package com.talentcard.server.business.auth;
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import java.nio.charset.StandardCharsets;
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import java.security.MessageDigest;
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import java.security.SecureRandom;
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import java.time.LocalDateTime;
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import java.util.Base64;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import com.talentcard.server.business.DatabaseRows;
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import com.talentcard.server.common.BusinessException;
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import com.talentcard.server.common.ErrorCode;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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@Service
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public class TalentAuthService {
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private static final SecureRandom RANDOM = new SecureRandom();
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private static final int ACCESS_TOKEN_HOURS = 2;
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private static final int REFRESH_TOKEN_DAYS = 30;
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private final JdbcTemplate jdbc;
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private final WeChatMiniProgramClient weChat;
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public TalentAuthService(JdbcTemplate jdbc, WeChatMiniProgramClient weChat) {
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this.jdbc = jdbc;
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this.weChat = weChat;
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}
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@Transactional
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public Map<String, Object> login(TalentLoginRequest request) {
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String openId = weChat.exchangeOpenId(request.wechatCode());
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String mobile = weChat.exchangePhoneNumber(request.phoneCode());
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return establishSession(openId, mobile);
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}
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@Transactional
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public Map<String, Object> createDevelopmentSession(long talentId) {
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List<Map<String, Object>> talents = rows("""
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select id, openid
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from talent_user
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where id = ? and deleted = 0 and status = 1
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limit 1 for update
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""", talentId);
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if (talents.isEmpty()) throw new BusinessException(ErrorCode.NOT_FOUND, "开发测试人才账号不存在或不可用");
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Object openId = talents.get(0).get("openid");
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if (openId == null || String.valueOf(openId).isBlank()) {
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throw new BusinessException(ErrorCode.CONFLICT, "开发测试人才账号未配置微信标识");
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}
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return issueSession(talentId);
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}
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@Transactional
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public Map<String, Object> refresh(TalentRefreshRequest request) {
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List<Map<String, Object>> sessions = rows("""
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select s.id, s.talent_id
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from talent_session s
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join talent_user t on t.id = s.talent_id and t.deleted = 0 and t.status = 1
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where s.refresh_token_hash = ? and s.revoked_at is null and s.refresh_expires_at > now()
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limit 1 for update
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""", sha256(request.refreshToken().trim()));
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if (sessions.isEmpty()) throw new BusinessException(ErrorCode.UNAUTHORIZED, "登录已失效，请重新登录");
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Map<String, Object> session = sessions.get(0);
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String accessToken = token();
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String refreshToken = token();
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LocalDateTime accessExpiresAt = LocalDateTime.now().plusHours(ACCESS_TOKEN_HOURS);
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LocalDateTime refreshExpiresAt = LocalDateTime.now().plusDays(REFRESH_TOKEN_DAYS);
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jdbc.update("""
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update talent_session
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set access_token_hash = ?, refresh_token_hash = ?, access_expires_at = ?, refresh_expires_at = ?, last_used_at = now()
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where id = ?
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""", sha256(accessToken), sha256(refreshToken), accessExpiresAt, refreshExpiresAt, session.get("id"));
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return sessionResult(number(session.get("talentId")), accessToken, refreshToken, accessExpiresAt);
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}
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@Transactional
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public Map<String, Object> logout(String authorization) {
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String token = bearerToken(authorization);
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if (!token.isBlank()) {
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jdbc.update("update talent_session set revoked_at = coalesce(revoked_at, now()) where access_token_hash = ?", sha256(token));
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}
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return Map.of("loggedOut", true);
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}
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@Transactional(readOnly = true)
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public TalentSessionPrincipal authenticate(String authorization) {
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String token = bearerToken(authorization);
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if (token.isBlank()) throw new BusinessException(ErrorCode.UNAUTHORIZED, "请先登录");
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List<Map<String, Object>> sessions = rows("""
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select s.talent_id
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from talent_session s
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join talent_user t on t.id = s.talent_id and t.deleted = 0 and t.status = 1
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where s.access_token_hash = ? and s.revoked_at is null and s.access_expires_at > now()
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limit 1
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""", sha256(token));
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if (sessions.isEmpty()) throw new BusinessException(ErrorCode.UNAUTHORIZED, "登录已失效，请重新登录");
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return new TalentSessionPrincipal(number(sessions.get(0).get("talentId")));
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}
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private Map<String, Object> establishSession(String openId, String mobile) {
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List<Map<String, Object>> talents = rows("""
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select id, openid
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from talent_user
