优化结构

internal/server/handler/dictionary.go

@@ -210,7 +210,7 @@ func (h *Dictionary) Details(c *gin.Context) {
 func (h *Dictionary) Tree(byType bool) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		rawID := c.Query("sysDictionaryID")
-		id, parseErr := strconv.ParseUint(rawID, 10, 32)
+		var id uint64
 		typ := ""
 		if byType {
 			typ = c.Query("type")
@@ -221,9 +221,13 @@ func (h *Dictionary) Tree(byType bool) gin.HandlerFunc {
 		} else if rawID == "" {
 			Fail(c, "字典ID不能为空")
 			return
-		} else if parseErr != nil {
-			Fail(c, "字典ID格式错误")
-			return
+		} else {
+			var parseErr error
+			id, parseErr = strconv.ParseUint(rawID, 10, 32)
+			if parseErr != nil {
+				Fail(c, "字典ID格式错误")
+				return
+			}
 		}
 		items, err := h.service.DictionaryTree(c.Request.Context(), uint(id), typ)
 		if err != nil {