feat: add Go backend compatibility service scaffold

go-backend/internal/http/response/r.go

@@ -0,0 +1,48 @@
+package response
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+)
+
+type R struct {
+	Code int         `json:"code"`
+	Msg  string      `json:"msg"`
+	TS   int64       `json:"ts"`
+	Data interface{} `json:"data,omitempty"`
+}
+
+func OK(data interface{}) R {
+	return R{
+		Code: 0,
+		Msg:  "操作成功",
+		TS:   time.Now().UnixMilli(),
+		Data: data,
+	}
+}
+
+func OKEmpty() R {
+	return R{
+		Code: 0,
+		Msg:  "操作成功",
+		TS:   time.Now().UnixMilli(),
+	}
+}
+
+func Err(code int, msg string) R {
+	return R{
+		Code: code,
+		Msg:  msg,
+		TS:   time.Now().UnixMilli(),
+	}
+}
+
+func ErrDefault(msg string) R {
+	return Err(-1, msg)
+}
+
+func WriteJSON(w http.ResponseWriter, payload R) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	_ = json.NewEncoder(w).Encode(payload)
+}