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?
Thanks,
Chad
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