取当前日期(天)的当前周的第一天和最后一天日期

  /**
     * 解析日期字符串至日期类型内容
     * @param date 日期字符串
     * @param format 与日期字符串格式匹配的格式
     * @return 解析后返回的日期
     */
    public static java.util.Date parseDate(String date, String format) {
        try {
            SimpleDateFormat formatter;
            if (null == format)
                throw new IllegalArgumentException("错误的日期格式");
            formatter = new SimpleDateFormat(format);
            ParsePosition pos = new ParsePosition(0);
            return formatter.parse(date, pos);
        } catch (Exception e) {
            throw new IllegalArgumentException("错误的日期:" + date + " " + e);
        }
    }

 

 

 public static final String getDateTime(String aMask, Date aDate) {
        SimpleDateFormat df = null;
        String returnValue = "";

        if (aDate == null) {
            log.error("aDate is null!");
        } else {
            df = new SimpleDateFormat(aMask);
            returnValue = df.format(aDate);
        }

        return (returnValue);
    }

 

 

 

 

/**
     * 取当前日期(天)的当前周的第一天和最后一天日期
     *
     * @param date
     * @param format
     * @return
     */
    public static String[] getWeek(String date, String format) {
     String[] result = new String[2];
     Calendar calendar = Calendar.getInstance();
     calendar.setTime(parseDate(date, format));
     int dayOfWeek = calendar.get(calendar.DAY_OF_WEEK);
     calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) - dayOfWeek + 1);
     result[0] = getDateTime(format, calendar.getTime());
     calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) + 6);
     result[1] = getDateTime(format, calendar.getTime());
     
     return result;
    }
   

 

//测试类
    public static void main(String[] args) throws Exception{
     String[] a = getWeek("2010-07-01", "yyyy-MM-dd");
     System.out.println(a[0] + "    " + a[1]); //得出当前日期,当前周的第一天和最后一天
    }