java - Retrofit: Error deserializing array with one element: "out of START_ARRAY token" -

i writing android app utilizing robospice, retrofit, , jackson 2.4.x,

here json trying deserialize coming rest service. elements in "data" array returned notification object want deserialize.

  {   "data": [       {         "uuid": "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx",         "acctno": "xxxxxxxxxx",         "title": "test notification",         "content": "here content.",         "date": "2015-03-24"       }   ]   } 

i first wrapping response in notificationresponse object:

@jsonrootname(value = "data") @jsonignoreproperties(ignoreunknown = true) public class notificationresponse {     @jsonunwrapped    public notification[] notifications; } 

notification object looks this:

  public class notification {        @jsonproperty("uuid")       public string uuid;        @jsonproperty("acctno")       public string acctno;        @jsonproperty("title")       public string title;        @jsonproperty("content")       public string content;        @jsonproperty("date")       public string date;    } 

stacktrace:

  04-01 11:51:17.326  18978-19463/com.xxxxx.android e/﹕ exception occurred during request network execution :com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of com.xxxxx.android.model.notificationresponse out of start_array token               @ [source: retrofit.exceptioncatchingtypedinput$exceptioncatchinginputstream@8b4da58; line: 1, column: 2]       retrofit.retrofiterror: com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of com.xxxxx.android.model.notificationresponse out of start_array token               @ [source: retrofit.exceptioncatchingtypedinput$exceptioncatchinginputstream@8b4da58; line: 1, column: 2]               @ retrofit.restadapter$resthandler.invokerequest(restadapter.java:383)               @ retrofit.restadapter$resthandler.invoke(restadapter.java:240)               @ java.lang.reflect.proxy.invoke(proxy.java:397)               @ $proxy15.notifications(unknown source)               @ com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:21)               @ com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:9)               @ com.octo.android.robospice.request.cachedspicerequest.loaddatafromnetwork(cachedspicerequest.java:48)               @ com.octo.android.robospice.request.defaultrequestrunner.processrequest(defaultrequestrunner.java:150)               @ com.octo.android.robospice.request.defaultrequestrunner$1.run(defaultrequestrunner.java:217)               @ java.util.concurrent.executors$runnableadapter.call(executors.java:422)               @ java.util.concurrent.futuretask.run(futuretask.java:237)               @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)               @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)               @ java.lang.thread.run(thread.java:818)        caused by: retrofit.converter.conversionexception: com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of com.xxxxx.android.model.notificationresponse out of start_array token               @ [source: retrofit.exceptioncatchingtypedinput$exceptioncatchinginputstream@8b4da58; line: 1, column: 2]               @ retrofit.converter.jacksonconverter.frombody(jacksonconverter.java:40)               @ retrofit.restadapter$resthandler.invokerequest(restadapter.java:367)               at retrofit.restadapter$resthandler.invoke(restadapter.java:240)               at java.lang.reflect.proxy.invoke(proxy.java:397)               at $proxy15.notifications(unknown source)               at com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:21)               at com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:9)               at com.octo.android.robospice.request.cachedspicerequest.loaddatafromnetwork(cachedspicerequest.java:48)               at com.octo.android.robospice.request.defaultrequestrunner.processrequest(defaultrequestrunner.java:150)               at com.octo.android.robospice.request.defaultrequestrunner$1.run(defaultrequestrunner.java:217)               at java.util.concurrent.executors$runnableadapter.call(executors.java:422)               at java.util.concurrent.futuretask.run(futuretask.java:237)               at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)               at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)               at java.lang.thread.run(thread.java:818)        caused by: com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of com.xxxxx.android.model.notificationresponse out of start_array token               @ [source: retrofit.exceptioncatchingtypedinput$exceptioncatchinginputstream@8b4da58; line: 1, column: 2]               @ com.fasterxml.jackson.databind.deserializationcontext.mappingexception(deserializationcontext.java:749)               @ com.fasterxml.jackson.databind.deserializationcontext.mappingexception(deserializationcontext.java:745)               @ com.fasterxml.jackson.databind.deser.beandeserializerbase.deserializefromarray(beandeserializerbase.java:1203)               @ com.fasterxml.jackson.databind.deser.beandeserializer._deserializeother(beandeserializer.java:147)               @ com.fasterxml.jackson.databind.deser.beandeserializer.deserialize(beandeserializer.java:126)               @ com.fasterxml.jackson.databind.objectmapper._unwrapanddeserialize(objectmapper.java:3126)               @ com.fasterxml.jackson.databind.objectmapper._readmapandclose(objectmapper.java:3049)               @ com.fasterxml.jackson.databind.objectmapper.readvalue(objectmapper.java:2206)               @ retrofit.converter.jacksonconverter.frombody(jacksonconverter.java:36)               at retrofit.restadapter$resthandler.invokerequest(restadapter.java:367)               at retrofit.restadapter$resthandler.invoke(restadapter.java:240)               at java.lang.reflect.proxy.invoke(proxy.java:397)               at $proxy15.notifications(unknown source)               at com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:21)               at com.xxxxx.android.network.spice.notificationspicerequest.loaddatafromnetwork(notificationspicerequest.java:9)               at com.octo.android.robospice.request.cachedspicerequest.loaddatafromnetwork(cachedspicerequest.java:48)               at com.octo.android.robospice.request.defaultrequestrunner.processrequest(defaultrequestrunner.java:150)               at com.octo.android.robospice.request.defaultrequestrunner$1.run(defaultrequestrunner.java:217)               at java.util.concurrent.executors$runnableadapter.call(executors.java:422)               at java.util.concurrent.futuretask.run(futuretask.java:237)               at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)               at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)               at java.lang.thread.run(thread.java:818) 

thanks in advance. let me know if need further info.

edit: forgot mention using following:

objectmapper om = new objectmapper(); om.configure(deserializationfeature.unwrap_root_value, true); 

you need constructor annotated @jsoncreator in notificationresponse object this:

@jsoncreator public notificationresponse(notification[] notifications) {     this.notifications = notifications; }