add

backend/src/logic4country/read.go

@@ -76,19 +76,6 @@ func ReadHandler(c *gin.Context) {
 		return
 	}
 
-	// 验证查询条件至少有一个不为空
-	if req.CountryID == "" && req.Name == "" && req.Code == "" {
-		zap.L().Warn("⚠️ 请求参数验证失败",
-			zap.String("req_id", reqID),
-			zap.String("reason", "country_id、name、code不能同时为空"),
-		)
-		c.JSON(http.StatusBadRequest, ReadResponse{
-			Success: false,
-			Message: "请求参数错误：country_id、name、code不能同时为空",
-		})
-		return
-	}
-
 	// 处理分页参数默认值
 	page, err := strconv.Atoi(req.Page)
 	if err != nil || page < 1 {