babalae/better-genshin-impact · error · InvalidDataException

物品原型表中没有 item_class_id 以 weapon: 开头的武器记录。

Error message

物品原型表中没有 item_class_id 以 weapon: 开头的武器记录。

What it means

Thrown by ExtractWeaponNames after iterating all rows when no entry had an item_class_id starting with 'weapon:'. The matcher relies entirely on this filtered set; without weapon records it cannot perform any name correction. This signals the item.csv is the wrong file, an outdated version, or a different-language export that uses a different class-id scheme.

Source

Thrown at BetterGenshinImpact/GameTask/CharacterDevelopment/WeaponNameMatcher.cs:115

            {
                throw new InvalidDataException("物品原型表存在列数不足的记录。");
            }

            if (!columns[itemClassIdIndex].Trim().StartsWith("weapon:", StringComparison.OrdinalIgnoreCase))
            {
                continue;
            }

            var name = columns[itemNameIndex].Trim();
            if (!string.IsNullOrWhiteSpace(name))
            {
                names.Add(name);
            }
        }

        if (names.Count == 0)
        {
            throw new InvalidDataException("物品原型表中没有 item_class_id 以 weapon: 开头的武器记录。");
        }

        return names.OrderBy(name => name, StringComparer.Ordinal).ToArray();
    }

    /// <summary>
    /// 计算两个字符串的 Levenshtein 编辑距离。
    /// </summary>
    /// <remarks>仅保留两行动态规划状态，额外空间复杂度为 O(min(m,n))。</remarks>
    internal static int LevenshteinDistance(string source, string target)
    {
        if (source.Length == 0)
        {
            return target.Length;
        }

        if (target.Length == 0)
        {

View on GitHub (pinned to a7cb36712d)

Solutions

1. Verify the item.csv at Assets/Model/ItemV2/ is the original bundled file that includes weapon rows.
2. Check that item_class_id values in the CSV actually contain entries prefixed with 'weapon:'.
3. Restore the asset from a known-good release of the project.

Example fix

null

var hasWeaponRows = rows.Any(r => r[itemClassIdIndex].Trim().StartsWith("weapon:", StringComparison.OrdinalIgnoreCase));
if (!hasWeaponRows) { /* abort: wrong CSV */ }

null

try { var names = ExtractWeaponNames(headers, rows); }
catch (InvalidDataException) { /* no weapon data — restore correct item.csv */ }

When it happens

Trigger: item.csv loads and parses correctly but every row's item_class_id starts with a non-weapon prefix (e.g., 'material:', 'food:'), or the column value format changed in a game data update.

Common situations: Using a custom or community-curated item.csv that omits weapons. A Genshin Impact data version change altered the item_class_id naming convention. The wrong CSV was placed at Assets/Model/ItemV2/item.csv.

Related errors

• 武器名称表中没有可用的武器。
• 物品原型表存在列数不足的记录。
• 未找到物品 ONNX 配套表格。
• 物品原型表缺少表头。
• 物品原型表存在无法读取的记录。

AI-assisted analysis of babalae/better-genshin-impact@a7cb36712d (2026-08-13). Data as JSON: /api/errors/79d13289a770817b. Report an issue: GitHub.