ssssssss-team/spider-flow · error · FileNotFoundException

filePath

Error message

filePath

What it means

FileNotFoundException whose message is the offending path, thrown by FileUtils.writeBytes when new File(filePath).exists() is false. The input at fault is filePath — the file-download/export handler received a path that does not exist on disk (deleted file, wrong working directory, or a path with characters outside FILENAME_PATTERN that was never created).

Solutions

1. Check the file path for typos and verify it is absolute or correct relative to the process working directory.
2. Call new File(filePath).exists() before invoking writeBytes and return a friendly 'file not found' response.
3. Validate uploaded/stored file names against FILENAME_PATTERN to prevent paths that were never written.
4. Ensure the file-generation step ran successfully before the download is requested.

When it happens

Trigger: Thrown at spider-flow-core/src/main/java/org/spiderflow/core/utils/FileUtils.java:36 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ssssssss-team/spider-flow@c799cca99c (2026-09-08). Data as JSON: /api/errors/01c09a05c2cf9090. Report an issue: GitHub.

Appendix: source

Thrown at spider-flow-core/src/main/java/org/spiderflow/core/utils/FileUtils.java:36

    public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+";

    /**
     * 输出指定文件的byte数组
     * 
     * @param filePath 文件路径
     * @param os 输出流
     * @return
     */
    public static void writeBytes(String filePath, OutputStream os) throws IOException
    {
        FileInputStream fis = null;
        try
        {
            File file = new File(filePath);
            if (!file.exists())
            {
                throw new FileNotFoundException(filePath);
            }
            fis = new FileInputStream(file);
            byte[] b = new byte[1024];
            int length;
            while ((length = fis.read(b)) > 0)
            {
                os.write(b, 0, length);
            }
        }
        catch (IOException e)
        {
            throw e;
        }
        finally
        {
            if (os != null)
            {
                try

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