Java SimpleDataFormat转换分钟错误

我在两种不同格式之间转换日期对象时遇到问题

这些是日期格式

private final SimpleDateFormat sdf_input = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSSSSZ", Locale.ITALY);
private final SimpleDateFormat sdf_output = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.ITALY);

这是我用来将输入字符串转换为输出字符串的代码

Date tmp = sdf_input.parse(timestamp);
this.timestamp = sdf_output.format(tmp);
System.out.println("CONVERSIONE: "+timestamp+" -> "+this.timestamp);

这是执行的输出

CONVERSIONE: 2016-06-23T18:01:59.652546+0200 -> 2016-06-23T18:12:51Z
CONVERSIONE: 2016-06-23T18:01:59.652612+0200 -> 2016-06-23T18:12:51Z
CONVERSIONE: 2016-06-23T18:01:59.652452+0200 -> 2016-06-23T18:12:51Z
CONVERSIONE: 2016-06-23T18:01:59.867481+0200 -> 2016-06-23T18:16:26Z
CONVERSIONE: 2016-06-23T18:02:00.102929+0200 -> 2016-06-23T18:03:42Z
CONVERSIONE: 2016-06-23T18:02:00.102861+0200 -> 2016-06-23T18:03:42Z
CONVERSIONE: 2016-06-23T18:02:00.102660+0200 -> 2016-06-23T18:03:42Z
CONVERSIONE: 2016-06-23T18:02:00.102995+0200 -> 2016-06-23T18:03:42Z
CONVERSIONE: 2016-06-23T18:02:00.102788+0200 -> 2016-06-23T18:03:42Z
CONVERSIONE: 2016-06-23T18:02:00.103056+0200 -> 2016-06-23T18:03:43Z
CONVERSIONE: 2016-06-23T18:02:00.209643+0200 -> 2016-06-23T18:05:29Z
CONVERSIONE: 2016-06-23T18:02:00.232735+0200 -> 2016-06-23T18:05:52Z
CONVERSIONE: 2016-06-23T18:02:00.231628+0200 -> 2016-06-23T18:05:51Z
CONVERSIONE: 2016-06-23T18:02:00.232609+0200 -> 2016-06-23T18:05:52Z
CONVERSIONE: 2016-06-23T18:02:00.232808+0200 -> 2016-06-23T18:05:52Z
CONVERSIONE: 2016-06-23T18:02:00.231775+0200 -> 2016-06-23T18:05:51Z
CONVERSIONE: 2016-06-23T18:02:00.280670+0200 -> 2016-06-23T18:06:40Z
CONVERSIONE: 2016-06-23T18:02:00.281655+0200 -> 2016-06-23T18:06:41Z
CONVERSIONE: 2016-06-23T18:02:00.282772+0200 -> 2016-06-23T18:06:42Z
CONVERSIONE: 2016-06-23T18:02:00.281788+0200 -> 2016-06-23T18:06:41Z
CONVERSIONE: 2016-06-23T18:02:00.282871+0200 -> 2016-06-23T18:06:42Z
CONVERSIONE: 2016-06-23T18:02:00.282629+0200 -> 2016-06-23T18:06:42Z
CONVERSIONE: 2016-06-23T18:02:00.505474+0200 -> 2016-06-23T18:10:25Z
CONVERSIONE: 2016-06-23T18:02:00.505653+0200 -> 2016-06-23T18:10:25Z
CONVERSIONE: 2016-06-23T18:02:00.506724+0200 -> 2016-06-23T18:10:26Z
CONVERSIONE: 2016-06-23T18:02:00.506792+0200 -> 2016-06-23T18:10:26Z
CONVERSIONE: 2016-06-23T18:02:00.505589+0200 -> 2016-06-23T18:10:25Z
CONVERSIONE: 2016-06-23T18:02:00.506578+0200 -> 2016-06-23T18:10:26Z
CONVERSIONE: 2016-06-23T18:02:04.561530+0200 -> 2016-06-23T18:11:25Z
CONVERSIONE: 2016-06-23T18:02:05.845597+0200 -> 2016-06-23T18:16:10Z
CONVERSIONE: 2016-06-23T18:02:09.981509+0200 -> 2016-06-23T18:18:30Z
CONVERSIONE: 2016-06-23T18:02:12.329653+0200 -> 2016-06-23T18:07:41Z
CONVERSIONE: 2016-06-23T18:02:14.305630+0200 -> 2016-06-23T18:07:19Z
CONVERSIONE: 2016-06-23T18:02:14.305480+0200 -> 2016-06-23T18:07:19Z
CONVERSIONE: 2016-06-23T18:02:14.305565+0200 -> 2016-06-23T18:07:19Z
CONVERSIONE: 2016-06-23T18:02:15.364254+0200 -> 2016-06-23T18:08:19Z
CONVERSIONE: 2016-06-23T18:02:16.243355+0200 -> 2016-06-23T18:06:19Z
CONVERSIONE: 2016-06-23T18:02:16.243537+0200 -> 2016-06-23T18:06:19Z
CONVERSIONE: 2016-06-23T18:02:16.243424+0200 -> 2016-06-23T18:06:19Z
CONVERSIONE: 2016-06-23T18:02:16.243482+0200 -> 2016-06-23T18:06:19Z
CONVERSIONE: 2016-06-23T18:02:16.473340+0200 -> 2016-06-23T18:10:09Z
CONVERSIONE: 2016-06-23T18:02:16.473424+0200 -> 2016-06-23T18:10:09Z
CONVERSIONE: 2016-06-23T18:02:16.533370+0200 -> 2016-06-23T18:11:09Z
CONVERSIONE: 2016-06-23T18:02:19.046342+0200 -> 2016-06-23T18:03:05Z
CONVERSIONE: 2016-06-23T18:02:19.719421+0200 -> 2016-06-23T18:14:18Z
CONVERSIONE: 2016-06-23T18:02:19.719319+0200 -> 2016-06-23T18:14:18Z
CONVERSIONE: 2016-06-23T18:02:19.719555+0200 -> 2016-06-23T18:14:18Z
CONVERSIONE: 2016-06-23T18:02:20.797860+0200 -> 2016-06-23T18:15:37Z
CONVERSIONE: 2016-06-23T18:02:25.528294+0200 -> 2016-06-23T18:11:13Z
CONVERSIONE: 2016-06-23T18:02:25.528375+0200 -> 2016-06-23T18:11:13Z
CONVERSIONE: 2016-06-23T18:02:25.528439+0200 -> 2016-06-23T18:11:13Z
CONVERSIONE: 2016-06-23T18:02:25.528505+0200 -> 2016-06-23T18:11:13Z
CONVERSIONE: 2016-06-23T18:02:25.528592+0200 -> 2016-06-23T18:11:13Z
CONVERSIONE: 2016-06-23T18:02:25.529306+0200 -> 2016-06-23T18:11:14Z
CONVERSIONE: 2016-06-23T18:02:26.139847+0200 -> 2016-06-23T18:04:45Z
CONVERSIONE: 2016-06-23T18:02:26.257798+0200 -> 2016-06-23T18:06:43Z
CONVERSIONE: 2016-06-23T18:02:28.101521+0200 -> 2016-06-23T18:04:09Z
CONVERSIONE: 2016-06-23T18:02:28.432787+0200 -> 2016-06-23T18:09:40Z
CONVERSIONE: 2016-06-23T18:02:28.684613+0200 -> 2016-06-23T18:13:52Z
CONVERSIONE: 2016-06-23T18:02:28.765876+0200 -> 2016-06-23T18:15:13Z
CONVERSIONE: 2016-06-23T18:02:28.846772+0200 -> 2016-06-23T18:16:34Z
CONVERSIONE: 2016-06-23T18:02:29.341246+0200 -> 2016-06-23T18:08:10Z
CONVERSIONE: 2016-06-23T18:02:29.341335+0200 -> 2016-06-23T18:08:10Z
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CONVERSIONE: 2016-06-23T18:02:35.997197+0200 -> 2016-06-23T18:19:12Z
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CONVERSIONE: 2016-06-23T18:02:44.680299+0200 -> 2016-06-23T18:14:04Z
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正如你所看到的，我对会议记录有异议，但我不明白这个问题的原因。 你们谁能帮我

