blocks|key|668749|text|JodaTime|type|unstyled|depth|inlineStyleRanges|entityRanges|data|668750|要将JodaTime的org.joda.time.LocalDate转换为java.sql.Timestamp，只需这样做|offset|length|style|CODE|668751|Timestamp+timestamp+=+new+Timestamp(localDate.toDateTimeAtStartOfDay().getMillis());|code-block|syntax|javascript|668752|要将JodaTime的org.joda.time.LocalDateTime转换为java.sql.Timestamp，只需这样做|668753|Timestamp+timestamp+=+new+Timestamp(localDateTime.toDateTime().getMillis());|668754|668755|JavaTime|668756|要将Java8的java.time.LocalDate转换为java.sql.Timestamp，只需执行以下操作|668757|Timestamp+timestamp+=+Timestamp.valueOf(localDate.atStartOfDay());|668758|要将Java8的java.time.LocalDateTime转换为java.sql.Timestamp，只需执行以下操作|668759|Timestamp+timestamp+=+Timestamp.valueOf(localDateTime);|668760|entityMap|0|LINK|mutability|MUTABLE|url|http://joda-time.sourceforge.net/apidocs/org/joda/time/LocalDate.html|1|http://docs.oracle.com/javase/7/docs/api/java/sql/Timestamp.html|2|http://joda-time.sourceforge.net/apidocs/org/joda/time/LocalDateTime.html|3|4|https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html|5|http://docs.oracle.com/javase/8/docs/api/java/sql/Timestamp.html#valueOf-java.time.LocalDateTime-|6|https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html|7^0|0|B|N|11|I|B|N|0|11|I|1|0|0|B|R|15|I|B|R|2|15|I|3|0|0|0|0|8|J|U|I|8|J|4|U|I|5|0|0|8|N|Y|I|8|N|6|Y|I|7|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1M|8|@$D|1N|E|1O|F|G]|$D|1P|E|1Q|F|G]]|9|@$D|1R|E|1S|1|1T]|$D|1U|E|1V|1|1W]]|A|$]]|$1|H|3|I|5|J|7|1X|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1Y|8|@$D|1Z|E|20|F|G]|$D|21|E|22|F|G]]|9|@$D|23|E|24|1|25]|$D|26|E|27|1|28]]|A|$]]|$1|O|3|P|5|J|7|29|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|2A|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|2B|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|2C|8|@$D|2D|E|2E|F|G]|$D|2F|E|2G|F|G]]|9|@$D|2H|E|2I|1|2J]|$D|2K|E|2L|1|2M]]|A|$]]|$1|V|3|W|5|J|7|2N|8|@]|9|@]|A|$K|L]]|$1|X|3|Y|5|6|7|2O|8|@$D|2P|E|2Q|F|G]|$D|2R|E|2S|F|G]]|9|@$D|2T|E|2U|1|2V]|$D|2W|E|2X|1|2Y]]|A|$]]|$1|Z|3|10|5|J|7|2Z|8|@]|9|@]|A|$K|L]]|$1|11|3|-4|5|6|7|30|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]|19|$5|14|15|16|A|$17|1A]]|1B|$5|14|15|16|A|$17|1C]]|1D|$5|14|15|16|A|$17|1A]]|1E|$5|14|15|16|A|$17|1F]]|1G|$5|14|15|16|A|$17|1H]]|1I|$5|14|15|16|A|$17|1J]]|1K|$5|14|15|16|A|$17|1H]]]]

