将年份和第几周转换为确切的时间

作者: 嘎嘎 2009-07-07,04:15 下午周二

通过年份和第几周换算出这一周的确切时间,例如:09年mm/dd-mm/dd,xx周

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/**
* 09年mm/dd-mm/dd,xx周
* 根据年份和周获取时间区间
* 获取天数=2009*26周*7
* 获取这天星期几
* 算出星期一的在这一年里的第几天
* 算出一个时间,转换为日期
* 算出一个时间+7天,转换为日期
*/
private function getTheTime(year:int, week:int):String {
var alltime:Number = ((year - 1970) * 365 + week * 7) * 3600 * 24 * 1000;
var allDate:Date = new Date(alltime);
//获取今天星期几
var allWeek:int = allDate.getDay();
if (allWeek == 0) {
allWeek = 7;
}
allWeek = allWeek -1;
//获取本周的开始时间和结束时间
var StarTime:Date = new Date(alltime - allWeek * 3600 * 24 * 1000);
var EndTime:Date = new Date(alltime - (allWeek - 6) * 3600 * 24 * 1000);
//开始对时间的应用
var str:String = String(StarTime.getFullYear()).substr(2, 2) + "年";
if (StarTime.getMonth() < 9) {
str = str + "0" +(StarTime.getMonth() + 1);
}else {
str = str +(StarTime.getMonth() + 1);
}
str = str + "/";
if (StarTime.getDate() < 10) {
str = str + "0" + StarTime.getDate();
}else {
str = str + StarTime.getDate();
}
str = str + "-";
if (EndTime.getMonth() < 9) {
str = str + "0" +(EndTime.getMonth() + 1);
}else {
str = str +(EndTime.getMonth() + 1);
}
str = str + "/";
if (EndTime.getDate() < 10) {
str = str + "0" + EndTime.getDate();
}else {
str = str + EndTime.getDate();
}
str = str + "," + week + "周";
return str;
}