AOP - Advisor 示例

定义通知

public class LoggingAdvice implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.println("Method " + invocation.getMethod().getName() + " is being called");
        return invocation.proceed(); // 继续执行目标方法
    }
}

定义切点

public class LoggingPointcut implements Pointcut {
    @Override
    public ClassFilter getClassFilter() {
        return ClassFilter.TRUE; // 适用于所有类
    }

    @Override
    public MethodMatcher getMethodMatcher() {
        return new NameMatchMethodMatcher() {
            @Override
            public boolean matches(String methodName, Class<?> targetClass) {
                return methodName.startsWith("get"); // 适用于所有以 "get" 开头的方法
            }
        };
    }
}

定义切面类

public class LoggingAdvisor extends DefaultPointcutAdvisor {
    public LoggingAdvisor() {
        super(new LoggingPointcut(), new LoggingAdvice());
    }
}

注册切面

@Configuration
public class AopConfig {
    @Bean
    public LoggingAdvisor loggingAdvisor() {
        return new LoggingAdvisor();
    }
}