Java-无法在此文本中使用正则表达式找到日期

Question

I have a text which contains also this kind of dates: ' Date Reported26/09/2010 08:22 ' and I want to extract the date with regex (because date is different in this taxes, so I am using this regex:

private static String PATTERN_DATE_REPORTED = "Date Reported[0-9]{2}/[0-9]{2}/[0-9]{4} [0-9]{2}:[0-9]{2}";

and do the extract like:

if ((value = extractWithRegEx(PATTERN_DATE_REPORTED, text)) != null) {
            DateFormat df = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
            try {
                metadata.setDateReported(df.parse(value));
                System.out.println("Succesfully converted report date: "+metadata.getDateReported().toString());
            } catch (ParseException e) {
                System.out.println("Exception occured when converting report date: "+ e.getMessage());
            }
        }else{
            System.out.println("Date Reported not found by this regex");
        }

where extractWithRegEx is defined like:

public String extractWithRegEx(String regextype, String input) {
    String matchedString = null;

    if (regextype != null && input != null) {
        Matcher matcher = Pattern.compile(regextype).matcher(input);
        if (matcher.find()) {
            matchedString = matcher.group(0);
            if (matcher.groupCount() > 0) {
                matchedString = matcher.group(1);
            }
        }
    }
    return matchedString;
}

The issue: it does not find my date based on the above regex.

I am very sure the extractWithRegEx is correct because it works for other regex to find other type of text but for this date I think something is wrong in the rest of the code...Can you see the issue?

Answer 1

您在正则表达式中缺少圆括号。

private static String PATTERN_DATE_REPORTED = "Date Reported([0-9]{2}/[0-9]{2}/[0-9]{4} [0-9]{2}:[0-9]{2})";