欢迎大家关注Android开源网络框架NoHttp:https://github.com/yanzhenjie/NoHttp
在线直播视频和代码下载:http://pan.baidu.com/s/1miEOtwG
版权声明:转载请注明本文转自严振杰的CSDN博客: http://blog.csdn.net/yanzhenjie1003
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写这个博客是由于这段时间写NoHttp时遇到格式话Http响应头和要求头中和Data有关的字段时遇到的1些问题,最后总结了1下算法。
2个概念明确下:
1. 格林尼治时间(有的出版局叫格林威治Greenwhich)的格式:”EEE, dd MMM y HH:mm:ss ‘GMT’”
2. 毫秒格式:1464709616971
public static final String FORMAT_HTTP_DATA = "EEE, dd MMM y HH:mm:ss 'GMT'";
public static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Parsing the TimeZone of time in milliseconds.
*
* @param gmtTime GRM Time, Format such as: {@value #FORMAT_HTTP_DATA}.
* @return The number of milliseconds from 1970.1.1.
* @throws ParseException if an error occurs during parsing.
*/
public static long parseGMTToMillis(String gmtTime) throws ParseException {
SimpleDateFormat formatter = new SimpleDateFormat(FORMAT_HTTP_DATA, Locale.US);
formatter.setTimeZone(GMT_TIME_ZONE);
Date date = formatter.parse(gmtTime);
return date.getTime();
}
public static final String FORMAT_HTTP_DATA = "EEE, dd MMM y HH:mm:ss 'GMT'";
public static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Parsing the TimeZone of time from milliseconds.
*
* @param milliseconds the number of milliseconds from 1970.1.1.
* @return GRM Time, Format such as: {@value #FORMAT_HTTP_DATA}.
*/
public static String formatMillisToGMT(long milliseconds) {
Date date = new Date(milliseconds);
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(FORMAT_HTTP_DATA, Locale.US);
simpleDateFormat.setTimeZone(GMT_TIME_ZONE);
return simpleDateFormat.format(date);
}
public final class HttpDateTime {
public static final String FORMAT_HTTP_DATA = "EEE, dd MMM y HH:mm:ss 'GMT'";
public static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Parsing the TimeZone of time in milliseconds.
*
* @param gmtTime GRM Time, Format such as: {@value #FORMAT_HTTP_DATA}.
* @return The number of milliseconds from 1970.1.1.
* @throws ParseException if an error occurs during parsing.
*/
public static long parseGMTToMillis(String gmtTime) throws ParseException {
SimpleDateFormat formatter = new SimpleDateFormat(FORMAT_HTTP_DATA, Locale.US);
formatter.setTimeZone(GMT_TIME_ZONE);
Date date = formatter.parse(gmtTime);
return date.getTime();
}
/**
* Parsing the TimeZone of time from milliseconds.
*
* @param milliseconds the number of milliseconds from 1970.1.1.
* @return GRM Time, Format such as: {@value #FORMAT_HTTP_DATA}.
*/
public static String formatMillisToGMT(long milliseconds) {
Date date = new Date(milliseconds);
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(FORMAT_HTTP_DATA, Locale.US);
simpleDateFormat.setTimeZone(GMT_TIME_ZONE);
return simpleDateFormat.format(date);
}
/**
* Returned the local number of milliseconds after 100.
*
* @return Long format time.
*/
public static long getMaxExpiryMillis() {
return System.currentTimeMillis() + 1000L * 60L * 60L * 24L * 365L * 100L;
}
}
最后1个方法是得到1个100年的毫秒时间,有的同学算到的是错的,问题出在有的数字后面没有L,所以超越了int的极限,所以得到值比料想的要小。
欢迎大家关注Android开源网络框架NoHttp:https://github.com/yanzhenjie/NoHttp
在线直播视频和代码下载:http://pan.baidu.com/s/1miEOtwG