/**
     * 获取当前月份第一天
     */
    public static Date dateTimeMonthEnd(){
        Calendar cale = Calendar.getInstance();
        cale = Calendar.getInstance();
        cale.add(Calendar.MONTH, 1);
        cale.set(Calendar.DAY_OF_MONTH, 0);
        return cale.getTime();
    }

    /**
     * 获取当前月份最后一天
     */
    public static Date dateTimeMonthStart(){
        Calendar cale = Calendar.getInstance();
        cale = Calendar.getInstance();
        cale.add(Calendar.MONTH, 0);
        cale.set(Calendar.DAY_OF_MONTH, 1);
        return cale.getTime();
    }