接口限制
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147
src/main/java/com/sqx/common/utils/ApiAccessLimitUtil.java
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147
src/main/java/com/sqx/common/utils/ApiAccessLimitUtil.java
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package com.sqx.common.utils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import java.time.DayOfWeek;
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import java.time.LocalDate;
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import java.time.ZoneOffset;
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import java.time.temporal.TemporalAdjusters;
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import java.util.Objects;
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/**
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* 接口访问次数 月为单位
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*/
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@Component
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public class ApiAccessLimitUtil {
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private static final String ACCESS_COUNT_KEY_PREFIX = "sys:limit:";
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private static RedisUtils redisUtils;
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private static final int DEFAULT_ACCESS_COUNT = 5;
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private static final String DATE_TIME_FORMAT = "month";
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@Autowired
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public void setRedisUtils(RedisUtils redisUtils) {
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ApiAccessLimitUtil.redisUtils = redisUtils;
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}
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/**
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* 默认 当月5次
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* @param id 唯一值
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* @param key 接口名称 sys:limit:接口名称
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* @return
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*/
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public static boolean isAccessAllowed(String id, String key) {
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String redisKey = generateRedisKey(key, id);
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Object countObj = redisUtils.get(redisKey);
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if (countObj == null) {
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// 根据不同时间周期设置过期时间并初始化访问次数为1
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long expireAt = calculateExpireAt(DATE_TIME_FORMAT);
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redisUtils.set(redisKey, 1, expireAt);
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return true;
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}
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if ((int) countObj < DEFAULT_ACCESS_COUNT) {
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// 访问次数未达上限,次数加1
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redisUtils.incr(redisKey);
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return true;
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}
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return false;
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}
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/**
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* 默认月 month/月/自然月
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* @param id 唯一值
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* @param key 接口名称 sys:limit:接口名称
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* @param count 次数限制
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* @return
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*/
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public static boolean isAccessAllowed(String id, String key, Integer count) {
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String redisKey = generateRedisKey(key, id);
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Object countObj = redisUtils.get(redisKey);
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if (countObj == null) {
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// 根据不同时间周期设置过期时间并初始化访问次数为1
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long expireAt = calculateExpireAt(DATE_TIME_FORMAT);
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redisUtils.set(redisKey, 1, expireAt);
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return true;
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}
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if ((int) countObj < count) {
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// 访问次数未达上限,次数加1
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redisUtils.incr(redisKey);
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return true;
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}
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return false;
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}
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/**
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* 默认 5次
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* @param id 唯一值
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* @param key 接口名称 sys:limit:接口名称
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* @param timeFormat day/天/自然天 week/周/本周日 month/月/自然月 year/年/自然年
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* @return
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*/
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public static boolean isAccessAllowed(String id, String key, String timeFormat) {
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String redisKey = generateRedisKey(key, id);
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Object countObj = redisUtils.get(redisKey);
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if (countObj == null) {
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// 根据不同时间周期设置过期时间并初始化访问次数为1
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long expireAt = calculateExpireAt(timeFormat);
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redisUtils.set(redisKey, 1, expireAt);
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return true;
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}
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if ((int) countObj < DEFAULT_ACCESS_COUNT) {
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// 访问次数未达上限,次数加1
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redisUtils.incr(redisKey);
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return true;
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}
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return false;
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}
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/**
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* @param id 唯一值
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* @param key 接口名称 sys:limit:接口名称
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* @param count 次数限制
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* @param timeFormat day/天/自然天 week/周/本周日 month/月/自然月 year/年/自然年
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* @return
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*/
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public static boolean isAccessAllowed(String id, String key, Integer count, String timeFormat) {
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String redisKey = generateRedisKey(key, id);
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Object countObj = redisUtils.get(redisKey);
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if (countObj == null) {
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// 根据不同时间周期设置过期时间并初始化访问次数为1
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long expireAt = calculateExpireAt(timeFormat);
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redisUtils.set(redisKey, 1, expireAt);
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return true;
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}
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if ((int) countObj < count) {
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// 访问次数未达上限,次数加1
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redisUtils.incr(redisKey);
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return true;
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}
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return false;
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}
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private static String generateRedisKey(String key, String id) {
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return ACCESS_COUNT_KEY_PREFIX + key + ":" + id;
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}
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private static long calculateExpireAt(String timePeriod) {
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LocalDate now = LocalDate.now();
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LocalDate expireDate = null;
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if ("day".equals(timePeriod)) {
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expireDate = now.plusDays(1).atStartOfDay().toLocalDate();
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} else if ("week".equals(timePeriod)) {
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expireDate = now.plusWeeks(0).with(TemporalAdjusters.nextOrSame(java.time.DayOfWeek.SUNDAY));
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} else if ("month".equals(timePeriod)) {
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expireDate = now.plusMonths(1).withDayOfMonth(1).minusDays(1);
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} else if ("year".equals(timePeriod)) {
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expireDate = now.plusYears(1).withDayOfYear(1).minusDays(1);
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}
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return Objects.requireNonNull(expireDate).atTime(23, 59, 59).toEpochSecond(ZoneOffset.UTC);
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}
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}
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@@ -128,6 +128,21 @@ public class RedisUtils {
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return get(key, NOT_EXPIRE);
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}
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/**
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* 对指定的键执行自增操作,返回自增后的值
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*
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* @param key 要自增的键
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* @return 自增后的值,如果键不存在则初始化为1后返回1,如果出现异常返回null
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*/
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public Long incr(String key) {
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try {
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return redisTemplate.opsForValue().increment(key);
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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public void delete(String key) {
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redisTemplate.delete(key);
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}
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