blocks|key|84394|text|tl;dr|type|unstyled|depth|inlineStyleRanges|entityRanges|data|84395|84396|将字符串日期格式转换为java.time.Instant|blockquote|84397|84398|84399|跳过格式化模式。解析就行了。|84400|Instant.parse(+"2018-07-17T09:59:51.312Z"+)|code-block|syntax|javascript|84401|ISO+8601|84402|是的，您使用了first+Answer中指示的不正确的格式模式。|offset|length|84403|但是根本不需要指定格式化模式。您的输入字符串为标准ISO+8601格式。在解析/生成字符串时，java.time类默认使用ISO8601格式。|style|BOLD|84404|末尾的Z是UTC的意思，发音是“Zulu”。|CODE|84405|Instant+instant+=+Instant.parse(+"2018-07-17T09:59:51.312Z"+)+;|84406|84407|关于java.time|84408|框架内置于Java8和更高版本中。这些类取代了麻烦的旧legacy日期时间类，如java.util.Date、Calendar和SimpleDateFormat。|84409|现在在maintenance+mode中的项目建议迁移到java.time类。|84410|要了解更多信息，请参阅。和搜索堆栈溢出，以获得许多示例和解释。规范为JSR+310。|84411|您可以直接与数据库交换java.time对象。使用与JDBC+4.2或更高版本兼容的JDBC+driver。不需要字符串，也不需要java.sql.*类。|84412|从哪里获取java.time类？|84413|84414|，、、和更高版本-标准Java+API的一部分，具有捆绑的实现。|unordered-list-item|84415|Java9添加了一些次要功能和fixes.|84416|84417|84418|​|84419|84420|和.|84421|中的+|84422|许多java.time功能已向后移植到Java6和7|84423|84424|84425|84426|+|84427|更高版本的Android捆绑实现的java.time类。|84428|对于较早的Android+(<26)，项目适配+(如上所述)。请参阅.|84429|84430|84431|84432|项目使用额外的类扩展了java.time。这个项目是未来可能添加到java.time中的试验场。您可能会在这里找到一些有用的类，如Interval、YearWeek、YearQuarter和more。|84433|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/51910670/642706|1|https://en.wikipedia.org/wiki/ISO_8601|2|https://en.wikipedia.org/wiki/Coordinated_Universal_Time|3|https://en.wikipedia.org/wiki/Legacy_system|4|https://docs.oracle.com/javase/10/docs/api/java/util/Date.html|5|https://docs.oracle.com/javase/10/docs/api/java/util/Calendar.html|6|http://docs.oracle.com/javase/10/docs/api/java/text/SimpleDateFormat.html|7|https://en.wikipedia.org/wiki/Maintenance_mode|8|http://docs.oracle.com/javase/10/docs/api/java/time/package-summary.html|9|https://jcp.org/en/jsr/detail?id=310|10|http://openjdk.java.net/jeps/170|11|https://en.wikipedia.org/wiki/JDBC_driver|12|http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/Interval.html|13|http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/YearWeek.html|14|http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/YearQuarter.html|15|http://www.threeten.org/threeten-extra/apidocs/index.html^0|0|0|0|0|0|0|0|0|7|C|0|0|2|C|P|8|1|0|3|1|5|3|2|0|0|0|0|14|E|1J|8|1S|G|R|6|3|14|E|4|1J|8|5|1S|G|6|0|3|G|7|S|9|8|0|Y|7|9|0|1T|A|Q|8|A|16|B|B|0|0|0|1|1|0|0|0|0|0|0|0|0|0|0|1|1|1|0|0|0|1T|8|22|8|2B|B|1T|8|C|22|8|D|2B|B|E|2N|4|F|0^^$0|@$1|2|3|4|5|6|7|3D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