springboot-aop实现日志记录

1. 首先创建一个springboot项目，引入必要的依赖

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
    </dependencies>

2. 创建一个日志注解

@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface Log {
    String value() default "";
}

3. 创建一个切面

@Component
@Aspect
public class LogAspect {

    @Autowired
    private HttpServletRequest request;
    @Autowired
    private LogMapper logMapper;

    @Pointcut("@annotation(top.kooper.demo.log.annotation.Log)")
    public void pointcut() {}

    @Around("pointcut()")
    public Object around(ProceedingJoinPoint joinPoint) throws Throwable {
        long start = System.currentTimeMillis();
		//执行方法
        Object proceed = joinPoint.proceed();

        Object[] args = joinPoint.getArgs();
        for (Object object :
                args) {
            System.out.println("参数："+object.toString());
        }

        MethodSignature methodSignature = (MethodSignature)joinPoint.getSignature();
        Method method = methodSignature.getMethod();
        System.out.println("方法名："+method.getName());

        Signature signature = joinPoint.getSignature();
        String declaringTypeName = signature.getDeclaringTypeName();
        System.out.println("declaringTypeName:"+declaringTypeName);

        String name = signature.getName();
        System.out.println("name:"+name);

        //todo 写记录日志内容的业务代码

        return proceed;
    }
}

至此结束