spring 事务@Transactional注解位置

@Transactional(propagation = Propagation.REQUIRED)
public interface UserService {
void save();
}

public class UserServiceImpl implements UserService {

public void save() {

}
}

<tx:annotation-driven transaction-manager="sqlTransactionManager" proxy-target-class="true" />
<bean id="userService" class="com.zheyue.authserver.service.impl.UserServiceImpl"></bean>

ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
UserService userService = (UserService)applicationContext.getBean("userService");
userService.save();