英文:
How do I pass a json body request to api in a map string data structure in Golang?
问题
我是你的中文翻译助手，以下是翻译好的内容：
我对golang和grpc还不熟悉，需要指导和澄清。我有以下定义作为调用外部API的POST请求的参数。
params := map[string]string{"movie": movie,"seat": seat,"pax": fmt.Sprint(pax),"class": class,}
在proto文件中，我有以下定义：
message TicketData {string movie = 1;string seat = 2;uint32 pax = 3;string class = 4;}message SearchMovieRequest {TicketData data = 1;}
然而，在POSTMAN（grpc请求）中，请求体显示如下：
{"data": {"movie": "abc","seat": "123","pax": 2,"class ": "b""}}
请求体应该如下所示：
{"data": [{"movie": "abc","seat": "123","pax": 2,"class ": "b""}]}
我的JSON请求体中缺少方括号。我尝试使用structpb和map string interface，但似乎不起作用。任何指针将不胜感激。谢谢。
英文:
I am new to golang and grpc, need guidance and clarification. I have below definition as a parameter to call a POST request for an external API.
params := map[string]string{"movie": movie,"seat": seat,"pax": fmt.Sprint(pax),"class": class,}
In proto file, I have below:
message TicketData {string movie= 1;string seat= 2;uint32 pax= 3;string class = 4;}message SearchMovieRequest {TicketData data= 1;}
However in POSTMAN (grpc request), the body request is showing below:
{"data":{"movie": "abc","seat": "123","pax": 2,"class ": "b""}}
the request body should be below:
{"data": **[**{"movie": "abc","seat": "123","pax": 2,"class ": "b""}**]** - missing brackets in my json body}
I have tried using structpb and also map string interface. It doesn't seem to work. Any pointer will be appreciated. Thank you.
答案1
得分: 2
你想要将data字段设置为repeated TicketData。
请参考Protobuf [Language Guide (proto3)]中的Specifying Field Rules。
具体来说：
message TicketData {string movie= 1;string seat= 2;uint32 pax= 3;string class = 4;}message SearchMovieRequest {repeated TicketData data= 1;}
> 注意 虽然你包含了Protobuf定义，但你的示例是JSON格式的。Protobuf实现通常包括Protobuf和JSON之间的自动映射，我猜这就是你展示的内容。
英文:
You want the data field to be repeated TicketData.
See e.g. Specifying Field Rules in the Protobuf Language Guide (proto3).
Specifically:
message TicketData {string movie= 1;string seat= 2;uint32 pax= 3;string class = 4;}message SearchMovieRequest {repeated TicketData data= 1;}
> NOTE Although you include protobuf definitions, your examples are JSON. Protobuf implementations usually include automatic mappings between protobuf and JSON which is -- I assume -- what you're presenting.
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