java 生成Http 头部date格式的string-RFC 1123 Date Representation in java

时间:2023-03-09 03:27:56
java 生成Http 头部date格式的string-RFC 1123 Date Representation in java

https://blog.****.net/lvzhuyiyi/article/details/51770148

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RFC date format

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Locale;
import java.util.TimeZone; /**
* Common place for date utils.
*
* @author dac@eng.sun.com
* @author Jason Hunter [jch@eng.sun.com]
* @author James Todd [gonzo@eng.sun.com]
* @author Costin Manolache
*/
public class DateTool { /**
* US locale - all HTTP dates are in english
*/
public final static Locale LOCALE_US = Locale.US; /**
* GMT timezone - all HTTP dates are on GMT
*/
public final static TimeZone GMT_ZONE = TimeZone.getTimeZone("GMT"); /**
* format for RFC 1123 date string -- "Sun, 06 Nov 1994 08:49:37 GMT"
*/
public final static String RFC1123_PATTERN =
"EEE, dd MMM yyyy HH:mm:ss z"; /**
* Format for http response header date field
*/
public static final String HTTP_RESPONSE_DATE_HEADER =
"EEE, dd MMM yyyy HH:mm:ss zzz"; // format for RFC 1036 date string -- "Sunday, 06-Nov-94 08:49:37 GMT"
private final static String rfc1036Pattern =
"EEEEEEEEE, dd-MMM-yy HH:mm:ss z"; // format for C asctime() date string -- "Sun Nov 6 08:49:37 1994"
private final static String asctimePattern =
"EEE MMM d HH:mm:ss yyyyy"; /**
* Pattern used for old cookies
*/
public final static String OLD_COOKIE_PATTERN = "EEE, dd-MMM-yyyy HH:mm:ss z"; /**
* DateFormat to be used to format dates
*/
public final static DateFormat rfc1123Format =
new SimpleDateFormat(RFC1123_PATTERN, LOCALE_US); /**
* DateFormat to be used to format old netscape cookies
*/
public final static DateFormat oldCookieFormat =
new SimpleDateFormat(OLD_COOKIE_PATTERN, LOCALE_US); public final static DateFormat rfc1036Format =
new SimpleDateFormat(rfc1036Pattern, LOCALE_US); public final static DateFormat asctimeFormat =
new SimpleDateFormat(asctimePattern, LOCALE_US); static {
rfc1123Format.setTimeZone(GMT_ZONE);
oldCookieFormat.setTimeZone(GMT_ZONE);
rfc1036Format.setTimeZone(GMT_ZONE);
asctimeFormat.setTimeZone(GMT_ZONE);
} }