|3E|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|3F|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|3G|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|3H|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|3I|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|3J|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|3K|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|3L|8|@]|9|@$S|3M|T|3N|1|3O]]|A|$]]|$1|U|3|V|5|6|7|3P|8|@$S|3Q|T|3R|W|X]]|9|@$S|3S|T|3T|1|3U]]|A|$]]|$1|Y|3|Z|5|6|7|3V|8|@$S|3W|T|3X|W|10]]|9|@$S|3Y|T|3Z|1|40]]|A|$]]|$1|11|3|12|5|L|7|41|8|@]|9|@]|A|$M|N]]|$1|13|3|-4|5|6|7|42|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|43|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|44|8|@$S|45|T|46|W|10]|$S|47|T|48|W|10]|$S|49|T|4A|W|10]]|9|@$S|4B|T|4C|1|4D]|$S|4E|T|4F|1|4G]|$S|4H|T|4I|1|4J]|$S|4K|T|4L|1|4M]]|A|$]]|$1|18|3|19|5|6|7|4N|8|@]|9|@$S|4O|T|4P|1|4Q]|$S|4R|T|4S|1|4T]]|A|$]]|$1|1A|3|1B|5|6|7|4U|8|@]|9|@$S|4V|T|4W|1|4X]]|A|$]]|$1|1C|3|1D|5|6|7|4Y|8|@$S|4Z|T|50|W|10]]|9|@$S|51|T|52|1|53]|$S|54|T|55|1|56]]|A|$]]|$1|1E|3|1F|5|6|7|57|8|@]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|58|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|1J|7|59|8|@]|9|@]|A|$]]|$1|1K|3|1L|5|1J|7|5A|8|@]|9|@]|A|$]]|$1|1M|3|-4|5|6|7|5B|8|@]|9|@]|A|$]]|$1|1N|3|-4|5|6|7|5C|8|@]|9|@]|A|$]]|$1|1O|3|1P|5|6|7|5D|8|@]|9|@]|A|$]]|$1|1Q|3|-4|5|6|7|5E|8|@]|9|@]|A|$]]|$1|1R|3|1S|5|1J|7|5F|8|@]|9|@]|A|$]]|$1|1T|3|1U|5|6|7|5G|8|@]|9|@]|A|$]]|$1|1V|3|1W|5|1J|7|5H|8|@]|9|@]|A|$]]|$1|1X|3|-4|5|6|7|5I|8|@]|9|@]|A|$]]|$1|1Y|3|1P|5|6|7|5J|8|@]|9|@]|A|$]]|$1|1Z|3|-4|5|6|7|5K|8|@]|9|@]|A|$]]|$1|20|3|21|5|1J|7|5L|8|@]|9|@]|A|$]]|$1|22|3|23|5|1J|7|5M|8|@]|9|@]|A|$]]|$1|24|3|25|5|1J|7|5N|8|@]|9|@]|A|$]]|$1|26|3|-4|5|6|7|5O|8|@]|9|@]|A|$]]|$1|27|3|-4|5|6|7|5P|8|@]|9|@]|A|$]]|$1|28|3|1P|5|6|7|5Q|8|@]|9|@]|A|$]]|$1|29|3|2A|5|6|7|5R|8|@$S|5S|T|5T|W|10]|$S|5U|T|5V|W|10]|$S|5W|T|5X|W|10]]|9|@$S|5Y|T|5Z|1|60]|$S|61|T|62|1|63]|$S|64|T|65|1|66]|$S|67|T|68|1|69]]|A|$]]|$1|2B|3|-4|5|6|7|6A|8|@]|9|@]|A|$]]]|2C|$2D|$5|2E|2F|2G|A|$2H|2I]]|2J|$5|2E|2F|2G|A|$2H|2K]]|2L|$5|2E|2F|2G|A|$2H|2M]]|2N|$5|2E|2F|2G|A|$2H|2O]]|2P|$5|2E|2F|2G|A|$2H|2Q]]|2R|$5|2E|2F|2G|A|$2H|2S]]|2T|$5|2E|2F|2G|A|$2H|2U]]|2V|$5|2E|2F|2G|A|$2H|2W]]|2X|$5|2E|2F|2G|A|$2H|2Y]]|2Z|$5|2E|2F|2G|A|$2H|30]]|31|$5|2E|2F|2G|A|$2H|32]]|33|$5|2E|2F|2G|A|$2H|34]]|35|$5|2E|2F|2G|A|$2H|36]]|37|$5|2E|2F|2G|A|$2H|38]]|39|$5|2E|2F|2G|A|$2H|3A]]|3B|$5|2E|2F|2G|A|$2H|3C]]]]

