spring.redis.host=localhost
spring.redis.port=6379
spring.redis.password=123

@Component
public class RedisCache {
    @Autowired
    public RedisTemplate redisTemplate;
    public <T> void setCacheObject(final String key, final T value, final Integer timeout, final TimeUnit timeUnit) {
        redisTemplate.opsForValue().set(key, value, timeout, timeUnit);
    }
    public <T> T getCacheObject(final String key) {
        ValueOperations<String, T> operation = redisTemplate.opsForValue();
        return operation.get(key);
    }
}

@Inherited
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface RepeatSubmit {
    /**
     * 間隔時(shí)間(ms)，小于此時(shí)間視為重復(fù)提交
     */
    public int interval() default 5000;

    /**
     * 提示消息
     */
    public String message() default "不允許重復(fù)提交，請(qǐng)稍候再試";
}

public abstract class RepeatSubmitInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null) {
                if (this.isRepeatSubmit(request, annotation)) {
                    Map<String, Object> map = new HashMap<>();
                    map.put("status", 500);
                    map.put("msg", annotation.message());
                    response.setContentType("application/json;charset=utf-8");
                    response.getWriter().write(new ObjectMapper().writeValueAsString(map));
                    return false;
                }
            }
            return true;
        } else {
            return true;
        }
    }

    /**
     * 驗(yàn)證是否重復(fù)提交由子類實(shí)現(xiàn)具體的防重復(fù)提交的規(guī)則
     *
     * @param request
     * @return
     * @throws Exception
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation);
}

@Component
public class SameUrlDataInterceptor extends RepeatSubmitInterceptor {
    public final String REPEAT_PARAMS = "repeatParams";

    public final String REPEAT_TIME = "repeatTime";
    public final static String REPEAT_SUBMIT_KEY = "REPEAT_SUBMIT_KEY";

    private String header = "Authorization";

    @Autowired
    private RedisCache redisCache;

    @SuppressWarnings("unchecked")
    @Override
    public boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation) {
        String nowParams = "";
        if (request instanceof RepeatedlyRequestWrapper) {
            RepeatedlyRequestWrapper repeatedlyRequest = (RepeatedlyRequestWrapper) request;
            try {
                nowParams = repeatedlyRequest.getReader().readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        // body參數(shù)為空，獲取Parameter的數(shù)據(jù)
        if (StringUtils.isEmpty(nowParams)) {
            try {
                nowParams = new ObjectMapper().writeValueAsString(request.getParameterMap());
            } catch (JsonProcessingException e) {
                e.printStackTrace();
            }
        }
        Map<String, Object> nowDataMap = new HashMap<String, Object>();
        nowDataMap.put(REPEAT_PARAMS, nowParams);
        nowDataMap.put(REPEAT_TIME, System.currentTimeMillis());

        // 請(qǐng)求地址（作為存放cache的key值）
        String url = request.getRequestURI();

        // 唯一值（沒有消息頭則使用請(qǐng)求地址）
        String submitKey = request.getHeader(header);

        // 唯一標(biāo)識(shí)（指定key + url + 消息頭）
        String cacheRepeatKey = REPEAT_SUBMIT_KEY + url + submitKey;

        Object sessionObj = redisCache.getCacheObject(cacheRepeatKey);
        if (sessionObj != null) {
            Map<String, Object> sessionMap = (Map<String, Object>) sessionObj;
            if (compareParams(nowDataMap, sessionMap) && compareTime(nowDataMap, sessionMap, annotation.interval())) {
                return true;
            }
        }
        redisCache.setCacheObject(cacheRepeatKey, nowDataMap, annotation.interval(), TimeUnit.MILLISECONDS);
        return false;
    }

    /**
     * 判斷參數(shù)是否相同
     */
    private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap) {
        String nowParams = (String) nowMap.get(REPEAT_PARAMS);
        String preParams = (String) preMap.get(REPEAT_PARAMS);
        return nowParams.equals(preParams);
    }

    /**
     * 判斷兩次間隔時(shí)間
     */
    private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap, int interval) {
        long time1 = (Long) nowMap.get(REPEAT_TIME);
        long time2 = (Long) preMap.get(REPEAT_TIME);
        if ((time1 - time2) < interval) {
            return true;
        }
        return false;
    }
}

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Autowired
    RepeatSubmitInterceptor repeatSubmitInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(repeatSubmitInterceptor)
                .addPathPatterns("/**");
    }
}

@RestController
public class HelloController {

    @PostMapping("/hello")
    @RepeatSubmit(interval = 100000)
    public String hello(@RequestBody String msg) {
        System.out.println("msg = " + msg);
        return "hello";
    }
}