<h2>JodaTime</h2>
To convert JodaTime's <a href="http://joda-time.sourceforge.net/apidocs/org/joda/time/LocalDate.html" rel="noreferrer"><code>org.joda.time.LocalDate</code></a> to <a href="http://docs.oracle.com/javase/7/docs/api/java/sql/Timestamp.html" rel="noreferrer"><code>java.sql.Timestamp</code></a>, just do
<pre><code>Timestamp timestamp = new Timestamp(localDate.toDateTimeAtStartOfDay().getMillis());
</code></pre>
To convert JodaTime's <a href="http://joda-time.sourceforge.net/apidocs/org/joda/time/LocalDateTime.html" rel="noreferrer"><code>org.joda.time.LocalDateTime</code></a> to <a href="http://docs.oracle.com/javase/7/docs/api/java/sql/Timestamp.html" rel="noreferrer"><code>java.sql.Timestamp</code></a>, just do
<pre><code>Timestamp timestamp = new Timestamp(localDateTime.toDateTime().getMillis());
</code></pre>
<hr />
<h2>JavaTime</h2>
To convert Java8's <a href="https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html" rel="noreferrer"><code>java.time.LocalDate</code></a> to <a href="http://docs.oracle.com/javase/8/docs/api/java/sql/Timestamp.html#valueOf-java.time.LocalDateTime-" rel="noreferrer"><code>java.sql.Timestamp</code></a>, just do
<pre><code>Timestamp timestamp = Timestamp.valueOf(localDate.atStartOfDay());
</code></pre>
To convert Java8's <a href="https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html" rel="noreferrer"><code>java.time.LocalDateTime</code></a> to <a href="http://docs.oracle.com/javase/8/docs/api/java/sql/Timestamp.html#valueOf-java.time.LocalDateTime-" rel="noreferrer"><code>java.sql.Timestamp</code></a>, just do
<pre><code>Timestamp timestamp = Timestamp.valueOf(localDateTime);
</code></pre>

blocks|key|454537|text|根据您的时区，您可能会损失几分钟(1650-01-01+00:00:00变成1649-12-31+23:52:58)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|454538|使用下面的代码来避免这种情况|454539|new+Timestamp(localDateTime.getYear()+-+1900,+localDateTime.getMonthOfYear()+-+1,+localDateTime.getDayOfMonth(),+localDateTime.getHourOfDay(),+localDateTime.getMinuteOfHour(),+localDateTime.getSecondOfMinute(),+fractional);|code-block|syntax|javascript|454540|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Depending on your timezone, you may lose a few minutes (1650-01-01 00:00:00 becomes 1649-12-31 23:52:58)

Use the following code to avoid that

<pre><code>new Timestamp(localDateTime.getYear() - 1900, localDateTime.getMonthOfYear() - 1, localDateTime.getDayOfMonth(), localDateTime.getHourOfDay(), localDateTime.getMinuteOfHour(), localDateTime.getSecondOfMinute(), fractional);
</code></pre>

blocks|key|668902|text|使用Java+8+time+API的最佳方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|668903|++LocalDateTime+ldt+=+timeStamp.toLocalDateTime();
++Timestamp+ts+=+Timestamp.valueOf(ldt);|code-block|syntax|javascript|668904|为了与你的模型(https://weblogs.java.net/blog/montanajava/archive/2014/06/17/using-java-8-datetime-classes-jpa)中的JPA一起使用：|offset|length|668905|@Converter(autoApply+=+true)
public+class+LocalDateTimeConverter+implements+AttributeConverter<LocalDateTime,+Timestamp>+{
++++@Override
++++public+Timestamp+convertToDatabaseColumn(LocalDateTime+ldt)+{
++++++++return+Timestamp.valueOf(ldt);
++++}

++++@Override
++++public+LocalDateTime+convertToEntityAttribute(Timestamp+ts)+{
++++++++return+ts.toLocalDateTime();
++++}
}|668906|所以现在是相对时区独立的时间。此外，它很容易做到：|668907|++LocalDate+ld+=+ldt.toLocalDate();
++LocalTime+lt+=+ldt.toLocalTime();|668908|格式化：|668909|+DateTimeFormatter+DATE_TME_FORMATTER+=+DateTimeFormatter.ofPattern("yyyy-MM-dd+HH:mm")
+String+str+=+ldt.format(DATE_TME_FORMATTER);
+ldt+=+LocalDateTime.parse(str,+DATE_TME_FORMATTER);|668910|更新:+postgres+9.4.1208，HSQLDB+2.4.0等无需任何对话即可理解Java+8+Time+API！|668911|entityMap|0|LINK|mutability|MUTABLE|url|https://weblogs.java.net/blog/montanajava/archive/2014/06/17/using-java-8-datetime-classes-jpa^0|0|0|8|2M|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@]|9|@$I|17|J|18|1|19]]|A|$]]|$1|K|3|L|5|D|7|1A|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|1B|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@]|A|$]]|$1|S|3|T|5|D|7|1E|8|@]|9|@]|A|$E|F]]|$1|U|3|V|5|6|7|1F|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13]]]]

