90b5118e45
- 后端: JPQL构造器投影排除LONGTEXT大字段(uploadedImages/videoReferenceImages) - 后端: DTO层过滤非分镜图类型的base64内联resultUrl - 前端: 列表缩略图从video改为img loading=lazy，消除172并发请求 - 前端: download函数增加resultUrl懒加载(详情接口兜底) - 文档: 新增性能优化报告 docs/performance-optimization-report.md
113 lines
3.2 KiB
Java
113 lines
3.2 KiB
Java
package com.example.demo.service;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.scheduling.annotation.Scheduled;
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import org.springframework.stereotype.Service;
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import java.time.Duration;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* 在线统计服务
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* 通过IP地址统计当天访问的独立用户数
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*/
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@Service
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public class OnlineStatsService {
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private static final Logger logger = LoggerFactory.getLogger(OnlineStatsService.class);
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// 存储当天访问过的IP地址（使用Set去重）
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private final Set<String> todayVisitors = ConcurrentHashMap.newKeySet();
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// 记录当前日期，用于判断是否需要重置
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private volatile LocalDate currentDate = LocalDate.now();
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// 系统启动时间
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private final LocalDateTime startTime = LocalDateTime.now();
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/**
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* 记录访问IP
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* @param ip 访问者IP地址
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*/
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public void recordVisit(String ip) {
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if (ip == null || ip.isEmpty()) {
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return;
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}
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// 检查是否需要重置（新的一天）
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checkAndResetIfNewDay();
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// 添加IP到今日访客列表
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todayVisitors.add(ip);
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}
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/**
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* 获取当天在线人数（独立IP数）
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* @return 当天访问的独立IP数量
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*/
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public int getTodayVisitorCount() {
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checkAndResetIfNewDay();
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return todayVisitors.size();
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}
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/**
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* 检查是否是新的一天，如果是则重置统计
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*/
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private void checkAndResetIfNewDay() {
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LocalDate today = LocalDate.now();
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if (!today.equals(currentDate)) {
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synchronized (this) {
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if (!today.equals(currentDate)) {
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logger.info("新的一天开始，重置在线统计。昨日访客数: {}", todayVisitors.size());
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todayVisitors.clear();
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currentDate = today;
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}
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}
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}
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}
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/**
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* 每天凌晨0点重置统计
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*/
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@Scheduled(cron = "0 0 0 * * ?")
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public void resetDailyStats() {
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logger.info("定时任务：重置每日在线统计。昨日访客数: {}", todayVisitors.size());
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todayVisitors.clear();
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currentDate = LocalDate.now();
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}
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/**
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* 获取系统运行时间（格式化为 X小时X分）
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* @return 运行时间字符串
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*/
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public String getUptime() {
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Duration duration = Duration.between(startTime, LocalDateTime.now());
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long hours = duration.toHours();
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long minutes = duration.toMinutes() % 60;
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if (hours > 0) {
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return hours + "小时" + minutes + "分";
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} else {
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return minutes + "分钟";
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}
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}
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/**
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* 获取统计信息
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* @return 包含统计数据的Map
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*/
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public Map<String, Object> getStats() {
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checkAndResetIfNewDay();
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Map<String, Object> stats = new ConcurrentHashMap<>();
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stats.put("todayVisitors", todayVisitors.size());
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stats.put("date", currentDate.toString());
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stats.put("uptime", getUptime());
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return stats;
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}
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}
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