Question

我是新来的。我有以下课程。的 1。接口

public interface AccountService {

public void transferMoney(
        long sourceAccountId, long targetAccountId, double amount);

public void depositMoney(long accountId, double amount) throws Exception;

public Account getAccount(long accountId);

}

2。 Aspect Class @方面公共课TimeAOP { long startTime = 0;

@Pointcut("execution(* *.transferMoney(..))")// the pointcut expression
private void anyOldTransfer() {}// the pointcut signature

@After("anyOldTransfer()")
public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
    long elapsedTime = System.nanoTime() - startTime;
    String className = target.getClass().getCanonicalName();
    String methodName = method.getName();
    System.out.println("Execution of " + className + "#" + methodName
            + " ended in " + new BigDecimal(elapsedTime).divide(
            new BigDecimal(1000000)) + " milliseconds");

}

@Before("anyOldTransfer()")
public void before(Method method, Object[] args, Object target) throws Throwable {
    System.out.println("Starting");
    startTime = System.nanoTime();
}

}

3。配置类

@Configuration
@EnableAspectJAutoProxy
@ComponentScan(basePackages = "com.xxx")
public class Ch2BeanConfiguration {
@Bean
public AccountService accountService() {
    AccountServiceImpl bean = new AccountServiceImpl();
    bean.setAccountDao(accountDao());
    return bean;
}

@Bean
public AccountDao accountDao() {
    AccountDaoInMemoryImpl bean = new AccountDaoInMemoryImpl();
    //depedencies of accountDao bean will be injected here...
    return bean;
}
}

4。测试类

public class Main {
public static void main(String[] args){
    AnnotationConfigApplicationContext applicationContext =
            new AnnotationConfigApplicationContext(Ch2BeanConfiguration.class);
    AccountService accountService = applicationContext.getBean("accountService",
            AccountService.class);
    System.out.println("Before money transfer");
    System.out.println("Account 1 balance :" + accountService.getAccount(1).getBalance());
    System.out.println("Account 2 balance :" + accountService.getAccount(2).getBalance());
    accountService.transferMoney(1, 2, 5.0);
    System.out.println("After money transfer");
    System.out.println("Account 1 balance :" + accountService.getAccount(1).getBalance());
    System.out.println("Account 2 balance :" + accountService.getAccount(2).getBalance());
}
}

输出： 2016年3月6日下午12:27:05 org.springframework.context.annotation.AnnotationConfigApplicationContext prepareRefresh 信息：刷新org.springframework.context.annotation.AnnotationConfigApplicationContext@5d099f62：启动日期[Sun Mar 06 12:27:05 2016];上下文层次结构的根汇款之前账户1余额：10.0 账户2余额：20.0 汇款后账户1余额：5.0 账户2余额：25.0

永远不会执行AOP。任何人都可以帮助我？

Answer 1

由于您不使用XML，因此您需要从@Configuration返回Aspect bean

@Bean
public TimeAOP timeAspect() {
    return new TimeAOP();
}

Spring AOP不能正常工作

1 个答案: