java将excel时间格式数据转换成对应格式的字符串

String dateStr2="43306.4153240741";
Date date = org.apache.poi.ss.usermodel.DateUtil
                .getJavaDate(Double.valueOf(dateStr));
DateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println(format.format(date));

//输入结果为2018-07-25 09:58:04