Question

我从我的 API 的JSON获取response.body()时遇到问题。

Logcat显示请求成功，但是当我要将主体复制到模型对象时，它为null。

我已经只将JSON缩短为一个键和一个值（logcat的结尾），但是即使那样我也无法读取响应。

Logcat：

D/OkHttp: <-- 200  http://10.0.2.2:8080/groups?page=1&limit=25 (33ms)    
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-Frame-Options: DENY
Content-Type: application/json;charset=UTF-8
Transfer-Encoding: chunked
Date: Mon, 14 Jan 2019 19:31:10 GMT
D/OkHttp: [{"name":"Delfiny"}]
<-- END HTTP (20-byte body)

模型类：

public class GroupsResponseModel {

@SerializedName("name")
@Expose
private String name;

public GroupsResponseModel() {
}

public GroupsResponseModel(String name) {
    this.name = name;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}
}

ApiInterface：

@GET("groups")
Call<GroupsResponseModel> getGroups(@Query("page") int page, 
@Query("limit") int limit);

改装和拦截器：

public static Retrofit getClient()
{
    HttpLoggingInterceptor interceptor = new 
HttpLoggingInterceptor();
    interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

    OkHttpClient okHttpClient = new OkHttpClient().newBuilder().
            addInterceptor(new Interceptor() {
        @Override
        public okhttp3.Response intercept(Chain chain) throws 
IOException {
            Request originalRequest = chain.request();

            Request.Builder builder = originalRequest.newBuilder().header(Utils.getAuthKey(),
                    Utils.getAuthValue());

            Request newRequest = builder.build();
            return chain.proceed(newRequest);
        }
    })
            .addInterceptor(interceptor)
            .build();

    retrofit = new Retrofit.Builder()
            .baseUrl(Utils.getURL())
            .client(okHttpClient)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    return retrofit;
}

呼叫入队：

Call<GroupsResponseModel> call = apiInterface.getGroups(1, 25);

            call.enqueue(new Callback<GroupsResponseModel>() {
                @Override
                public void onResponse(Call<GroupsResponseModel> call, Response<GroupsResponseModel> response) {

                     groupsResponseModel = response.body();

                    Toast.makeText(GroupActivity.this, "response: " + groupsResponseModel.getName(), Toast.LENGTH_LONG).show();
                    //groups = new ArrayList<>(Arrays.asList(groupsResponseModel.getName()));
                    groupAdapter = new GroupAdapter(groups);
                    recyclerView.setAdapter(groupAdapter);

                }

                @Override
                public void onFailure(Call<GroupsResponseModel> call, Throwable t) {

                }
            });

需要分析预期的结果。

Answer 1

如果您完全确定服务器发送了正确的json，请检查您的pojo类。首先删除@Exposed注释

Answer 2

我建议您使用Profiler之类的Android Studio调试工具来监视可在Profiler的“网络”部分轻松访问的网络（API调用）请求和响应正文，请查看以下链接：Profiler Android

改造call.enqueue代码200，但response.body（）为空

2 个答案: