基于AOP的自定义注解简单实现

1、配置spring bean

2、配置一个aop

	  //对应的bean 切点处理逻辑
		  //切点作用范围
		   //切点具体处理方法
	

3、切点处理逻辑

public Object doAudit(ProceedingJoinPoint point) throws Throwable {
		String methodName = point.getSignature().getName();  //切点的方法
		Class targetClass = point.getTarget().getClass();  //切点的类

		Method[] methods = targetClass.getMethods();
		Method method = null;
		for (int i = 0; i < methods.length; i++) {
			if (methods[i].getName() == methodName) {
				method = methods[i];
				break;
			}
		}

		if (method == null) {
			return point.proceed();
		}

		BigEventAction annotation = (BigEventAction) method.getAnnotation(BigEventAction.class);  //自定义注解对象

		if (annotation == null) {
			return point.proceed();
		}
		Object returnVal = point.proceed();   //切点执行方法
		doBigEvent(annotation);  //具体处理逻辑
		return returnVal;
	}

4、自定义注解接口

@Target({ java.lang.annotation.ElementType.METHOD,
		java.lang.annotation.ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface BigEventAction {
	public abstract String type() default "";
	public abstract String detail() default "";
}

5、注解应用

@BigEventAction(type="添加",detail="日志信息")
public void test(){
}

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