使用响应头部作为Retrofit返回对象的一部分

// 创建一个自定义的拦截器
Interceptor headerInterceptor = new Interceptor() {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();
        Response response = chain.proceed(request);

        // 获取响应头部中的信息
        String customHeader = response.header("Custom-Header");

        // 将响应头部信息添加到返回对象中
        MyResponse myResponse = new MyResponse(response.body(), customHeader);

        return response.newBuilder()
                .body(ResponseBody.create(response.body().contentType(), myResponse.toString()))
                .build();
    }
};

// 创建Retrofit实例时添加拦截器
Retrofit retrofit = new Retrofit.Builder()
        .baseUrl(BASE_URL)
        .client(new OkHttpClient.Builder().addInterceptor(headerInterceptor).build())
        .addConverterFactory(GsonConverterFactory.create())
        .build();

// 定义API接口
interface MyApi {
    @GET("endpoint")
    Call<MyResponse> getResponse();
}

// 发起网络请求
MyApi myApi = retrofit.create(MyApi.class);
Call<MyResponse> call = myApi.getResponse();
call.enqueue(new Callback<MyResponse>() {
    @Override
    public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
        // 处理响应
        MyResponse myResponse = response.body();
        String customHeader = myResponse.getCustomHeader();
        // ...
    }

    @Override
    public void onFailure(Call<MyResponse> call, Throwable t) {
        // 处理错误
    }
});