实现时间显示几天前，几小时前的方法锦集

private final static long minute = 60 * 1000;// 1分钟
private final static long hour = 60 * minute;// 1小时
private final static long day = 24 * hour;// 1天
private final static long month = 31 * day;// 月
private final static long year = 12 * month;// 年
/**
* 返回文字描述的日期
*
* @param date
* @return
*/
public static String getTimeFormatText(Date date) {
if (date == null) {
return null;
}
long diff = new Date().getTime() - date.getTime();
long r = 0;
if (diff > year) {
r = (diff / year);
return r + "年前";
}
if (diff > month) {
r = (diff / month);
return r + "个月前";
}
if (diff > day) {
r = (diff / day);
return r + "天前";
}
if (diff > hour) {
r = (diff / hour);
return r + "个小时前";
}
if (diff > minute) {
r = (diff / minute);
return r + "分钟前";
}
return "刚刚";
}

//JavaScript函数：
var minute = 1000 * 60;
var hour = minute * 60;
var day = hour * 24;
var halfamonth = day * 15;
var month = day * 30;
function getDateDiff(dateTimeStamp){
var now = new Date().getTime();
var diffValue = now - dateTimeStamp;
if(diffValue < 0){
//若日期不符则弹出窗口告之
//alert("结束日期不能小于开始日期！");
}
var monthC =diffValue/month;
var weekC =diffValue/(7*day);
var dayC =diffValue/day;
var hourC =diffValue/hour;
var minC =diffValue/minute;
if(monthC>=1){
result="发表于" + parseInt(monthC) + "个月前";
}
else if(weekC>=1){
result="发表于" + parseInt(weekC) + "周前";
}
else if(dayC>=1){
result="发表于"+ parseInt(dayC) +"天前";
}
else if(hourC>=1){
result="发表于"+ parseInt(hourC) +"个小时前";
}
else if(minC>=1){
result="发表于"+ parseInt(minC) +"分钟前";
}else
result="刚刚发表";
return result;
}

//js函数代码：字符串转换为时间戳
function getDateTimeStamp(dateStr){
return Date.parse(dateStr.replace(/-/gi,"/"));
}

<script>
function jsDateDiff(publishTime){
var d_minutes,d_hours,d_days;
var timeNow = parseInt(new Date().getTime()/1000);
var d;
d = timeNow - publishTime;
d_days = parseInt(d/86400);
d_hours = parseInt(d/3600);
d_minutes = parseInt(d/60);
if(d_days>0 && d_days<4){
return d_days+"天前";
}else if(d_days<=0 && d_hours>0){
return d_hours+"小时前";
}else if(d_hours<=0 && d_minutes>0){
return d_minutes+"分钟前";
}else{
var s = new Date(publishTime*1000);
// s.getFullYear()+"年";
return (s.getMonth()+1)+"月"+s.getDate()+"日";
}
}
</script>