java接口定义统一的异常处理，aop

   获取完整的方法名，包含包名、类名、方法名

joinPoint.getTarget().getClass().getName()+"."+joinPoint.getSignature().getName()

 aop中获取请求对象

        RequestAttributes ra = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes sra = (ServletRequestAttributes) ra;
        HttpServletRequest request = sra.getRequest();

 

 

环绕通知获取方法入参的方法

 Object[] args = joinPoint.getArgs();

 

 

  指定拦截带有注解的写法

  

    @Pointcut("@annotation(com.springboot_aop.abc)")
    public void homeWorkPointcut() {
        System.out.println();
    }

 

            Object[] args = joinPoint.getArgs();//获取所有参数

            MethodSignature sign = (MethodSignature) joinPoint.getSignature();
            Method method = sign.getMethod();//获取当前方法
            MQ annotation = method.getAnnotation(MQ.class);//获取是否有注解
            if(annotation!=null){
                
            }
            for (int k = 0; k < args.length; k++) {
                Object arg = args[k];
                // 获取对象类型
                String typeName = arg.getClass().getTypeName();
                System.out.println(typeName);
            }

 如果获取不到注解  ，则需要将你的注解定义成运行时保存

@Retention(RetentionPolicy.RUNTIME)
public @interface MQ {

    String a() default "";

}

还有一种简单的方式获取注解，

    @Around("testMQ() && @annotation(mq)")
    public Object deAround(ProceedingJoinPoint joinPoint,MQ mq) throws Throwable {}

 获取url里面的参数，获取url后面的参数

        RequestAttributes ra = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes sra = (ServletRequestAttributes) ra;
        HttpServletRequest request = sra.getRequest();
        String queryString = request.getQueryString();
        if(StringUtils.isEmpty(queryString)|| !queryString.contains("token")){
            throw new RuntimeException("接口调用验证不通过");
        }
        queryString = queryString.substring(queryString.indexOf("token=")+6);
        if(queryString.contains("&")){
            queryString=queryString.substring(0,queryString.indexOf("&"));
        }
        log.info("token------------------------"+queryString);

        Object o = redisTemplate.opsForValue().get(APP_PREFIX+queryString);
        log.info("token()认证—==="+JSON.toJSONString(o));
        if(o==null){
            throw new RuntimeException("用户未登录");
        }

统一异常处理，aop

@Pointcut("execution(public * com.lyh.prom.modules.web.*.*(..))")限制定义公共方法

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;

@Aspect
@Component
public class TestAop {


    /**
     * 定义切入点
     */
    @Pointcut("execution(* com.springboot_aop.controller.*.*(..))")
    public void homeWorkPointcut() {
        System.out.println();
    }


    @Before("homeWorkPointcut()")
    public void test01() {
        System.out.println("执行前///////");
    }

    @After("homeWorkPointcut()")
    public void test02() {
        System.out.println("执行后////");
    }

    @Around("homeWorkPointcut()")
    public Object deAround(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("环绕前/////");
        try {
            return  joinPoint.proceed();
        }catch (Throwable e){
            Map<String, Object> data = new HashMap<>();
            data.put("code","500");
            data.put("msg",e.getMessage());
            e.printStackTrace();
            return data;

        }
    }

}

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