java - 应为 BEGIN_OBJECT，但在第 13 行第 1 列路径 $ 处为 STRING

Question

这个问题我见过很多次了，但还是不明白。看来我在网站上发送了请求，但其正文不正确。但为什么？可能我不太明白改造是如何工作的，但我不只是收集请求的链接并等待服务器的答复吗？这是链接:here

带有请求的接口(interface)

public interface NService {
    @GET("/computers?p=2")
    Call<Model> getItems();
}

以及带有基本 URL 的类

public class APIUtils {

    public static final String BASE_URL = "http://testwork.nsd.naumen.ru/rest/";

    public static NService getMService() {
        return RetrofitClient.getClient(BASE_URL).create(NService.class);
    }
}

改造构建类

public class RetrofitClient {

    private static Retrofit retrofit = null;


    public static Retrofit getClient(String baseURL) {
        if (retrofit==null) {
            Gson gson = new GsonBuilder()
                    .setLenient()
                    .create();
            retrofit = new Retrofit.Builder()
                    .baseUrl(baseURL)
                    .addConverterFactory(GsonConverterFactory.create(gson))
                    .build();
        }
        return retrofit;
    }
}

JSON 已被解析 this

MainActivity 是:

public class MainActivity extends AppCompatActivity {
    private List<Item> responseModel;
    private NService mService;
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d("testcrap", "before loading set");
        setContentView(R.layout.activity_main);
        mService = APIUtils.getMService(); // Строим retrofit объект, собираем ссылку
        Log.d("testcrap", "before loading");
        loadSomeCrap();
        Log.d("testcrap", "after loading");
    }

    public void loadSomeCrap() {
        Log.d("testcrap", "started parsing");
        mService.getItems().enqueue(new Callback<Model>() {

            @Override
            public void onResponse(Call<Model> call, Response<Model> response) {
                Log.d("testcrap", "started onResponse");

                if(response.isSuccessful()) {
                    Log.d("testcrap", "posts loaded from API");
                }else {
                    Log.d("testcrap", "posts not loaded from API");
                }
            }

            @Override
            public void onFailure(Call<Model> call, Throwable t) {
                //showErrorMes  sage();
                Log.d("testcrap", t.toString());

            }
        });
    }
}

日志:

before loading set
before loading
started parsing
after loading
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 13 column 1 path $

那么，如果请求错误，我应该如何更改才能正常工作？

Answer 1

进行这些更改..

BASE_URL = "http://testwork.nsd.naumen.ru/"

然后在界面上..

@GET("rest/computers?p=2")
.............