babalae/better-genshin-impact · warning · FileNotFoundException

文件 ' ' 不存在

Error message

文件 '{relativePath}' 不存在

What it means

Thrown by FileAccessBridge.ReadFile after the path-sandbox check passes but File.Exists(fullPath) is false. The requested file does not exist on disk within the allowed directory.

Solutions

1. Call FileExists(relativePath) from the webview before ReadFile to handle absence gracefully.
2. If the file should exist, verify the repo checkout/extraction wrote it; re-import the repo.
3. On case-sensitive volumes, ensure the requested casing matches the on-disk file name.
4. Provide a default/empty response to the webview for optional files instead of throwing.

Example fix

// before
if (!File.Exists(fullPath))
    throw new FileNotFoundException($"文件 '{relativePath}' 不存在");

// after (return null/empty for optional reads, or include resolved path)
if (!File.Exists(fullPath))
    throw new FileNotFoundException($"文件 '{relativePath}' 不存在", fullPath);

// Probe from the webview before reading
if (!bridge.FileExists(relativePath))
    // handle absence gracefully instead of throwing

catch (FileNotFoundException ex) when (ex.Message.Contains("不存在"))
{
    // return empty/null to webview for optional files
    return null;
}

When it happens

Trigger: ReadFile(relativePath): IsPathAllowed returns true, but File.Exists(fullPath) returns false. The path is permitted but the file is absent.

Common situations: A webview script reads a file before it's created; the file was deleted; the path casing on a case-sensitive volume doesn't match; the script expects a file that the repo doesn't ship.

Related errors

• 识别元素在 ms 后超时未消失！
• 仓库文件夹不存在，请至少成功更新一次仓库！
• 读取文件失败
• 写入文件失败
• 访问路径 ' ' 被拒绝

AI-assisted analysis of babalae/better-genshin-impact@a7cb36712d (2026-08-13). Data as JSON: /api/errors/327b03d126d82898. Report an issue: GitHub.

Appendix: source

Thrown at BetterGenshinImpact/Core/Script/WebView/FileAccessBridge.cs:65

            var normalizedPath = fullPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
            return normalizedPath.StartsWith(_normalizedAllowedPath, StringComparison.OrdinalIgnoreCase);
        }
        catch
        {
            return false;
        }
    }

    public string ReadFile(string relativePath)
    {
        try
        {
            var fullPath = Path.Combine(_allowedDirectory, relativePath);
            if (!IsPathAllowed(fullPath))
                throw new UnauthorizedAccessException($"访问路径 '{relativePath}' 被拒绝");

            if (!File.Exists(fullPath))
                throw new FileNotFoundException($"文件 '{relativePath}' 不存在");

            return File.ReadAllText(fullPath, Encoding.UTF8);
        }
        catch (Exception ex)
        {
            throw new Exception($"读取文件失败: {ex.Message}");
        }
    }

    public void WriteFile(string relativePath, string content)
    {
        try
        {
            var fullPath = Path.Combine(_allowedDirectory, relativePath);
            if (!IsPathAllowed(fullPath))
                throw new UnauthorizedAccessException($"访问路径 '{relativePath}' 被拒绝");

            // var directory = Path.GetDirectoryName(fullPath);

View on GitHub (pinned to a7cb36712d)