改造2.0b2:如何从响应中获取InputStream? [英] retrofit 2.0b2 : How to get InputStream from the response?
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问题描述
我正在使用Retrofit 2.0b2。得到回复后,我尝试通过以下方式从响应中获取InputStream:
I'm using Retrofit 2.0b2. After getting a response, I tried getting an InputStream from the response by :
Response<JsonNode> response = call.execute();
InputStream is = response.raw().body().byteStream();
但应用程序一直在抛出:
but the app keep throwing :
java.lang.IllegalStateException: Cannot read raw response body of a converted body.
at retrofit.OkHttpCall$NoContentResponseBody.source(OkHttpCall.java:184)
at com.squareup.okhttp.ResponseBody.byteStream(ResponseBody.java:43)
at ...
尽管响应正确返回。我在这里做错了什么?
Despite the response returned correctly. What am I doing wrong here ?
推荐答案
如果你想要原始流,请告诉retrofit返回一个OkHttp ResponseBody
。
If you want the raw stream, tell retrofit to return an OkHttp ResponseBody
.
import okhttp3.ResponseBody;
import retrofit2.Response;
Response<ResponseBody> response = call.execute();
try ( ResponseBody responseBody = response.body() ) {
InputStream is = responseBody.byteStream();
// ...
}
请记住也要更新你的界面。
Remember to update your interface, too.
由于响应正文由有限的资源支持,因此必须在使用后关闭 responseBody
对象。因此,上面的代码使用 try-with-resources 语句。
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