时区独立

时间:2012-04-24 10:24:06

标签: java jaxb timezone

我有一个转换DateTime的类,如下所示:

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

import javax.xml.bind.annotation.adapters.XmlAdapter;

public class DateFormatConverter extends XmlAdapter<String, Date> {

  private static final String XML_DATE_PATTERN = "yyyy-MM-dd HH:mm:ss.SSS z";

  @Override
  public Date unmarshal(String xmlDate) throws Exception {
    if (xmlDate == null || xmlDate.length() == 0) 
    {
      return null;
    }    
    SimpleDateFormat xmlDateFormat = new SimpleDateFormat(XML_DATE_PATTERN);    
    return xmlDateFormat.parse(xmlDate);
  }

  @Override
  public String marshal(Date date) throws Exception {
    if (date == null) {
      return "";
    }    
    SimpleDateFormat xmlDateFormat = new SimpleDateFormat(XML_DATE_PATTERN);    
    return xmlDateFormat.format(date);
  }
}

我的单元测试:

public void testMarshalDate() throws Exception {

    DateFormatConverter converter = new DateFormatConverter();
    SimpleDateFormat dateFormater  = new SimpleDateFormat("MM-dd-yyyy");
    Date date = dateFormater.parse("10-13-2011");

    String marshalledDate = converter.marshal(date);

    String timezone = Calendar.getInstance().getTimeZone().getDisplayName(true, TimeZone.SHORT);

    System.out.println("Default Timezone:" + TimeZone.getDefault().getDisplayName(true, TimeZone.SHORT));
    System.out.println("Timezone of formatter:" + dateFormater.getTimeZone().getDisplayName(true, TimeZone.SHORT));
    System.out.println("Timezone:" + timezone);
    System.out.println("MarshaledDate: " + marshalledDate);

    assertEquals("Marshalled date string is not expected.", "2011-10-13 00:00:00.000 " + timezone, marshalledDate);
  }

控制台中的输出是:

Default Timezone:ICST
Timezone of formatter:ICST
Timezone:ICST
MarshaledDate: 2011-10-13 00:00:00.000 ICT

例外是:

Marshalled date string is not expected. expected:<...S...> but was:<......>
junit.framework.ComparisonFailure: Marshalled date string is not expected. expected:<...S...> but was:<......>

为什么编组日期有时区ICT,而我所在位置的默认时区是ICST。我应该如何解决使时区独立的问题?

1 个答案:

答案 0 :(得分:0)

我怀疑你看到“时区的一部分”和“时区名称”之间的区别。例如,英国的区域使用GMT和BST,两者都是真正时区的一部分,其ID为“欧洲/伦敦”,但我不知道显示名称是什么那种情况。

如果此处 需要默认时区,请在创建时将其指定为UTC格式的内容。 (在构造函数调用后调用setTimeZone。)