package org.dromara.eims.service.impl;
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import lombok.RequiredArgsConstructor;
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import org.dromara.common.core.constant.CacheConstants;
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import org.dromara.common.core.domain.R;
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import org.dromara.common.redis.utils.RedisUtils;
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import org.dromara.eims.service.IGenerateCodeService;
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import org.springframework.stereotype.Service;
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import java.time.LocalDate;
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import java.time.format.DateTimeFormatter;
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@RequiredArgsConstructor
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@Service
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public class GenerateCodeServiceImpl implements IGenerateCodeService {
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@Override
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public String generateCode(String prefix) {
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String key = CacheConstants.EIMS_GENERATE_CODE + ":" + prefix;
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String todayStr = DateTimeFormatter.ofPattern("yyyyMMdd").format(LocalDate.now());
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String code;
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// 使用Redis的原子性操作避免并发问题
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String oldCode = RedisUtils.getCacheObject(key);
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if (oldCode != null && oldCode.contains(todayStr)) {
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int no = Integer.parseInt(oldCode.substring(oldCode.length() - 4));
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code = String.format("%s%s%04d", prefix, todayStr, no + 1);
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} else {
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code = String.format("%s%s%04d", prefix, todayStr, 1);
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}
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// 更新缓存
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try {
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RedisUtils.setCacheObject(key, code);
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return code;
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} catch (Exception e) {
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return null;
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}
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}
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}
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