Go语言开发小技巧&易错点100例（八）

syntax = "proto3";

option go_package = "/test";

package cmd;

message UserInfo {
  string name = 1;
  oneof address {
    string school_addr = 2;
    string home_addr = 3;
  }
}

protoc -I=. --go_out=.. ./hello.proto

type UserInfo struct {
	state         protoimpl.MessageState
	sizeCache     protoimpl.SizeCache
	unknownFields protoimpl.UnknownFields

	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// Types that are assignable to Address:
	//	*UserInfo_SchoolAddr
	//	*UserInfo_HomeAddr
	Address isUserInfo_Address `protobuf_oneof:"address"`
}

// ...

type UserInfo_SchoolAddr struct {
	SchoolAddr string `protobuf:"bytes,2,opt,name=school_addr,json=schoolAddr,proto3,oneof"`
}

// ...

type UserInfo_HomeAddr struct {
	HomeAddr string `protobuf:"bytes,3,opt,name=home_addr,json=homeAddr,proto3,oneof"`
}

func TestJSONMarshal(t *testing.T) {

   u := UserInfo{
      Name:    "zs",
      Address: &UserInfo_HomeAddr{HomeAddr: "Beijing"},
   }

   marshal, _ := json.Marshal(u)

   fmt.Println(string(marshal))

   var u2 UserInfo

   _ = json.Unmarshal(marshal, &u2)

   fmt.Println(u2)
}

func TestProtoMarshal(t *testing.T) {
   u := UserInfo{
      Name:    "zs",
      Address: &UserInfo_HomeAddr{HomeAddr: "Beijing"},
   }

   marshal, _ := proto.Marshal(u)

   fmt.Println(string(marshal))

   var u2 UserInfo

   _ = proto.Unmarshal(marshal, u2)

   fmt.Println(u2)
}

func TestSleep(t *testing.T) {

    <-time.After(time.Second) // 相当于time.Sleep(time.Second)

}