@Service
public class UserService {
    @Transactional
    public void createUser(String name) {
        System.out.println("創(chuàng)建用戶: " + name);
        if (name.equals("error")) {
            throw new RuntimeException("模擬異常");
        }
    }
}
@Aspect
@Component
public class LoggingAspect {
    @Before("execution(* com.example.service..*.*(..))")
    public void logBefore(JoinPoint jp) {
        System.out.println("日志前置: " + jp.getSignature());
    }
    @AfterReturning("execution(* com.example.service..*.*(..))")
    public void logAfter(JoinPoint jp) {
        System.out.println("日志后置: " + jp.getSignature());
    }
}

flowchart TD
    A[方法調(diào)用] --> B[LoggingAspect @Before]
    B --> C[TransactionInterceptor @Around 前開啟事務(wù)]
    C --> D[執(zhí)行目標(biāo)方法]
    D -->|正常返回| E[TransactionInterceptor 提交事務(wù)]
    D -->|異常拋出| F[TransactionInterceptor 回滾事務(wù)]
    E --> G[LoggingAspect @AfterReturning]
    F --> H[LoggingAspect @AfterThrowing]
    G --> I[返回客戶端]
    H --> I

@Aspect
@Component
public class ExceptionAspect {
    @AfterThrowing(pointcut = "execution(* com.example.service..*.*(..))", throwing = "ex")
    public void logException(JoinPoint jp, Throwable ex) {
        System.out.println("捕獲異常: " + ex.getMessage() + " 方法: " + jp.getSignature());
    }
}

@Aspect
@Component
@Order(1)
public class LoggingAspect {
    @Before("execution(* com.example.service..*.*(..))")
    public void before(JoinPoint jp) { System.out.println("日志前置"); }
}
@Aspect
@Component
@Order(2)
public class TransactionAspect {
    @Around("execution(* com.example.service..*.*(..))")
    public Object around(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("事務(wù)開始");
        try {
            Object result = pjp.proceed();
            System.out.println("事務(wù)提交");
            return result;
        } catch (Throwable ex) {
            System.out.println("事務(wù)回滾");
            throw ex;
        }
    }
}
@Aspect
@Component
@Order(3)
public class MetricsAspect {
    @AfterReturning("execution(* com.example.service..*.*(..))")
    public void afterReturning(JoinPoint jp) { System.out.println("性能監(jiān)控"); }
}

flowchart TD
    A[方法調(diào)用] --> B[LoggingAspect @Before]
    B --> C[TransactionAspect @Around 前]
    C --> D[目標(biāo)方法執(zhí)行]
    D -->|正常| E[TransactionAspect 提交事務(wù)]
    D -->|異常| F[TransactionAspect 回滾事務(wù)]
    E --> G[MetricsAspect @AfterReturning]
    F --> H[異常處理切面執(zhí)行]
    G --> I[返回客戶端]
    H --> I