imobile上传多媒体数据集至iportal/iserver失败，登录在代码中都能成功，但是拍照，拍视频，录音上传后就报上传数据集失败，具体错误信息如下：
08-08 10:44:42.798 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: org.json.JSONException: No value for error
08-08 10:44:42.798 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at org.json.JSONObject.getJSONObject(JSONObject.java:609)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at com.supermap.services.DataUploadService.addFeaturesOnService(DataUploadService.java:1103)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at com.supermap.services.DataUploadService.commitToWebDataset(DataUploadService.java:945)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at com.supermap.services.DataUploadService.commitDatasetToServer(DataUploadService.java:688)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at com.supermap.services.DataUploadService$9.run(DataUploadService.java:664)
08-08 10:44:42.799 19880-21060/com.lcu.sharingcycle.IBike_public W/System.err: at java.lang.Thread.run(Thread.java:761)
08-08 10:44:42.799 19880-19880/com.lcu.sharingcycle.IBike_public I/System.out: 上传数据集失败 :
08-08 10:44:42.799 19880-19880/com.lcu.sharingcycle.IBike_public I/System.out: org.json.JSONException: No value for error
iserver/iportal上的工作空间如下：
MQDemo_MediaDataset属性表如下：
