Question

我正在使用DOM API阅读rss feed。作为pubDate iamreciving日期的一部分，这种格式

Sun, 01 Nov 2015 06:27:09 +0000

我需要将日期转换为此格式

2015-11-01 06:27

这是我试过的

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;


public class Test {
    public static void main(String[] args) throws ParseException {
         String today = convertdate("Sun, 01 Nov 2015 06:27:09 +0000");
            System.out.println(today);
    }
    public static String convertdate(String recivieddate) throws ParseException {
        SimpleDateFormat in = new SimpleDateFormat("E,dd MM yy HH:mm:ss");
        Date date = in.parse(recivieddate);

        SimpleDateFormat out = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        String newdate = out.format(date);

        return newdate.toString();
    }
}

但我得到的例外是

Exception in thread "main" java.text.ParseException: Unparseable date: "Sun, 01 Nov 2015 06:27:09 +0000"
    at java.text.DateFormat.parse(Unknown Source)
    at Test.convertdate(Test.java:13)
    at Test.main(Test.java:8)

Answer 1

您应该使用E,dd MMM yy HH:mm:ss来解析

试试这个

import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;

public class test {
        public static void main(String[] args) throws ParseException {
             String today = convertdate("Sun, 01 Nov 2015 06:27:09 +0000");
                System.out.println(today);
        }
        public static String convertdate(String recivieddate) throws ParseException {
            SimpleDateFormat in = new SimpleDateFormat("E,dd MMM yy HH:mm:ss");
            Date date = in.parse(recivieddate);

            SimpleDateFormat out = new SimpleDateFormat("yyyy-MM-dd HH:mm");
            String newdate = out.format(date);

            return newdate.toString();
        }
    }

输出 2015-11-01 06:27

Answer 2

试试这个...

 package com.paytm.pg.common;

        import java.text.ParseException;
        import java.text.SimpleDateFormat;
        import java.util.Date;


        public class Test {
            public static void main(String[] args) throws ParseException {
                 String today = convertdate("Sun, 01 Nov 2015 06:27:09 +0000");
                    System.out.println(today);
            }
            public static String convertdate(String recivieddate) throws ParseException {
                SimpleDateFormat in = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss");
                Date date = in.parse(recivieddate);

                SimpleDateFormat out = new SimpleDateFormat("yyyy-MM-dd HH:mm");
                String newdate = out.format(date);

                return newdate.toString();
            }
        }

Answer 3

如果您不介意使用库，则可以在不指定格式的情况下解析日期。

import org.pojava.datetime.DateTime;
import java.util.TimeZone;

public static void main(String[] args) {
    TimeZone utc=TimeZone.getTimeZone("UTC");
    String formatted=DateTime.parse("Sun, 01 Nov 2015 06:27:09 +0000")
      .toString("yyyy-MM-dd HH:mm", utc));
    // 2015-11-01 06:27
}

如何以所需格式转换此日期

3 个答案: