java - 将字符串日期转换为日期对象，并且年份也存储为 YYYY

Question

我正在读取一个 Excel 值，它是字符串类型的日期，我将其转换为日期类型，以 dd/MM/YYYY 格式存储日期，所以下面是我这样做的方式

private static final SimpleDateFormat outputDate = new SimpleDateFormat("dd/MM/yyyy");

String dealDateString = cell.getStringCellValue(); // inside this deal date is stored as 05/07/13 
if (dealDateString != null) {
    java.util.Date  dealDate = convertStringToDate(dealDateString);
    String dd = outputDate.format(dealDate); // ----> now the date is stored inside dd string as DD/MM/YYYY as 05/07/2013 
    DateFormat format = new SimpleDateFormat("dd/MM/yyyy", Locale.UK);
    java.util.Date date = format.parse(dd); //--> but inside date object the year is stored as 13 that is year is stored as YY
}

下面是我设计的自定义方法，它将接受字符串并将其转换为日期对象

public java.util.Date convertStringToDate(String stringValue) {
    String[] formatStrings = { "dd/MM/yyyy", "dd-MMM-yyyy" ,"dd/MM/YY" , "dd-MM-YY"};

    for (String formatString : formatStrings) {
        try {
            return new SimpleDateFormat(formatString).parse(stringValue);
        } catch (ParseException e) {
            logger.warn("##$$$$$### Error in invoice inside convertStringToDate method : ##$$$$$$#### "
                        + ErrorUtility.getStackTraceForException(e));

        }
    }

    return null;
}

现在日期已转换为 java 日期对象，但年份被扣除，假设年份是 2014 年，那么 年份存储为 14 ，请告知我如何将年份存储为 2014 主要问题是年份仅存储为两位数我想将其存储为 YYYY

folks please advise

Answer 1

尝试写下这一行:

String[] formatStrings = { "dd/MM/yyyy", "dd-MMM-yyyy" ,"dd/MM/YY" , "dd-MM-YY"};

像这样:

 String[] formatStrings = { "dd/MM/yyyy", "dd-MMM-yyyy" ,"dd/MM/yy" , "dd-MM-yy"};