检查xsd datetime在转换为Java对象之前是否有定义的时区 [英] Check if xsd datetime had a defined timezone before conversion to Java object

问题描述

这是topo，我有从XSD文件生成的Java类的JAXB。对于 xsd：datetime 类型，转换通过 public static Calendar javax.xml.bind.DatatypeConverter.parseDateTime（String lexicalXSDDateTime） 方法。

Here's the topo, i have JAXB generated java classes from XSD files. For xsd:datetime type, the transformation goes through the public static Calendar javax.xml.bind.DatatypeConverter.parseDateTime(String lexicalXSDDateTime) method.

我无法访问日期的字符串值（xml文件中的一个），我所有的权限都是生成的日历对象，我想知道的是，是否在日期的原始字符串值中，是否定义了时区。

I do not have access to the string value of the date (the one in the xml file), all i have access to is the generated Calendar object, and what i want to know, is whether in the original string value of the date, a timezone was defined or not.

例如，这个字符串 2015-07-29T11：17：02.428 + 02：00 有一个定义的时区，其中这个 2015-07-29T11：17：02.428 有一个未定义的，我想知道的是哪个生成 Calendar 一个定义的时区。

For example, this string 2015-07-29T11:17:02.428+02:00 has a defined timezone, where this one 2015-07-29T11:17:02.428 have an undefined one, and all i want to know is which generated Calendar object had originally a defined timezone.

我尝试了 Calendar.getTimeZone（）方法，但似乎xsd到java转换不会使时区无效。

I tried the Calendar.getTimeZone() method, but it seems that the xsd to java transformation doesn't nullify the timezone.

例如，以下代码

System.out.println(DatatypeConverter.parseDateTime("2015-07-29T11:17:02.428+02:00").getTimeZone());
System.out.println(DatatypeConverter.parseDateTime("2015-07-29T11:17:02.428").getTimeZone());

输出此

sun.util.calendar.ZoneInfo [id =GMT + 02：00，offset = 7200000，dstSavings = 0，useDaylight = false，transitions = 0，lastRule = null]

sun.util.calendar.ZoneInfo[id="GMT+02:00",offset=7200000,dstSavings=0,useDaylight=false,transitions=0,lastRule=null]

sun.util.calendar.ZoneInfo [id =Europe / Paris，offset = 3600000，dstSavings = 3600000，useDaylight = true，transitions = 184，lastRule = java.util.SimpleTimeZone [id = Europe /巴黎，offset = 3600000，dstSavings = 3600000，useDaylight = true，startYear = 0，startMode = 2，startMonth = 2，startDay = -1，startDayOfWeek = 1，startTime = 3600000，startTimeMode = 2，endMode = 2，endMonth = 9 ，endDay = -1，endDayOfWeek = 1，endTime = 3600000，endTimeMode = 2]]

sun.util.calendar.ZoneInfo[id="Europe/Paris",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=184,lastRule=java.util.SimpleTimeZone[id=Europe/Paris,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2]]

推荐答案

p>我在另一个问题上发布了这个问题的答案： java - 如何检查日历实例是否最初是错误的日期。

I posted the answer to this question on my other question: java - How to check if a Calendar instance was originally a wrong date.

原则是使用JodaTime API和CustomTime对象的自定义适配器和自定义包装器类型。

The principle is to use JodaTime API and a custom Adapter and a custom wrapper type for the DateTime object.

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