DIYgod/RSSHub · warning · InvalidParameterError

Invalid column

Error message

Invalid column

What it means

Thrown by the Caixin blog route when `column` fails `isValidHost()`. The column becomes the subdomain (`https://${column}.blog.caixin.com`), so it must be a syntactically valid hostname label. Correctly uses `InvalidParameterError`. Note the `column` parameter is optional (`/blog/:column?`); when omitted the handler takes a different branch.

Source

Thrown at lib/routes/caixin/blog.ts:36

        requireConfig: false,
        requirePuppeteer: false,
        antiCrawler: false,
        supportBT: false,
        supportPodcast: false,
        supportScihub: false,
    },
    name: '用户博客',
    maintainers: ['Maecenas'],
    handler,
    description: '通过提取文章全文，以提供比官方源更佳的阅读体验.',
};

async function handler(ctx) {
    const column = ctx.req.param('column');
    const { limit = 20 } = ctx.req.query();
    if (column) {
        if (!isValidHost(column)) {
            throw new InvalidParameterError('Invalid column');
        }
        const link = `https://${column}.blog.caixin.com`;
        const { data: response } = await got(link);
        const $ = load(response);
        const user = $('div.indexMainConri > script[type="text/javascript"]')
            .text()
            .slice('window.user = '.length + 1)
            .split(';', 1)[0]
            .replaceAll(/\s/g, '');
        const authorId = user.match(/id:"(\d+)"/)![1];
        const authorName = user.match(/name:"(.*?)"/)![1];
        const avatar = user.match(/avatar:"(.*?)"/)![1];
        const introduce = user.match(/introduce:"(.*?)"/)![1];

        const {
            data: { data },
        } = await got('https://blog.caixin.com/blog-api/post/posts', {
            searchParams: {

View on GitHub (pinned to bed535e087)

Solutions

1. Pass only the blog slug, e.g. `/caixin/blog/zhangwuchang`.
2. Strip protocol, `.blog.caixin.com`, and any path before submitting.
3. If omitting entirely, use `/caixin/blog` to hit the no-column branch.

Example fix

// before
/caixin/blog/https://zhangwuchang.blog.caixin.com
// after
/caixin/blog/zhangwuchang

import { isValidHost } from '@/utils/valid-host';
if (column && !isValidHost(column)) {
    // reject before building the URL
    throw new Error(`'${column}' is not a valid blog slug / hostname label`);
}

function isBlogSlug(v: string): boolean {
    // DNS-label-ish: lowercase, no protocol, no dots, no slashes
    return /^[a-z0-9-]+$/.test(v);
}

When it happens

Trigger: Supplying a column containing characters illegal in a DNS label (e.g. spaces, slashes, uppercase with mixed punctuation, `..`, URL-encoded `%2F`), or an empty string after the colon.

Common situations: Pasting the full blog URL instead of just the slug (e.g. `https://zhangwuchang.blog.caixin.com` instead of `zhangwuchang`), or including a trailing path segment.

Related errors

• Invalid column
• Invalid type parameter
• unknown site: ${site}
• Invalid type parameter
• Invalid category: ${category}

AI-assisted analysis of DIYgod/RSSHub@bed535e087 (2026-08-12). Data as JSON: /api/errors/8bef8200dbcee7c8. Report an issue: GitHub.