常用的时间段的时间戳

  1. 获取 昨天这个时间的时间戳
java 复制代码
        Calendar calendar = Calendar.getInstance();     //当前时间
        calendar.add(Calendar.DAY_OF_YEAR,-1);  
        Long dd = calendar.getTime().getTime()/1000;
        System.out.println(dd);
  1. 计算今天0点的时间戳
java 复制代码
       Long  time = System.currentTimeMillis();  //当前时间的时间戳
       long zero = time/(1000*3600*24)*(1000*3600*24) - TimeZone.getDefault().getRawOffset();
       System.out.println(new Timestamp(zero));//今天零点零分零秒
       System.out.println(zero/1000);
  1. 计算今天23点59分59秒的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH),23,59,59);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算昨天0点的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)-1,0,0,0);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算昨天23:59:59 秒的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)-1,23,59,59);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算近7日 0点的时间戳(不包含当天)
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)-7,0,0,0);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算近30天 0点的时间戳(不包含当天)
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)-30,0,0,0);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算上月第一天 0点的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH)-1,1,0,0,0);
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
  1. 计算上月最后一天 23点的时间戳
java 复制代码
    Calendar calendar = Calendar.getInstance();            
    calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH)-1,calendar.get(Calendar.DAY_OF_MONTH),23,59,59);
    calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
    long tt = calendar.getTime().getTime()/1000;
    System.out.println(tt)
  1. 计算上周周一 0点的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONDAY), calendar.get(Calendar.DAY_OF_MONTH), 0, 0,0);
     calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
     calendar.add(Calendar.DATE,-7);
     System.out.println(calendar.getTime().getTime()/1000);
  1. 计算上周周日23点的时间戳
java 复制代码
  Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONDAY), calendar.get(Calendar.DAY_OF_MONTH), 23, 59,59);
     calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
     calendar.add(Calendar.DATE,-1);
     System.out.println(calendar.getTime().getTime()/1000);
  1. 计算本月第一天0点的时间戳
java 复制代码
     Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONDAY), calendar.get(Calendar.DAY_OF_MONTH), 0, 0,0);
     calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
     long tt = calendar.getTime().getTime()/1000;
    System.out.println(tt);
  1. 计算本月最后一天23:59:59的时间戳
java 复制代码
    Calendar calendar = Calendar.getInstance();
     calendar.set(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONDAY), calendar.get(Calendar.DAY_OF_MONTH), 23, 59,59);
     calendar.set(Calendar.DAY_OF_MONTH,calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
     long tt = calendar.getTime().getTime()/1000;
     System.out.println(tt);
相关推荐
kfyty725几秒前
不依赖第三方,不销毁重建,loveqq 框架如何原生实现动态线程池?
java·架构
isysc11 小时前
面了一个校招生,竟然说我是老古董
java·后端·面试
道可到5 小时前
Java 反射现代实践速查表(JDK 11+/17+)
java
道可到5 小时前
Java 反射现代实践指南(JDK 11+ / 17+ 适用)
java
玉衡子5 小时前
九、MySQL配置参数优化总结
java·mysql
叽哥5 小时前
Kotlin学习第 8 课:Kotlin 进阶特性:简化代码与提升效率
android·java·kotlin
麦兜*5 小时前
MongoDB Atlas 云数据库实战:从零搭建全球多节点集群
java·数据库·spring boot·mongodb·spring·spring cloud
带刺的坐椅5 小时前
DamiBus v1.1.0 发布(给单体多模块解耦)
java·事件总线·damibus
葡萄城技术团队5 小时前
用 Java 构建健壮 REST API 的 4 个关键技巧
java
杨杨杨大侠5 小时前
解密 atlas-mapper 框架 (9/10):故障排查与调试技巧
java·开源·github