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Я пытаюсь преобразовать json string в java bean используя Gson, но это возвращаемое значение null.Gson conversion return null java object
public static void convert(String args) {
String json =
"{"body":{"response":{"total":"294","num":"294","filelist":[{"id":"56712","camname":"Camera1","camid":"514","start":"2016-07-08 12:00:38","end":"2016-07-08 12:03:00","stream":"3","recReason":"Activity","filename":"fs/514/2016-07-08/AD_1_1_3_2016_07_08_12_00_57.mrv","snapshot":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_12_00_57.jpg","nvrip":"192.168.0.200:8095"},{"id":"56708","camname":"Camera1","camid":"514","start":"2016-07-08 11:58:14","end":"2016-07-08 12:00:36","stream":"3","recReason":"Activity","filename":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_11_58_33.mrv","snapshot":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_11_58_33.jpg","nvrip":"192.168.0.200:8095"},{"id":"56705","camname":"Camera1","camid":"514","start":"2016-07-08 11:55:49","end":"2016-07-08 11:58:11","stream":"3","recReason":"Activity","filename":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_11_56_08.mrv","snapshot":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_11_56_08.jpg","nvrip":"192.168.0.200:8095"},{"id":"56702","camname":"Camera1","camid":"514","start":"2016-07-08 11:53:25","end":"2016-07-08 11:55:47","stream":"3","recReason":"Activity","filename":"fs-1/514/2016-07-08/AD_1_1_3_2016_07_08_11_53_44.mrv","snapshot":"fs-/514/2016-07-08/AD_1_1_3_2016_07_08_11_53_44.jpg","nvrip":"192.168.0.200:8095"},{"id":"56699","camname":"Camera1","camid":"514","start":"2016-07-08 11:51:00","end":"2016-07-08 11:53:22","stream":"3","recReason":"Activity","filename":"fs/514/2016-07-08/AD_1_1_3_2016_07_08_11_51_19.mrv","snapshot":"fs-/514/2016-07-08/AD_1_1_3_2016_07_08_11_51_19.jpg","nvrip":"192.168.0.200:8095"}],"status":"OK"}}}";
// Now do the magic.
RecordingListResponseDTO data = new Gson().fromJson(json, RecordingListResponseDTO .class);
// Show it.
System.out.println("converted data :"+data);
}
My Bean Class соответствует. RecordingListResponseDTO
public class RecordingListResponseDTO implements Serializable {
private String status;
private int total;
private int num;
List<FileListDTO> fileList;
public RecordingListResponseDTO(){
}
public RecordingListResponseDTO(String status, int total, int num, List<FileListDTO> fileList) {
this.status = status;
this.total = total;
this.num = num;
this.fileList = fileList;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public List<FileListDTO> getFileList() {
return fileList;
}
public void setFileList(List<FileListDTO> fileList) {
this.fileList = fileList;
}
@Override
public String toString() {
return "RecordingListResponseDTO{" +
"status='" + status + '\'' +
", total=" + total +
", num=" + num +
", fileList=" + fileList +
'}';
}}
FileListDTO.java
public class FileListDTO {
private int id;
private String camname;
private int camid;
private Date start;
private Date end;
private int stream;
private String recReason;
private String filename;
private String snapshot;
private String nvrip;
public FileListDTO(int id, String camname, Date start, int camid, Date end, int stream, String recReason, String filename, String snapshot, String nvrip) {
this.id = id;
this.camname = camname;
this.start = start;
this.camid = camid;
this.end = end;
this.stream = stream;
this.recReason = recReason;
this.filename = filename;
this.snapshot = snapshot;
this.nvrip = nvrip;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCamname() {
return camname;
}
public void setCamname(String camname) {
this.camname = camname;
}
public int getCamid() {
return camid;
}
public void setCamid(int camid) {
this.camid = camid;
}
public Date getStart() {
return start;
}
public void setStart(Date start) {
this.start = start;
}
public Date getEnd() {
return end;
}
public void setEnd(Date end) {
this.end = end;
}
public int getStream() {
return stream;
}
public void setStream(int stream) {
this.stream = stream;
}
public String getRecReason() {
return recReason;
}
public void setRecReason(String recReason) {
this.recReason = recReason;
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
public String getSnapshot() {
return snapshot;
}
public void setSnapshot(String snapshot) {
this.snapshot = snapshot;
}
public String getNvrip() {
return nvrip;
}
public void setNvrip(String nvrip) {
this.nvrip = nvrip;
}
@Override
public String toString() {
return "FileListDTO{" +
"id=" + id +
", camname='" + camname + '\'' +
", camid=" + camid +
", start=" + start +
", end=" + end +
", stream=" + stream +
", recReason='" + recReason + '\'' +
", filename='" + filename + '\'' +
", snapshot='" + snapshot + '\'' +
", nvrip='" + nvrip + '\'' +
'}';
}}
Я получаю нулевое значение после преобразования JSON строки в объект Java. что я делаю неправильно, пожалуйста, предложите мне. Благодарим заранее.
Попробуйте этот json после удаления тела и ответа, так как ваша структура класса не справляется с этим. –
Я не могу изменить Json formate, потому что он отправляется с сервера. – MKY