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POJackson automatic formatting of Joda DateTime to ISO 8601 format
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  1. POJackson automatic formatting of Joda DateTime to ISO 8601 format
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    copied!<p>According to <a href="http://wiki.fasterxml.com/JacksonFAQDateHandling" rel="noreferrer">http://wiki.fasterxml.com/JacksonFAQDateHandling</a>, “DateTime can be <strong>automatically</strong> serialized/deserialized similar to how java.util.Date is handled.” However, I am not able to accomplish this <strong>automatic</strong> functionality. There are StackOverflow discussions related to this topic yet most involve a code-based solution, but based upon the quote above I should be able to accomplish this via simple configuration.</p> <p>Per <a href="http://wiki.fasterxml.com/JacksonFAQDateHandling" rel="noreferrer">http://wiki.fasterxml.com/JacksonFAQDateHandling</a> I have my configuration set so that writing dates as timestamps is false. The result is that java.util.Date types are serialized to ISO 8601 format, but org.joda.time.DateTime types are serialized to a long object representation.</p> <p>My environment is this: </p> <p>Jackson 2.1<br> Joda time 2.1<br> Spring 3.2<br> Java 1.6 </p> <p>My Spring configuration for the jsonMapper bean is </p> <pre><code>@Bean public ObjectMapper jsonMapper() { ObjectMapper objectMapper = new ObjectMapper(); //Fully qualified path shows I am using latest enum ObjectMapper.configure(com.fasterxml.jackson.databind.SerializationFeature. WRITE_DATES_AS_TIMESTAMPS , false); return objectMapper; } </code></pre> <p>My test code snippet is this </p> <pre><code>Date d = new Date(); DateTime dt = new DateTime(d); //Joda time Map&lt;String, Object&gt; link = new LinkedHashMap&lt;String, Object&gt;(); link.put("date", d); link.put("createdDateTime", dt); </code></pre> <p>The resulting snippet of JSON output is this:</p> <pre><code>{"date":"2012-12-24T21:20:47.668+0000"} {"createdDateTime": {"year":2012,"dayOfMonth":24,"dayOfWeek":1,"era":1,"dayOfYear":359,"centuryOfEra":20,"yearOfEra":2012,"yearOfCentury":12,"weekyear":2012,"monthOfYear":12 *... remainder snipped for brevity*}} </code></pre> <p>My expectation is that the DateTime object should matche that of the Date object based upon the configuration. What am I doing wrong, or what am I misunderstanding? Am I reading too much into the word <strong>automatically</strong> from the Jackson documentation and the fact that a string representation was produced, albeit not ISO 8601, is producing the advertised automatic functionality?</p>
 

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