1

internal/biz/advice_chat.go

@@ -246,6 +246,63 @@ func (a *AdviceChatBiz) ChatWithSession(ctx context.Context, chat *entitys.Advic
 	return
 }
 
+// stripEmpty 递归去除 map/slice 中的空值（空字符串、nil、空数组、空对象），减少 JSON token
+func stripEmpty(v interface{}) interface{} {
+	switch val := v.(type) {
+	case map[string]interface{}:
+		out := make(map[string]interface{})
+		for k, item := range val {
+			cleaned := stripEmpty(item)
+			if cleaned != nil {
+				out[k] = cleaned
+			}
+		}
+		if len(out) == 0 {
+			return nil
+		}
+		return out
+	case []interface{}:
+		var out []interface{}
+		for _, item := range val {
+			cleaned := stripEmpty(item)
+			if cleaned != nil {
+				out = append(out, cleaned)
+			}
+		}
+		if len(out) == 0 {
+			return nil
+		}
+		return out
+	case string:
+		if val == "" {
+			return nil
+		}
+		return val
+	case nil:
+		return nil
+	default:
+		return v
+	}
+}
+
+// compactJSON 先去空值再序列化，比直接 JsonStringIgonErr 更省 token
+func compactJSON(v interface{}) string {
+	data, err := json.Marshal(v)
+	if err != nil {
+		return "{}"
+	}
+	var raw interface{}
+	if err = json.Unmarshal(data, &raw); err != nil {
+		return string(data)
+	}
+	cleaned := stripEmpty(raw)
+	if cleaned == nil {
+		return "{}"
+	}
+	out, _ := json.Marshal(cleaned)
+	return string(out)
+}
+
 func (a *AdviceChatBiz) buildChatPromptResponse(ctx context.Context, chat *entitys.AdvicerChatReq, session *dbmodel.AiAdviceSession, chatList []mongo_model.AdvicerChatHisMongoEntity, chatData *entitys.ChatData) ([]openai.ResponseInputMessage, error) {
 	const outputFormatHint = "\n[输出格式]请用 json 格式返回你的回复，结构为 {\"result\":\"回复内容\",\"mission_status\":\"in_progress|completed|fail\",\"mission_complete_desc\":\"本轮进展小结\"}。"
 	var sys strings.Builder
@@ -261,31 +318,31 @@ func (a *AdviceChatBiz) buildChatPromptResponse(ctx context.Context, chat *entit
 		sys.WriteString("\n")
 	}
 	sys.WriteString(constants.BasePrompt2)
-	// 全量结构化数据注入
+	// 全量结构化数据注入（stripEmpty 去空值省 token）
 	if chatData != nil {
 		if chatData.ProjectInfo != nil {
-			sys.WriteString("\n[项目信息]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.ProjectInfo))
+			sys.WriteString("\n[项目信息]")
+			sys.WriteString(compactJSON(chatData.ProjectInfo))
 		}
 		if chatData.ProjectData != nil && len(chatData.ProjectData) > 0 {
-			sys.WriteString("\n[项目资料]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.ProjectData))
+			sys.WriteString("\n[项目资料]")
+			sys.WriteString(compactJSON(chatData.ProjectData))
 		}
 		if chatData.AdvicerInfo != nil {
-			sys.WriteString("\n[销售信息]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.AdvicerInfo))
+			sys.WriteString("\n[销售信息]")
+			sys.WriteString(compactJSON(chatData.AdvicerInfo))
 		}
 		if chatData.AdvicerVersion != nil && len(chatData.AdvicerVersion) > 0 {
-			sys.WriteString("\n[销售人设风格]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.AdvicerVersion))
+			sys.WriteString("\n[销售人设风格]")
+			sys.WriteString(compactJSON(chatData.AdvicerVersion))
 		}
 		if chatData.ClientInfo != nil {
-			sys.WriteString("\n[客户信息]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.ClientInfo))
+			sys.WriteString("\n[客户信息]")
+			sys.WriteString(compactJSON(chatData.ClientInfo))
 		}
 		if chatData.TalkSkill != nil {
-			sys.WriteString("\n[销售技巧]\n")
-			sys.WriteString(pkg.JsonStringIgonErr(chatData.TalkSkill))
+			sys.WriteString("\n[销售技巧]")
+			sys.WriteString(compactJSON(chatData.TalkSkill))
 		}
 	}
 	sys.WriteString(outputFormatHint)