On Wed, Jun 15, 2016 at 8:17 AM, Chad Beaulac <[email protected]> wrote:
> I can't find how to serialize a message directly to JSON. It seems that
> you have to serialize it to binary first and them to JSON and the same
> going in the reverse direction.
>
> To serialize a message to JSON I have to serialize it to binary and then
> output the binary to a string like this
>
> std::string serialized = startMovie.SerializeAsString(); // startMovie
> is a google::protobuf::Message
> std::string json_string;
>
> // Create a TypeResolver used to resolve protobuf message types
> google::protobuf::util::JsonOptions options;
> options.always_print_primitive_fields = true;
> std::unique_ptr<google::protobuf::util::TypeResolver>
> resolver(google::protobuf::util::NewTypeResolverForDescriptorPool(
> "type.googleapis.com",
> google::protobuf::DescriptorPool::generated_pool()));
>
> auto status = google::protobuf::util::BinaryToJsonString(resolver.get(),
> "type.googleapis.com/movie.pbuf.Movie", serialized, &json_string,
> options);
> std::cout << "*******\n" << json_string << std::endl;
>
>
> *But what I really want to do is*
> std::string json_string =
> google::protobuf::util::MessageToJsonString(startMove); // startMovie is a
> google::protobuf::Message
>
>
> And parsing from a JSON string to a Message is a two-step process also like
> // Turn JSON into serialized protobuf message
> std::string movieBin;
> google::protobuf::util::JsonToBinaryString(resolver.get(), "
> type.googleapis.com/movie.pbuf.Movie", json_string, &movieBin);
>
> Movie startMovie2;
> startMovie2.ParseFromString(movieBin);
>
> *But what I really want to do is*
> Movie startMovie2 = google::protobuf::util::JsonToMessage("
> type.googleapis.com/movie.pbuf.Movie", json_string);
>
>
> Maybe this exists and I just haven't found it yet?
>
Sorry, we definitely should add these methods for convenience but just
don't get time for it yet. Could you help file a github issue? Or better
help us add these two methods?
>
> Thanks,
> Chad
>
>
>
>
>
>
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