spring注解注入

@Autowired

public void setUserDAO(UserDAO userDAO) {

this.userDAO = userDAO;

}

@Test

public void test1() {

ClassPathXmlApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");

UserService service = (UserService)app.getBean("userService");//所有对象通过spring方式获取

service.saveUser();

}

<bean name="userService" class="com.ioc.service.UserService"/>