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我正在尝试使用 Jackson 库来反序列化 Json 对象，但在 Joda Datetime 格式反序列化中遇到了一些麻烦。

此代码引发以下错误：

无法解析 Lorg/joda/time/base/AbstractInstant；注释类 1557

DataWrapper list = mapper.readValue(response, DataWrapper.class);

我已经尝试找到有关此的内容，但什么也没有。

有完整的代码：

public class DataWrapper {
    public List<ScheduleEntry> data;
}

public static class ScheduleEntry {
    public long ID;
public DateTime StartDate;
public DateTime EndDate;
public String Description;
}

WebService callWebService = new WebService(SERVICE_URI);        
String response = callWebService.webInvoke("/GetScheduleEntrys", params);

ObjectMapper mapper = new ObjectMapper();

try
{    
    DataWrapper list = mapper.readValue(response, DataWrapper.class);

    List<ScheduleEntry> items = list.data;
}

网络服务：

[OperationContract]
[WebInvoke(Method = "POST",
   UriTemplate = "GetScheduleEntrys",
   BodyStyle = WebMessageBodyStyle.WrappedRequest,
   ResponseFormat = WebMessageFormat.Json,
   RequestFormat = WebMessageFormat.Json)]
List<ScheduleEntry> GetScheduleEntrys(string Token);

JSON：

[{"Description":"Cliente José","EndDate":"/Date(1353319200000+0000)/","ID":0,"StartDate":"/Date(1353315600000+0000)/"},{" Description":"Cliente Carlos","EndDate":"/Date(1353348000000+0000)/","ID":0,"StartDate":"/Date(1353344400000+0000)/"},{"Description": "Cliente Pedro","EndDate":"/Date(1353513600000+0000)/","ID":0,"StartDate":"/Date(1353510000000+0000)/"},{"Description":"Cliente Marco ","EndDate":"/Date(1353664800000+0000)/","ID":0,"StartDate":"/Date(1353661200000+0000)/"},{"Description":"Cliente José","结束日期”：”/Date(1353319200000+0000)/","ID":0,"StartDate":"/Date(1353315600000+0000)/"},{"Description":"Cliente Carlos","EndDate":"/Date( 1353348000000+0000)/","ID":0,"StartDate":"/Date(1353344400000+0000)/"},{"Description":"Cliente Pedro","EndDate":"/Date(1353513600000+0000 )/","ID":0,"StartDate":"/Date(1353510000000+0000)/"},{"Description":"Cliente Marco","EndDate":"/Date(1353664800000+0000)/" ,"ID":0,"开始日期":"/日期(1353661200000+0000)/"}]/Date(1353348000000+0000)/","ID":0,"StartDate":"/Date(1353344400000+0000)/"},{"Description":"Cliente Pedro","EndDate":"/Date( 1353513600000+0000)/","ID":0,"StartDate":"/Date(1353510000000+0000)/"},{"Description":"Cliente Marco","EndDate":"/Date(1353664800000+0000 )/","ID":0,"StartDate":"/Date(1353661200000+0000)/"}]/Date(1353348000000+0000)/","ID":0,"StartDate":"/Date(1353344400000+0000)/"},{"Description":"Cliente Pedro","EndDate":"/Date( 1353513600000+0000)/","ID":0,"StartDate":"/Date(1353510000000+0000)/"},{"Description":"Cliente Marco","EndDate":"/Date(1353664800000+0000 )/","ID":0,"StartDate":"/Date(1353661200000+0000)/"}]/Date(1353664800000+0000)/","ID":0,"StartDate":"/Date(1353661200000+0000)/"}]/Date(1353664800000+0000)/","ID":0,"StartDate":"/Date(1353661200000+0000)/"}]

完整日志

01-03 17:39:24.700：E/dalvikvm(18494)：无法解析 Lorg/joda/time/base/AbstractInstant；注释类 1557 01-03 17:39:28.505: W/dalvikvm(18494): threadid=11: 线程以未捕获的异常退出 (group=0x40c4d1f8) 01-03 17:39:28.650: E/AndroidRuntime(18494): FATAL例外：AsyncTask #1 01-03 17:39:28.650：E/AndroidRuntime(18494)：java.lang.RuntimeException：执行 doInBackground() 01-03 17:39:28.650 时发生错误：E/AndroidRuntime(18494) : 在 android.os.AsyncTask$3.done(AsyncTask.java:278) 01-03 17:39:28.650: E/AndroidRuntime(18494): 在 java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java: 273) 01-03 17:39:28.650: E/AndroidRuntime(18494): 在 java.util.concurrent.FutureTask.setException(FutureTask.java:124) 01-03 17:39:28.650: E/AndroidRuntime(18494) ：在 java.util.concurrent.FutureTask$Sync。

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2 回答 2

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异常表明您使用的是不兼容的 Joda 版本（很可能是旧版本）。

但是查看 JSON，您的日期值正在使用一些非标准符号进行序列化，因此您可能还需要编写自定义处理程序（或更改序列化格式）。

于 2013-01-03T18:39:49.557 回答
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鉴于您拥有的 JSON，您需要在映射器中包含此语句。 DataWrapper.setData(mapper.readValue(response, new TypeReference<List<ScheduleEntry>>() { }));

这不会解决您面临的原始问题： Unable to resolve Lorg/joda/time/base/AbstractInstant; annotation class 1557

于 2013-01-03T17:49:52.123 回答