Getting Null response even the request is successful in Retrofit 2

Question

I am getting null in Response body in Retrofit 2. whereas in body i have valid data.

 //using retrofit
    HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
    logging.setLevel(HttpLoggingInterceptor.Level.BODY);
    OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
    httpClient.addInterceptor(logging);

    Retrofit adapter = new Retrofit.Builder()
                        .baseUrl(Config.CUSTOMER_URL)
                        .addConverterFactory(GsonConverterFactory.create())
                        .client(httpClient.build())
                        .build();
    RegisterCustomer api = adapter.create(RegisterCustomer.class);
    Call<Model> call = api.registerCustomer(custName.getText().toString() , phoneNumber.getText().toString(), address.getText().toString(), "abc");
    call.enqueue(new Callback<Model>() {
        @Override
        public void onResponse(Call<Model> call, retrofit2.Response<Model> response) {
            if(response.isSuccessful())
            {
                Log.d("CallBack",response.body().getCustId()+"###"+response.body().getCustUri()+response.code());
            }

        }

        @Override
        public void onFailure(Call<Model> call, Throwable t) {
            Log.d("CallBack","error saving customer"+t.getMessage());

        }
    });

My Interface.

  public interface RegisterCustomer
{
    @FormUrlEncoded
    @POST("customer")
    Call<Model> registerCustomer(
            @Field("cust_name") String cust_name,
            @Field("phone") String phone,
            @Field("address") String address,
            @Field("apikey") String apikey
    //        Callback<Response> callback
    );
}

My logcat is below :

01-25 12:52:26.139 12163-12525/com.lab.yourhomebasket D/OkHttp: --> POST http://192.168.0.101/grocery_api/customer http/1.1
01-25 12:52:26.139 12163-12525/com.lab.yourhomebasket D/OkHttp: Content-Type: application/x-www-form-urlencoded
01-25 12:52:26.142 12163-12525/com.lab.yourhomebasket D/OkHttp: Content-Length: 57
01-25 12:52:26.142 12163-12525/com.lab.yourhomebasket D/OkHttp: cust_name=deep&phone=6656455465&address=bhdjih&apikey=abc
01-25 12:52:26.142 12163-12525/com.lab.yourhomebasket D/OkHttp: --> END POST (57-byte body)
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: <-- 201 Created http://192.168.0.101/grocery_api/customer (386ms)
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Date: Wed, 25 Jan 2017 07:22:29 GMT
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Server: Apache/2.4.18 (Win32) OpenSSL/1.0.2e PHP/7.0.4
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: X-Powered-By: PHP/7.0.4
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Content-Length: 42
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Keep-Alive: timeout=5, max=100
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Connection: Keep-Alive
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: Content-Type: application/json;charset=utf-8
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: {"cust_id":18,"cust_uri":"\/customer\/18"}
01-25 12:52:26.529 12163-12525/com.lab.yourhomebasket D/OkHttp: <-- END HTTP (42-byte body)
01-25 12:52:26.533 12163-12163/com.lab.yourhomebasket D/CallBack: null###null201

My valid response is {"cust_id":18,"cust_uri":"/customer/18"} I am getting null###null201 also data is saved successfully on server.

Model.java

           import com.fasterxml.jackson.annotation.JsonProperty;
        import java.util.HashMap;
        import java.util.Map;
        import com.fasterxml.jackson.annotation.JsonAnyGetter;
        import com.fasterxml.jackson.annotation.JsonAnySetter;
        import com.fasterxml.jackson.annotation.JsonIgnore;
        import com.fasterxml.jackson.annotation.JsonInclude;
        import com.fasterxml.jackson.annotation.JsonProperty;
        import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
        "cust_id",
        "cust_uri"
})
public class Model {

    @JsonProperty("cust_id")
    private Integer custId;
    @JsonProperty("cust_uri")
    private String custUri;
    @JsonIgnore
    private Map<String, Object> additionalProperties = new HashMap<String, Object>();

    @JsonProperty("cust_id")
    public Integer getCustId() {
        return custId;
    }

    @JsonProperty("cust_id")
    public void setCustId(Integer custId) {
        this.custId = custId;
    }

    @JsonProperty("cust_uri")
    public String getCustUri() {
        return custUri;
    }

    @JsonProperty("cust_uri")
    public void setCustUri(String custUri) {
        this.custUri = custUri;
    }

    @JsonAnyGetter
    public Map<String, Object> getAdditionalProperties() {
        return this.additionalProperties;
    }

    @JsonAnySetter
    public void setAdditionalProperty(String name, Object value) {
        this.additionalProperties.put(name, value);
    }

}

Thanks Deepak

Answer 1

Can you please check your Model.java should be like below.

public class Model {

@SerializedName("cust_id")
@Expose
private Integer custId;
@SerializedName("cust_uri")
@Expose
private String custUri;

public Integer getCustId() {
return custId;
}

public void setCustId(Integer custId) {
this.custId = custId;
}

public String getCustUri() {
return custUri;
}

public void setCustUri(String custUri) {
this.custUri = custUri;
}

}