title: Jackson JSON not serializing Joda DateTime correctly
body: <p>I have a Joda DateTime in an Order class:</p>
  
  <pre><code>public class Order {
      private DateTime creationTime;
      ...
  }
  </code></pre>
  
  <p>I have initialized my mapper as follows:</p>
  
  <pre><code>mapper.configure(
          SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, false);
  </code></pre>
  
  <p>When I serialize this class, I expect to see creationTime serialized in the ISO-8601 format as follows</p>
  
  <pre><code>{
    "creationTime" : "2011-01-01T09:00:00.000-04:00"
  }
  </code></pre>
  
  <p>This is working perfectly fine in my unit test. However, in my web application, the exact same code is serializing all the DateTime fields:</p>
  
  <pre><code>{
    "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"
        }
      }
  }
  </code></pre>
  
  <p>What am I missing? I am including jackson-core-asl-1.7.6.jar and jackson-mapper-asl-1.7.6.jar in my classpath in both cases.</p>
  
  <p>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:</p>
  
  <pre><code>public class Order {
      @JsonSerialize(using=DateTimeSerializer.class)
      private DateTime creationTime;
      ...
  }
  </code></pre>
  
  <p>This seems to make no difference.</p>
  
  <p>Thanks.</p>
  
  <p>P.S. Does anyone know if the Jackson 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.</p>