---

非常感谢

问题在于毫秒，您只能有三个输入数字

CONVERSIONE: 2016-06-23T18:02:00.232808+0200 -> 2016-06-23T18:05:52Z

程序认为有232808毫秒~232秒=3分52秒，这是你（错误地）得到的额外结果

---

如何解决你的问题？使用Java8中包含的包中的类。它支持高达纳秒的精度。从以下文件：

LocalTime是表示时间的不可变日期时间对象， 通常被视为小时分钟秒。时间表示为纳秒 精确例如，可以存储值“13:45.30.123456789” 在当地时间

---

问题是毫秒，您只能有三个输入数字

CONVERSIONE: 2016-06-23T18:02:00.232808+0200 -> 2016-06-23T18:05:52Z

程序认为有232808毫秒~232秒=3分52秒，这是你（错误地）得到的额外结果

---

如何解决你的问题？使用Java8中包含的包中的类。它支持高达纳秒的精度。从以下文件：

LocalTime是表示时间的不可变日期时间对象， 通常被视为小时分钟秒。时间表示为纳秒 精确例如，可以存储值“13:45.30.123456789” 在当地时间

---

从上述链接中可以看到Java 8的Java文档，它告诉我们毫秒组件的长度为3个整数：

---

因此，在输入中，只需为毫秒组件输入3个整数。

从上述链接中看到的Java 8文档告诉我们，毫秒组件的长度为3个整数：

---

因此，在输入中，只需为毫秒分量输入3个整数。

您的输入似乎有四位毫秒；从

0

到

999

只有三位数字（1000毫秒是1秒）。您的输入似乎有四位毫秒；从

0

到

999

只有三个数字（1000毫秒是1秒）。