The best way use Java 8 time API:

<pre><code> LocalDateTime ldt = timeStamp.toLocalDateTime();
 Timestamp ts = Timestamp.valueOf(ldt);
</code></pre>

For use with JPA put in with your model (<a href="https://weblogs.java.net/blog/montanajava/archive/2014/06/17/using-java-8-datetime-classes-jpa" rel="noreferrer">https://weblogs.java.net/blog/montanajava/archive/2014/06/17/using-java-8-datetime-classes-jpa</a>):

<pre><code>@Converter(autoApply = true)
public class LocalDateTimeConverter implements AttributeConverter&lt;LocalDateTime, Timestamp&gt; {
 @Override
 public Timestamp convertToDatabaseColumn(LocalDateTime ldt) {
 return Timestamp.valueOf(ldt);
 }

 @Override
 public LocalDateTime convertToEntityAttribute(Timestamp ts) {
 return ts.toLocalDateTime();
 }
}
</code></pre>

So now it is relative timezone independent time.
Additionally it is easy do:

<pre><code> LocalDate ld = ldt.toLocalDate();
 LocalTime lt = ldt.toLocalTime();
</code></pre>

Formatting:

<pre><code> DateTimeFormatter DATE_TME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm")
 String str = ldt.format(DATE_TME_FORMATTER);
 ldt = LocalDateTime.parse(str, DATE_TME_FORMATTER);
</code></pre>

UPDATE: postgres 9.4.1208, HSQLDB 2.4.0 etc understand Java 8 Time API without any conversations!

blocks|key|668917|text|Java8+%2B|type|unstyled|depth|inlineStyleRanges|entityRanges|data|668918|import+java.time.Instant;
Instant.now().getEpochSecond();+//timestamp+in+seconds+format+(int)
Instant.now().toEpochMilli();+//+timestamp+in+milliseconds+format+(long)|code-block|syntax|javascript|668919|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Java8 +

<pre><code>import java.time.Instant;
Instant.now().getEpochSecond(); //timestamp in seconds format (int)
Instant.now().toEpochMilli(); // timestamp in milliseconds format (long)
</code></pre>

blocks|key|454682|text|对java.time.LocalDate对象调用asStartOfDay()函数会返回java.time.LocalDateTime对象|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|454683|entityMap^0|1|J|O|E|17|N|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

function call <code>asStartOfDay()</code> on <code>java.time.LocalDate</code> object returns a <code>java.time.LocalDateTime</code> object

I am using JodaTime 1.6.2.

I have a <code>LocalDate</code> that I need to convert to either a (Joda) <code>LocalDateTime</code>, or a <code>java.sqlTimestamp</code> for ormapping.

The reason for this is I have figured out how to convert between a <code>LocalDateTime</code> and a <code>java.sql.Timestamp</code>:

<pre><code>LocalDateTime ldt = new LocalDateTime();
DateTimeFormatter dtf = DateTimeFormatter.forPattern("yyyy-MM-dd HH:mm:ss");
Timestamp ts = Timestamp.valueOf(ldt.toString(dtf));
</code></pre>

So, if I can just convert between <code>LocalDate</code> and <code>LocalDateTime</code>, then I can make the continued conversion to <code>java.sql.Timestamp</code>. Thanks for any nudges in the right direction!

Convert LocalDate to LocalDateTime or java.sql.Timestamp

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。

页面排版不美观，阅读体验差。

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我使用的是JodaTime 1.6.2。我有一个需要转换为(Joda) LocalDateTime的LocalDate，或者是一个用于or的java.sqlTimestamp。原因是我已经知道了如何在LocalDateTime和java.sql.Timestamp之间进行转换LocalDateTime ldt = ne...

问将LocalDate转换为LocalDateTime或java.sql.Timestamp
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