依赖注入之注解方式驱动依赖注入
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" 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"> <context:annotation-config/> </beans>
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3、修改以上配置文件的头信息后，我们就可以在Java代码通过注解方式来注入bean，看下面代码
（1）@Resource
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; } @Resource(name="studentDao") //通过此注解完成从spring配置文件中查找名称为studentDao的bean来装配字段studentDao，如果spring配置文件中不存在studentDao名称的bean则转向按照bean类型经行查找 public void setStudentDao(IStudentDao studentDao) { this.studentDao = studentDao; } public void saveStudent() { studentDao.saveStudent(); System.out.print(",ID为："+id); }}??
配置文件添加如下信息
? <bean id="studentDao" />
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(2)@Autowired
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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; } @Autowired//通过此注解完成从spring配置文件中查找满足studentDao类型的bean //@Qualifier("studentDao")则按照名称经行来查找转配的 public void setStudentDao(IStudentDao studentDao) { this.studentDao = studentDao; } public void saveStudent() { studentDao.saveStudent(); System.out.print(",ID为："+id); }}??
配置文件添加如下信息
? <bean id="studentDao" />
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4.spring2.5还提供了对受管组件的Classpath扫描，它可以使spring配置文件减少使用<bean></bean>来配置元数据bean