使用Jackson和spring-boot序列化嵌套的Joda DateTime

Question

我有一个API，我使用Jackson和Sprint Boot写作。此API返回包含Joda DateTime对象的对象（PipelineDetailsResponse），以及包含DateTime对象的对象列表（List<CommitDetail>）。

但是，当我调用API时，我看到startTimestamp和endTimestamp字段已正确序列化为unix时间戳，但CommitDetails＆＃39; timestamp字段不是。我需要做一些特别的事吗？

http localhost:8080/pipelines/FastLane_testGetDetails_100 Authorization:"Bearer ${JWT_TOKEN}"
HTTP/1.1 200 OK
// headers tri

{
    "approvalDetails": null,
    "author": null,
    "buildNumber": 100,
    "commitDetailList": [
        {
            "author": "dalvizu",
            "message": "Some changes",
            "sha1": "1234",
            "timestamp": {
                "iChronology": {
                    "iBase": {
                        "iMinDaysInFirstWeek": 4.0
                    }
                },
                "iMillis": 1487807156248.0
            }
        }
    ],
    "commitUrl": null,
    "deployUrl": null,
    "endTimestamp": 1487720756247,
    "serviceName": "testGetDetails",
    "startTimestamp": 1487717156247,
    "uniqueId": "FastLane_testGetDetails_100"
}

在pom.xml中我添加了jackson-datatype-joda jar：

    <dependency>
        <groupId>com.fasterxml.jackson.datatype</groupId>
        <artifactId>jackson-datatype-joda</artifactId>
        <version>2.8.6</version>
    </dependency>

我要归还的对象：

public class PipelineDetailsResponse
{

    private String uniqueId;
    private String deployUrl;
    private String commitUrl;
    private String serviceName;

    private List<CommitDetail> commitDetailList = new ArrayList<>();
    private String approvalDetails;
    private String author;
    private int buildNumber;

    private DateTime startTimestamp;
    private DateTime endTimestamp;

这引用了一个CommitDetail列表，它还包含一个DateTime字段：

public class CommitDetail
{
    private String author;

    private String sha1;

    private String message;

    private DateTime timestamp;

以下是我的@RestController中的API方法：

@RequestMapping(value = "/pipelines/{uniqueId}", method = RequestMethod.GET)
public ResponseEntity get(@PathVariable String uniqueId)
{
    PipelineDetailsResponse response = service.getPipelineDetails(uniqueId);
    return ResponseEntity.ok(response);
}

有什么想法吗？