如何有效地管理okhttp响应正文中的40MB数据？

Question

我在okhttp响应中得到40MB数据。并且需要花费超过25秒的responseStr = response.body().string()来处理。任何人都可以帮助我减少处理时间。

private String okhttpPost(String xmlRequest) {

 String responseStr = null;
 HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
 logging.setLevel(Level.BASIC);
 OkHttpClient client = new OkHttpClient().newBuilder().addInterceptor(logging).connectTimeout(60, TimeUnit.SECONDS).writeTimeout(60, TimeUnit.SECONDS).readTimeout(60, TimeUnit.SECONDS).build();
 RequestBody formBody = new FormBody.Builder().add("XML", xmlRequest).build();
 Request request = new Request.Builder().url("https://consumerfed/itsection/findData").post(formBody).addHeader("Content-Type", "application/x-www-form-urlencoded").addHeader("Connection", "Keep-Alive").addHeader("Accept-Language", "en-US").addHeader("Accept-Encoding", "application/gzip").build();
 try {
  Response response = client.newCall(request).execute();
  if (response.isSuccessful()) {
   responseStr = response.body().string();
  }
 } catch (IOException exception) {
  exception.printStackTrace();
 }
 return responseStr;
}