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105 lines
2.7 KiB
Java
105 lines
2.7 KiB
Java
package com.jsowell.pile.util;
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import com.google.common.collect.Lists;
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import com.jsowell.common.constant.CacheConstants;
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import com.jsowell.common.core.redis.RedisCache;
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import com.jsowell.common.util.StringUtils;
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import com.jsowell.pile.domain.PileBasicInfo;
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import com.jsowell.pile.service.IPileBasicInfoService;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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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.LocalDate;
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import java.util.List;
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/**
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* 生成sn号Util
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*/
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@Component
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public class SnUtils {
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private static Logger logger = LoggerFactory.getLogger(SnUtils.class);
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@Autowired
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private RedisCache redisCache;
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@Autowired
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private IPileBasicInfoService pileBasicInfoService;
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private String prefix = "88";
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/**
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* 获取递增的序列号
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* 充电桩编号定义为14位: 固定位88 + 年份23 + 10位自增数字不足补0
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* @param prefix 生成序列号的前缀
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* @return
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*/
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public String getPileSn(String prefix) {
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//序列号前缀加特定标识，如系统模块名之类的 防止重复
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String key = CacheConstants.PILE_SN_GENERATE_KEY + prefix;
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String increResult = null;
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try {
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// 取缓存
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Integer pileNum = redisCache.getCacheObject(key);
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if (pileNum == null) {
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// 缓存中没有，从数据库中取
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PileBasicInfo pileInfo = pileBasicInfoService.getMaxNumPileInfo();
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String pileSn = pileInfo.getSn();
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// 将前四位截取，并将后面转为long
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Long pileSnNum = Long.parseLong(StringUtils.substring(pileSn, 4, pileSn.length()));
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// String pileSnNum = StringUtils.substring(pileSn, 4, pileSn.length());
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// 再将该值存入数据库
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redisCache.setCacheObject(key, pileSnNum.intValue());
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}
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Long increNum = redisCache.increment(key, 1);
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// 年份
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int year = LocalDate.now().getYear() - 2000;
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//不足补位
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increResult = prefix + year + String.format("%1$010d", increNum);
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} catch (Exception e) {
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logger.error("获取序列号失败", e);
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}
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return increResult;
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}
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public static void main(String[] args) {
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// String pileSn = "88230000002060";
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// String substring = StringUtils.substring(pileSn, 4, pileSn.length());
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// long l = Long.parseLong(substring);
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// System.out.println(substring);
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// System.out.println(l);
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Long a = 3147483647L;
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}
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/**
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* 生成sn号
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*
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* @return
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*/
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public List<String> generateSN() {
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return generateSN(1);
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}
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/**
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* 批量生成sn号
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*
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* @param size
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* @return
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*/
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public List<String> generateSN(int size) {
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List<String> resultList = Lists.newArrayList();
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if (size <= 0) {
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return resultList;
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}
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for (int i = 0; i < size; i++) {
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resultList.add(getPileSn(prefix));
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}
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return resultList;
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}
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}
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