在java中将字符串转换为日期 - 时区
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Convert String to Date in java - Time zone
提问by Amit Saxena
I have a String, 2013-10-07T23:59:51.205-07:00, want to convert this to Java date object. I am getting parsing error.
我有一个字符串，2013-10-07T23:59:51.205-07:00想将其转换为 Java 日期对象。我收到解析错误。
date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'").parse("2013-10-07T23:59:51.205-07:00");
回答by Scary Wombat
try
尝试
date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ")
.parse("2013-10-07T23:59:51.205-0700");
The Z is not a literal and the timezone does not have a colon
Z 不是文字，时区没有冒号
See the examples at http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html
请参阅http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html 上的示例
If java7 is being used then Zcan be replaced with Xand the timezone can have a colon
如果正在使用 java7 然后Z可以替换为X并且时区可以有一个冒号
回答by Rohit Jain
Zshouldn't be inside quotes. I don't think Zwould work for your given timezone. Before Java 7, I guess there wasn't any format to parse ISO 8601 format timezone with colon in between. You should use -0700instead.
Z不应该在引号内。我认为不适Z用于您给定的时区。在 Java 7 之前，我想没有任何格式可以解析 ISO 8601 格式时区，中间有冒号。你应该-0700改用。
However, from Java 7 onwards, you have an option for parsing ISO 8601 format timezoneusing Xinstead of Z. See javadoc for SimpleDateFormat. Just use the following format:
但是，从 Java 7 开始，您可以选择使用代替来解析ISO 8601 格式时区。有关. 只需使用以下格式：XZSimpleDateFormat
// This would work from Java 7 onwards
date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSX")
.parse("2013-10-07T23:59:51.205-07:00");
回答by Akkusativobjekt
回答by Cirou
Your pattern is wrong, you should use the following:
您的模式是错误的，您应该使用以下内容：
date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX")
.parse("2013-10-07T23:59:51.205-07:00");
The 'X' indicates the Time zone in the ISO 8601 format as expressed in your Stringhere: '.205-07:00'
“X”表示 ISO 8601 格式的时区，如您String在此处表示的：“.205-07:00”
For more information read the doc: SimpleDateFormat
有关更多信息，请阅读文档：SimpleDateFormat
回答by Masudul
回答by Whome
Use this trick to parse ISO8601 datetime format. I admit have not tried this with millisecond part within a string value maybe it gives you an extra headache. This works for Java6.
使用此技巧解析 ISO8601 日期时间格式。我承认没有在字符串值中使用毫秒部分尝试过这个，也许它会让你更加头疼。这适用于 Java6。
import javax.xml.bind.DatatypeConverter;
Calendar cal = DatatypeConverter.parseDateTime(strDatetime);
If am remembering correct cal instance may not use a system-default timezone. Its initialized to the origin string value timezone. If you want instance to use system timezone you can do this conversion.
如果我记得正确的 cal 实例可能不使用系统默认时区。它被初始化为原始字符串值时区。如果您希望实例使用系统时区，您可以进行此转换。
long ts = cal.getTimeInMillis();
cal = Calendar.getInstance();
cal.setTimeInMillis(ts);
