JAVA面向切面编程(AOP)实例

JAVA面向切面编程(AOP)实例

• 定义切面注解

@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@documented
@Inherited
public @interface KpiAspectAnnotation {

    String desc() default "";
}

• 定义切面抽象类

public abstract class AbstractAspectJ {

    
    protected Method getMethod(JoinPoint joinPoint){
        MethodSignature methodSignature = (MethodSignature)joinPoint.getSignature();
        return methodSignature.getMethod();
    }
}

• 切面服务

@Aspect
@Component
public class KipServiceAspect extends AbstractAspectJ {

    private OpbLogger logger = OpbLogger.getLogger(KipServiceAspect.class, JdbcUtil.OSS_OFM.toUpperCase());

    @Pointcut("@annotation(注解的绝对路径)")
    public void serviceMethodPointcut() {
        //切点
    }

    @Before("serviceMethodPointcut()")
    public void doActionBefore(JoinPoint joinPoint){
        // 获取参数
        Object[] args = joinPoint.getArgs();
        AbstractRequest request = (AbstractRequest) args[0];

        logger.debug(request.getRequestNo());
    }
}

• 最后在需要做切入点的方法上加上注解