SpringBoot使用AOP實現統計全域性介面存取次數詳解

		<!--引入AOP依賴-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <!--AOP-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.9.4</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.4</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.2.12</version>
        </dependency>

import java.util.concurrent.atomic.AtomicInteger;
public class AtomicCounter {
    private static final AtomicCounter atomicCounter = new AtomicCounter();
    /**
     * 單例，不允許外界主動範例化
     */
    private AtomicCounter() {
    }
    public static AtomicCounter getInstance() {
        return atomicCounter;
    }
    private static AtomicInteger counter = new AtomicInteger();
    public int getValue() {
        return counter.get();
    }
    public int increase() {
        return counter.incrementAndGet();
    }
    public int decrease() {
        return counter.decrementAndGet();
    }
    // 清零
    public void toZero(){
        counter.set(0);
    }
}

@Component
@Aspect
public class GlobalActuator {
    private static final Logger log = LoggerFactory.getLogger(GlobalActuator.class);
    @Resource
    private StringRedisTemplate stringRedisTemplate;
    ThreadLocal<Long> startTime = new ThreadLocal<>();
    ConcurrentHashMap<Object, Object> countMap = new ConcurrentHashMap<Object, Object>();
    /**
     * 匹配控制層層通知 這裡監控controller下的所有介面
     */
    @Pointcut("execution(* com.sf.controller.*Controller.*(..))")
    private void controllerPt() {
    }
    /**
     * 在介面原有的方法執行前，將會首先執行此處的程式碼
     */
    @Before("com.sf.actuator.GlobalActuator.controllerPt()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        startTime.set(System.currentTimeMillis());
        //獲取傳入目標方法的引數
        Object[] args = joinPoint.getArgs();
    }
    /**
     * 只有正常返回才會執行此方法
     * 如果程式執行失敗，則不執行此方法
     */
    @AfterReturning(returning = "returnVal", pointcut = "com.sf.actuator.GlobalActuator.controllerPt()")
    public void doAfterReturning(JoinPoint joinPoint, Object returnVal) throws Throwable {
        Signature signature = joinPoint.getSignature();
        String declaringName = signature.getDeclaringTypeName();
        String methodName = signature.getName();
        String mapKey = declaringName + methodName;
        // 執行成功則計數加一
        int increase = AtomicCounter.getInstance().increase();
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        synchronized (this) {
        //在專案啟動時，需要在Redis中讀取原有的介面請求次數
            if (countMap.size() == 0) {
                JSONObject jsonObject = RedisUtils.objFromRedis(StringConst.INTERFACE_ACTUATOR);
                if (jsonObject != null) {
                    Set<String> strings = jsonObject.keySet();
                    for (String string : strings) {
                        Object o = jsonObject.get(string);
                        countMap.putIfAbsent(string, o);
                    }
                }
            }
        }
        // 如果此次存取的介面不在countMap，放入countMap
        countMap.putIfAbsent(mapKey, 0);
        countMap.compute(mapKey, (key, value) -> (Integer) value + 1);
        synchronized (this) {
            // 記憶體計數達到30 更新redis
            if (increase == 30) {
                RedisUtils.objToRedis(StringConst.INTERFACE_ACTUATOR, countMap, Constants.AVA_REDIS_TIMEOUT);
                //刪除過期時間
                stringRedisTemplate.persist(StringConst.INTERFACE_ACTUATOR);
                //計數器置為0
                AtomicCounter.getInstance().toZero();
            }
        }
        //log.info("方法執行次數:" + mapKey + "------>" + countMap.get(mapKey));
        //log.info("URI:[{}], 耗費時間:[{}] ms", request.getRequestURI(), System.currentTimeMillis() - startTime.get());
    }
    /**
     * 當介面報錯時執行此方法
     */
    @AfterThrowing(pointcut = "com.sf.actuator.GlobalActuator.controllerPt()")
    public void doAfterThrowing(JoinPoint joinPoint) {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        log.info("介面存取失敗，URI:[{}], 耗費時間:[{}] ms", request.getRequestURI(), System.currentTimeMillis() - startTime.get());
    }
}

    @GetMapping("/interface/{intCount}")
    @ApiOperation(value = "查詢介面成功存取次數（預設倒序）")
    public Result<List<InterfaceDto>> findInterfaceCount(
            @ApiParam(name = "intCount", value = "需要的介面數") @PathVariable Integer intCount
    ) {
        HashMap<String, Integer> hashMap = new HashMap<>();
        JSONObject jsonObject = RedisUtils.objFromRedis(StringConst.INTERFACE_ACTUATOR);
        if (jsonObject != null) {
            Set<String> strings = jsonObject.keySet();
            for (String string : strings) {
                Integer o = (Integer) jsonObject.get(string);
                hashMap.putIfAbsent(string, o);
            }
        }
        //根據value倒序
        Map<String, Integer> sortedMap = hashMap.entrySet().stream().sorted(Collections.reverseOrder(Map.Entry.comparingByValue()))
                .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (e1, e2) -> e1, LinkedHashMap::new));
        //返回列表
        List<InterfaceDto> resultList = new ArrayList<>();
        //排序後中的map中所有的key
        Object[] objects = sortedMap.keySet().toArray();
        for (int i = 0; i < intCount; i++) {
            InterfaceDto interfaceDto = new InterfaceDto();
            interfaceDto.setName((String) objects[i]);
            interfaceDto.setCount(sortedMap.get((String) objects[i]));
            resultList.add(interfaceDto);
        }
        return Result.success(resultList);
    }