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where mobile = ? and deleted = 0 and status = 1
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limit 1 for update
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""", mobile);
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if (talents.isEmpty()) return issueSession(registerVisitor(openId, mobile));
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Map<String, Object> talent = talents.get(0);
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long talentId = number(talent.get("id"));
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List<Map<String, Object>> binding = rows("""
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select t.id,
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exists(select 1 from talent_card c where c.talent_id = t.id and c.deleted = 0 and c.card_type = 'PERSONAL') has_talent_card
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from talent_user t
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where t.openid = ? and t.deleted = 0
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limit 1 for update
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""", openId);
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if (!binding.isEmpty() && number(binding.get(0).get("id")) != talentId) {
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if (number(binding.get(0).get("hasTalentCard")) != 0) {
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throw new BusinessException(ErrorCode.CONFLICT, "当前微信已绑定其他人才账号，请联系管理员");
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}
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jdbc.update("update talent_user set openid = null where id = ?", number(binding.get(0).get("id")));
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}
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jdbc.update("update talent_user set openid = ? where id = ?", openId, talentId);
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return issueSession(talentId);
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}
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private long registerVisitor(String openId, String mobile) {
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List<Map<String, Object>> bindings = rows("""
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select id
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from talent_user
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where openid = ? and deleted = 0 and status = 1
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limit 1 for update
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""", openId);
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if (!bindings.isEmpty()) {
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long talentId = number(bindings.get(0).get("id"));
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jdbc.update("update talent_user set mobile = ? where id = ?", mobile, talentId);
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return talentId;
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}
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jdbc.update("""
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insert into talent_user(openid, name, mobile, talent_level, source_area_type, status)
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values (?, '普通游客', ?, '普通游客', 'LOCAL', 1)
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""", openId, mobile);
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Long talentId = jdbc.queryForObject("select last_insert_id()", Long.class);
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if (talentId == null) throw new BusinessException(ErrorCode.INTERNAL_ERROR, "普通游客注册失败");
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return talentId;
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}
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private Map<String, Object> issueSession(long talentId) {
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jdbc.update("update talent_session set revoked_at = now() where talent_id = ? and revoked_at is null", talentId);
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String accessToken = token();
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String refreshToken = token();
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LocalDateTime accessExpiresAt = LocalDateTime.now().plusHours(ACCESS_TOKEN_HOURS);
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LocalDateTime refreshExpiresAt = LocalDateTime.now().plusDays(REFRESH_TOKEN_DAYS);
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jdbc.update("""
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insert into talent_session(talent_id, access_token_hash, refresh_token_hash, access_expires_at, refresh_expires_at, last_used_at)
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values (?, ?, ?, ?, ?, now())
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""", talentId, sha256(accessToken), sha256(refreshToken), accessExpiresAt, refreshExpiresAt);
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return sessionResult(talentId, accessToken, refreshToken, accessExpiresAt);
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}
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private Map<String, Object> sessionResult(long talentId, String accessToken, String refreshToken, LocalDateTime accessExpiresAt) {
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Map<String, Object> result = new LinkedHashMap<>();
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result.put("talentId", talentId);
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result.put("accessToken", accessToken);
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result.put("refreshToken", refreshToken);
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result.put("expireAt", accessExpiresAt.atZone(java.time.ZoneId.of("Asia/Shanghai")).toInstant().toEpochMilli());
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return result;
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}
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private String token() {
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byte[] bytes = new byte[32];
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RANDOM.nextBytes(bytes);
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return Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
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}
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private String bearerToken(String authorization) {
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return authorization == null ? "" : authorization.replaceFirst("(?i)^Bearer\\s+", "").trim();
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}
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private String sha256(String value) {
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try {
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byte[] digest = MessageDigest.getInstance("SHA-256").digest(value.getBytes(StandardCharsets.UTF_8));
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StringBuilder result = new StringBuilder();
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for (byte item : digest) result.append(String.format("%02x", item));
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return result.toString();
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} catch (Exception exception) {
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throw new IllegalStateException("Unable to process session token", exception);
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}
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}
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private List<Map<String, Object>> rows(String sql, Object... args) {
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return DatabaseRows.normalize(jdbc.queryForList(sql, args));
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}
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private long number(Object value) {
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if (value instanceof Number number) return number.longValue();
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try { return Long.parseLong(String.valueOf(value)); } catch (Exception exception) { throw new BusinessException(ErrorCode.INTERNAL_ERROR, "人才会话数据异常"); }
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}
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}
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