timestamp 类型，取得包括当前天数在内的连续的7天

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date; 

Date today = new Date();
public Timestamp getFirstDayIn7Day(Date today){
        java.text.DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String  value = format.format(today);
        today = java.sql.Date.valueOf(value);
        int day = 6;
        return new Timestamp(today.getTime()-day*24*60*60*1000);
    }
   
public Timestamp getLastestDayIn7Day(Date today){
        java.text.DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String  value = format.format(today);
        today = java.sql.Date.valueOf(value);
        int day =1 ;
        return new Timestamp(today.getTime()+day*24*60*60*1000);
    }