为什么google protobuf不支持map的序列化和反序列化
最新回答
寒岛春信
2022-08-07 13:41:33
proto2的文档就已经提到了Maps（Language Guide），但我用protoc2.6编译的时候，map关键字无法通过编译，protoc3.0编译正常，proto举例：
message Person {
required int32 id = 1;
required string name = 2;
optional string email = 3;
map<string, string> values= 4;
}
另外，
官方文档（
https://developers.google.com/protocol-buffers/docs/proto#Maps
）说了：The map syntax is equivalent to the following on the wire, so protocol buffers implementations that do not support maps can still handle your data:
message MapFieldEntry {
key_type key = 1;
value_type value = 2;
}
repeated MapFieldEntry map_field = N;
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