<h1>tl;dr</h1>

<blockquote>
 convert string date format into java.time.Instant
</blockquote>

Skip the formatting pattern. Just parse.

<pre><code>Instant.parse( "2018-07-17T09:59:51.312Z" )
</code></pre>

<h1>ISO 8601</h1>

Yes, you used incorrect formatting pattern as indicated in the <a href="https://stackoverflow.com/a/51910670/642706">first Answer</a>.

But you needn't specify a formatting pattern at all. Your input string is in standard <a href="https://en.wikipedia.org/wiki/ISO_8601" rel="noreferrer">ISO 8601</a> format. The java.time classes use ISO 8601 formats by default when parsing/generating strings.

The <code>Z</code> on the end means <a href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time" rel="noreferrer">UTC</a>, and is pronounced “Zulu”. 

<pre><code>Instant instant = Instant.parse( "2018-07-17T09:59:51.312Z" ) ;
</code></pre>

<hr>

<h1>About java.time</h1>

The <a href="http://docs.oracle.com/javase/10/docs/api/java/time/package-summary.html" rel="noreferrer">java.time</a> framework is built into Java 8 and later. These classes supplant the troublesome old <a href="https://en.wikipedia.org/wiki/Legacy_system" rel="noreferrer">legacy</a> date-time classes such as <a href="https://docs.oracle.com/javase/10/docs/api/java/util/Date.html" rel="noreferrer"><code>java.util.Date</code></a>, <a href="https://docs.oracle.com/javase/10/docs/api/java/util/Calendar.html" rel="noreferrer"><code>Calendar</code></a>, &amp; <a href="http://docs.oracle.com/javase/10/docs/api/java/text/SimpleDateFormat.html" rel="noreferrer"><code>SimpleDateFormat</code></a>.

The <a href="http://www.joda.org/joda-time/" rel="noreferrer">Joda-Time</a> project, now in <a href="https://en.wikipedia.org/wiki/Maintenance_mode" rel="noreferrer">maintenance mode</a>, advises migration to the <a href="http://docs.oracle.com/javase/10/docs/api/java/time/package-summary.html" rel="noreferrer">java.time</a> classes.

To learn more, see the <a href="http://docs.oracle.com/javase/tutorial/datetime/TOC.html" rel="noreferrer">Oracle Tutorial</a>. And search Stack Overflow for many examples and explanations. Specification is <a href="https://jcp.org/en/jsr/detail?id=310" rel="noreferrer">JSR 310</a>.

You may exchange java.time objects directly with your database. Use a <a href="https://en.wikipedia.org/wiki/JDBC_driver" rel="noreferrer">JDBC driver</a> compliant with <a href="http://openjdk.java.net/jeps/170" rel="noreferrer">JDBC 4.2</a> or later. No need for strings, no need for <code>java.sql.*</code> classes.

Where to obtain the java.time classes? 

<ul>
<li><a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_8" rel="noreferrer">Java SE 8</a>, <a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_9" rel="noreferrer">Java SE 9</a>, <a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_10" rel="noreferrer">Java SE 10</a>, <a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_11" rel="noreferrer">Java SE 11</a>, and later - Part of the standard Java API with a bundled implementation.

<ul>
<li>Java 9 adds some minor features and fixes.</li>
</ul></li>
<li><a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_6" rel="noreferrer">Java SE 6</a> and <a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_7" rel="noreferrer">Java SE 7</a>

<ul>
<li>Much of the java.time functionality is back-ported to Java 6 &amp; 7 in <a href="http://www.threeten.org/threetenbp/" rel="noreferrer">ThreeTen-Backport</a>.</li>
</ul></li>
<li><a href="https://en.wikipedia.org/wiki/Android_(operating_system)" rel="noreferrer">Android</a>

<ul>
<li>Later versions of Android bundle implementations of the java.time classes.</li>
<li>For earlier Android (&lt;26), the <a href="https://github.com/JakeWharton/ThreeTenABP" rel="noreferrer">ThreeTenABP</a> project adapts <a href="http://www.threeten.org/threetenbp/" rel="noreferrer">ThreeTen-Backport</a> (mentioned above). See <a href="http://stackoverflow.com/q/38922754/642706">How to use ThreeTenABP…</a>.</li>
</ul></li>
</ul>

