java Jackson JSON 未正确序列化 Joda DateTime
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Hymanson JSON not serializing Joda DateTime correctly
提问by Naresh
I have a Joda DateTime in an Order class:
我在 Order 类中有一个 Joda DateTime：
public class Order {
private DateTime creationTime;
...
}
I have initialized my mapper as follows:
我已按如下方式初始化我的映射器：
mapper.configure(
SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, false);
When I serialize this class, I expect to see creationTime serialized in the ISO-8601 format as follows
当我序列化这个类时，我希望看到创建时间序列化为 ISO-8601 格式，如下所示
{
"creationTime" : "2011-01-01T09:00:00.000-04:00"
}
This is working perfectly fine in my unit test. However, in my web application, the exact same code is serializing all the DateTime fields:
这在我的单元测试中工作得很好。但是，在我的 Web 应用程序中，完全相同的代码正在序列化所有 DateTime 字段：
{
"creationTime" : {
"year" : 2011,
"dayOfMonth" : 17,
"dayOfWeek" : 7,
"era" : 1,
"dayOfYear" : 107,
"weekOfWeekyear" : 15,
"weekyear" : 2011,
"monthOfYear" : 4,
"yearOfEra" : 2011,
"yearOfCentury" : 11,
"centuryOfEra" : 20,
"millisOfSecond" : 590,
"millisOfDay" : 40311590,
"secondOfMinute" : 51,
"secondOfDay" : 40311,
"minuteOfHour" : 11,
"minuteOfDay" : 671,
"hourOfDay" : 11,
"millis" : 1303053111590,
"zone" : {
"fixed" : false,
"uncachedZone" : {
"cachable" : true,
"fixed" : false,
"id" : "America/New_York"
},
"id" : "America/New_York"
},
"chronology" : {
"zone" : {
"fixed" : false,
"uncachedZone" : {
"cachable" : true,
"fixed" : false,
"id" : "America/New_York"
},
"id" : "America/New_York"
}
}
}
What am I missing? I am including Hymanson-core-asl-1.7.6.jar and Hymanson-mapper-asl-1.7.6.jar in my classpath in both cases.
我错过了什么？在这两种情况下，我都在我的类路径中包含 Hymanson-core-asl-1.7.6.jar 和 Hymanson-mapper-asl-1.7.6.jar 。
In some online examples I saw an annotation on DateTime. I don't know if this is needed, but I tried it nevertheness. See below:
在一些在线示例中，我看到了 DateTime 上的注释。我不知道这是否需要，但我从未尝试过。见下文：
public class Order {
@JsonSerialize(using=DateTimeSerializer.class)
private DateTime creationTime;
...
}
This seems to make no difference.
这似乎没什么区别。
Thanks.
谢谢。
P.S. Does anyone know if the Hymanson mailing list is working? I posted this question on the user mailing list, but it doesn't show in the archives. The last post in the archives is dated 24 June 2010.
PS 有谁知道Hyman逊邮件列表是否有效？我在用户邮件列表上发布了这个问题，但它没有显示在档案中。档案中的最后一篇文章日期为 2010 年 6 月 24 日。
回答by Air Mason
This seemed to do the trick for me: How to serialize Joda DateTime with Hymanson JSON processer?
这似乎对我有用： How to serialize Joda DateTime with Hymanson JSON processor?
Basically, the idea was to create a class that extends org.codehaus.Hymanson.map.JsonSerializerwith a overried serialize method:
基本上，这个想法是创建一个类，它扩展org.codehaus.Hymanson.map.JsonSerializer了一个重载的序列化方法：
public void serialize(DateTime value, JsonGenerator gen, SerializerProvider arg2) throws IOException, JsonProcessingException {
gen.writeString(formatter.print(value));
}
Then just use that custom serializer in place of DateTimeSerializer.
然后只需使用该自定义序列化程序代替DateTimeSerializer.
