使用Spring註解，首先需要安裝spring-aop.jar包，在配置檔案中新增開啟註解的配置
<?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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 使用spring註解 -->
<!-- <context:annotation-config/> -->
<!-- 下面的配置告訴spring容器自動scanner用註解標註bean -->
<context:component-scan base-package="org.lian"/>
</beans>
下面是使用註解的簡單的例項
@Service("contactsManagerService")
public class ContactsManagerServiceImpl implements ContactsManagerService {
private ContactsManagerDao contactsManagerDao;
public ContactsManagerDao getContactsManagerDao() {
return contactsManagerDao;
}
@Qualifier("contactsManagerDao")
@Autowired
public void setContactsManagerDao(ContactsManagerDao contactsManagerDao) {
this.contactsManagerDao = contactsManagerDao;
}
@Override
public String getContacts() {
return contactsManagerDao.get();
}
}
@Component("contactsManagerDao")
public class ContactsManagerDaoImpl implements ContactsManagerDao {
@Override
public String get() {
String value = "ContactsDao.get()";
return value;
}
}
單元測試類
public class App {
public static void main(String[] args) {
String classPath = "classpath*:conf/spring/app_*.xml";
// ApplicationContext context = new ClassPathXmlApplicationContext(
// new String[] { "services.xml", "daos.xml" });
ApplicationContext context = new ClassPathXmlApplicationContext(classPath);
GroupManagerService service = context.getBean(GroupManagerService.class);
System.out.println(service.getGroup());
ContactsManagerService service2 = context.getBean("contactsManagerService",
ContactsManagerService.class);
System.out.println(service2.getContacts());
}
}