The <a href="http://www.threeten.org/threeten-extra/" rel="noreferrer">ThreeTen-Extra</a> project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as <a href="http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/Interval.html" rel="noreferrer"><code>Interval</code></a>, <a href="http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/YearWeek.html" rel="noreferrer"><code>YearWeek</code></a>, <a href="http://www.threeten.org/threeten-extra/apidocs/org/threeten/extra/YearQuarter.html" rel="noreferrer"><code>YearQuarter</code></a>, and <a href="http://www.threeten.org/threeten-extra/apidocs/index.html" rel="noreferrer">more</a>.

blocks|key|2810583|text|不要构建自己的格式化程序|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2810584|不要纠结于编写你自己的格式模式字符串。您的字符串是内置在java.time中的ISO8601格式。解析为java.time.Instant+(如标题所示)：|offset|length|style|CODE|2810585|++++String+string+=+"2018-07-17T09:59:51.312Z";
++++Instant+inst+=+Instant.parse(string);
++++System.out.println(inst);|code-block|syntax|javascript|2810586|输出：|2810587|2810588|+2018-07-17T09:59:51.312Z|blockquote|2810589|2810590|2810591|要解析成LocalDate+(正如您的代码片段所预期的那样)：|2810592|++++LocalDate+date+=+LocalDate.parse(string,+DateTimeFormatter.ISO_OFFSET_DATE_TIME);
++++System.out.println(date);|2810593|2810594|+2018-07-17|2810595|2810596|2810597|你的代码出了什么问题？|2810598|格式模式字母区分大小写(您也可以从链接到的问题的第一个答案中的表中看到这一点)。|2810599|2810600|你使用大写YYYY已有一年了。大写Y表示周年份，仅适用于周数字。对于year.|unordered-list-item|2810601|Uppercase+DD表示一年中的某一天，请使用uuuu或小写yyyy。对于月份中的某一天，您需要小写的dd.|2810602|Lowercase+hh表示小时，AM或PM的值从01到12，并且仅对AM/PM标记有用。你需要用大写的HH表示从00到23的一天中的某一小时。|2810603|最终你正确地使用了小写的ss表示秒，但也使用了sss表示秒的零点数。对于后者，您需要大写的SSS。这个错误是你的错误消息的原因:因为秒数只有60+(包括一个闰秒)，所以sss中的三个s是没有意义的，并且DateTimeFormatter对象。从文档中：|2810604|2810605|最多可以指定两个字母'd‘、'H’、'h‘、'K’、'k‘、'm’和's‘。|2810606|链接：DateTimeFormatter+documentation|2810607|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/9/docs/api/java/time/format/DateTimeFormatter.html^0|0|1G|H|0|0|0|0|0|0|0|4|9|0|0|0|0|0|0|0|0|0|5|4|H|1|0|A|2|P|4|W|4|1H|2|0|A|2|1G|2|0|C|2|N|3|19|3|2C|3|2J|1|2T|H|0|0|0|3|H|3|V|0|0^^$0|@$1|2|3|4|5|6|7|1U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1V|8|@$D|1W|E|1X|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|1Y|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|20|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|21|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|22|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|23|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|24|8|@$D|25|E|26|F|G]]|9|@]|A|$]]|$1|W|3|X|5|J|7|27|8|@]|9|@]|A|$K|L]]|$1|Y|3|-4|5|6|7|28|8|@]|9|@]|A|$]]|$1|Z|3|10|5|R|7|29|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|2A|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|2C|8|@]|9|@]|A|$]]|$1|15|3|16|5|6|7|2D|8|@]|9|@]|A|$]]|$1|17|3|-4|5|6|7|2E|8|@]|9|@]|A|$]]|$1|18|3|19|5|1A|7|2F|8|@$D|2G|E|2H|F|G]|$D|2I|E|2J|F|G]]|9|@]|A|$]]|$1|1B|3|1C|5|1A|7|2K|8|@$D|2L|E|2M|F|G]|$D|2N|E|2O|F|G]|$D|2P|E|2Q|F|G]|$D|2R|E|2S|F|G]]|9|@]|A|$]]|$1|1D|3|1E|5|1A|7|2T|8|@$D|2U|E|2V|F|G]|$D|2W|E|2X|F|G]]|9|@]|A|$]]|$1|1F|3|1G|5|1A|7|2Y|8|@$D|2Z|E|30|F|G]|$D|31|E|32|F|G]|$D|33|E|34|F|G]|$D|35|E|36|F|G]|$D|37|E|38|F|G]|$D|39|E|3A|F|G]]|9|@]|A|$]]|$1|1H|3|-4|5|6|7|3B|8|@]|9|@]|A|$]]|$1|1I|3|1J|5|6|7|3C|8|@]|9|@]|A|$]]|$1|1K|3|1L|5|6|7|3D|8|@$D|3E|E|3F|F|G]]|9|@$D|3G|E|3H|1|3I]]|A|$]]|$1|1M|3|-4|5|6|7|3J|8|@]|9|@]|A|$]]]|1N|$1O|$5|1P|1Q|1R|A|$1S|1T]]]]

