Java 将JSON响应映射到相应的POJO

当从json获得响应时，我的项目有问题

这是我的JSON结构

{
"RC": "00",
"FakturPengajuan": "PO201901310000000007",
"Plafond": "1,000,000.00",
"Pokok": "500,000.00",
"Bunga": "10,000.00",
"TotalBayar": "510,000.00",
"JT": {
    "1": {
        "Ke": 1,
        "JatuhTempo": "28 Februari 2019",
        "Pokok": "500,000.00",
        "Bunga": "10,000.00",
        "Jumlah": "510,000.00",
        "BakiDebet": "500,000.00"
    },
    "2": {
        "Ke": 2,
        "JatuhTempo": "31 Maret 2019",
        "Pokok": "500,000.00",
        "Bunga": "10,000.00",
        "Jumlah": "510,000.00",
        "BakiDebet": "0.00"
    }
}

}

这是我的应答码

@Override
        public void onFinish(String cResponse) {
            String cError = null;
            if (cResponse != null){
                try{
                    Response response = gson.fromJson(cResponse,Response.class);
                    if (response != null && response.getRC() != null){
                        if (response.getRC().equals("00")){



                        }else cError = response.getMSG();
                    }else{
                        cError = "Error";
                    }
                }catch (Exception e){
                    cError = "Error" + e.getMessage();
                    FuncApp.showLog("Response " + e.getMessage());
                }

            }else cError = "Gagal";
            if (cError != null)
                new FuncApp.OkNoDialog(getActivity(),"Gagal Aktivasi",cError ,null,"OK").setOnFinish(new FuncApp.OkNoDialog.ButtonClick() {
                    @Override
                    public void onClick(Boolean isOKButton) {

                    }
                });

            funcApp.closeProgresDialog();
        }

这是我的响应getter和setter，不是全部，只是我使用的所有变量

public class Response {
private String RC;
private String FakturPengajuan, Plafond, Pokok, Bunga, TotalBayar;
private String[] JT;

public Response(){}
  }

我在得到响应时遇到了这个错误，代码应该是什么

java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $

---

POJO类

Response

有一些无效的结构字段

JT

不是数组，应该有getter和setter

public class Response {
private String RC;
private String FakturPengajuan, Plafond, Pokok, Bunga, TotalBayar;
private Map<String,MapValue> JT;

 public Response(){}
  }

---

当发布代码或在本例中为JSON数据时，请确保任何试图提供帮助的人都可以在重新创建问题时轻松使用它。谢谢。我已经在响应类中完成了getter和setter，并且已经将JT更改为Map，但是仍然无法使用stacktrace处理相同的errorUpdate错误，也无法在@RPH再次验证json

public class MapValue {

 private int Ke;
 private String JatuhTempo;
 private String Pokok;
 private String Bunga;
 private String Jumlah;
 private String BakiDebet;

 }