响应主体null对接响应代码200改造

Question

无法将数据插入数据库

savePipelist();

    private void savePipelist(final int pipesize, final int pipequantity) {
        detail = "";
        apiInterface = ApiClient.getApiClient().create(ApiInterface.class);
        Call<Pipelist> call = apiInterface.savePipelist(pipesize, pipequantity);
        call.enqueue(new Callback<Pipelist>() {
            @Override
            public void onResponse(@NonNull Call<Pipelist> call, @NonNull Response<Pipelist> response) {
                if (response.isSuccessful() && response.body() != null) {
                    Boolean success = response.body().getSuccess();
                    if (success) {
                        detail = response.body().getMessage().trim();
                    } else {
                        detail = response.body().getMessage().trim();
                    }
                }else{

                }
            }

            @Override
            public void onFailure(@NonNull Call<Pipelist> call, @NonNull Throwable t) {
                detail = t.getLocalizedMessage().trim();
            }
        });}`

  

ApiClient

public class ApiClient {
private static final String BASE_URL = "https://save.000webhostapp.com/";
private static Retrofit retrofit;
public static Retrofit getApiClient(){
 if(retrofit==null){
     retrofit = new Retrofit.Builder()
             .baseUrl(BASE_URL)
             .addConverterFactory(GsonConverterFactory.create())
             .build();
 }
 return retrofit;}}

  

ApiInterface

public interface ApiInterface {
@FormUrlEncoded
@POST("save.php")
Call<Pipelist> savePipelist(
        @Field("pipesize") int pipesize,
        @Field("pipequantity") int pipequantity
);}
public class Pipelist {
@Expose
@SerializedName("id")private int id;
@Expose
@SerializedName("pipesize")private int pipesize;
@Expose
@SerializedName("pipequantity")private int pipequantity;
@Expose
@SerializedName("success")private Boolean success;
@Expose
@SerializedName("message")private String message;

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

public Boolean getSuccess() {
    return success;
}

public void setSuccess(Boolean success) {
    this.success = success;
}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public int getPipesize() {
    return pipesize;
}

public void setPipesize(int pipesize) {
    this.pipesize = pipesize;
}

public int getPipequantity() {
    return pipequantity;
}

public void setPipequantity(int pipequantity) {
    this.pipequantity = pipequantity;
}

每当我调用api statuscode is 200时，响应正文始终为null。我收到的消息是这样的：

Response{protocol=h2, code=200, message=, url=https://save.000webhostapp.com/save.php} 

任何帮助或建议都会受到赞赏。