<h2>Don’t build your own formatter</h2>

Don’t struggle with writing your own format pattern string. Your string is in an ISO 8601 format that is built into java.time. To parse into a <code>java.time.Instant</code> (as your title says):

<pre><code> String string = "2018-07-17T09:59:51.312Z";
 Instant inst = Instant.parse(string);
 System.out.println(inst);
</code></pre>

Output:

<blockquote>
 2018-07-17T09:59:51.312Z
</blockquote>

To parse into a <code>LocalDate</code> (as your code snippet seems to intend):

<pre><code> LocalDate date = LocalDate.parse(string, DateTimeFormatter.ISO_OFFSET_DATE_TIME);
 System.out.println(date);
</code></pre>

<blockquote>
 2018-07-17
</blockquote>

<h2>What went wrong in your code?</h2>

Format pattern letters are case sensitive (you can also see this from the tables in the first answer to the question you are linking to).

<ul>
<li>You used uppercase <code>YYYY</code> for year. Uppercase <code>Y</code> is for week year, only useful with a week number. Use either <code>uuuu</code> or lowercase <code>yyyy</code> for year.</li>
<li>Uppercase <code>DD</code> is for day of year. For day of month you need lowercase <code>dd</code>.</li>
<li>Lowercase <code>hh</code> is for hour with AM or PM from 01 through 12 and only useful with an AM/PM marker. You need uppercase <code>HH</code> for hour of day from 00 through 23.</li>
<li>Finally you correctly used lowercase <code>ss</code> for seconds, but also <code>sss</code> for fraction of second. For the latter you need uppercase <code>SSS</code>. This error is the reason for your error message: Since seconds only go up to 60 (including a leap second), three <code>s</code> as in <code>sss</code> does not make sense, and <code>DateTimeFormatter</code> objects to this. From the documentation:

<blockquote>
 Up to two letters of 'd', 'H', 'h', 'K', 'k', 'm', and 's' can be specified.
</blockquote></li>
</ul>

Link: <a href="https://docs.oracle.com/javase/9/docs/api/java/time/format/DateTimeFormatter.html" rel="nofollow noreferrer"><code>DateTimeFormatter</code> documentation</a>

I want to convert string date format into java.time.Instant

I am getting exception while parsing date.

<pre><code> java.lang.IllegalArgumentException: Too many pattern letters: s
</code></pre>

I am using below code for conversion first from String to date.

<pre><code> String string = "2018-07-17T09:59:51.312Z";
 DateTimeFormatter formatter = DateTimeFormatter.ofPattern("YYYY-MM-DD'T'hh:mm:ss.sssZ", Locale.FRANCE);
 LocalDate date = LocalDate.parse(string, formatter);
 System.out.println(date);
</code></pre>

I want to convert "timestamp": <code>"2018-07-17T09:59:51.312Z"</code> in format time in the ISO 8601 format <code>YYYY-MM-DDThh:mm:ss.sssZ</code> in the UTC timezone.

Checked <a href="https://stackoverflow.com/questions/4216745/java-string-to-date-conversion">Java string to date conversion</a>, but not working.

Convert Date from ISO 8601 Zulu string to java.time.Instant in Java 8

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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我想将字符串日期格式转换为java.time.Instant解析日期时出现异常。 java.lang.IllegalArgumentException: Too many pattern letters: s我使用下面的代码进行转换，首先从字符串到日期。    String string = "2018-07-17T0...

问在Java8中将日期从ISO8601Zulu字符串转换为java.time.Instant
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