DIYgod/RSSHub · error · Error

未知的金属类型

Error message

未知的金属类型

What it means

The 长江有色网 price-adjustment route maps the `category` path parameter to a per-metal subdomain through SUB_DOMAIN_MAP (keys: copper, alu, zn, sn, pb, ni). Any value that is not a key yields undefined, and the handler throws a generic Error with the Chinese message '未知的金属类型' ('unknown metal type') before issuing the request. Note the codes are short forms (alu, not aluminium).

Solutions

1. Use one of the six supported codes: copper, alu, zn, sn, pb, ni.
2. Cross-check the value against the route's `parameters.category.options` list declared in the route config.
3. For a new metal, confirm ccmn has a dedicated subdomain and add a SUB_DOMAIN_MAP entry.

Example fix

// before
//   /ccmn/price-adjustment/aluminium
// after
//   /ccmn/price-adjustment/alu

const KNOWN_METALS = new Set(['copper', 'alu', 'zn', 'sn', 'pb', 'ni']);
function isKnownMetal(category: string): boolean {
  return KNOWN_METALS.has(category);
}

function isKnownMetal(category: string): category is keyof typeof SUB_DOMAIN_MAP {
  return Object.prototype.hasOwnProperty.call(SUB_DOMAIN_MAP, category);
}

When it happens

Trigger: Requesting `/ccmn/price-adjustment/<x>` where <x> is not one of copper, alu, zn, sn, pb, ni — e.g. `/ccmn/price-adjustment/iron` or `/ccmn/price-adjustment/aluminium`.

Common situations: Supplying the full English name (aluminium, tin, lead, nickel) or the Chinese metal name instead of the documented short code; typos; copy-pasting a path segment from the source site that differs from the route code.

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AI-assisted analysis of DIYgod/RSSHub@bed535e087 (2026-08-12). Data as JSON: /api/errors/ebce61402937d29e. Report an issue: GitHub.

Appendix: source

Thrown at lib/routes/ccmn/price-adjustment.tsx:91

    pb: 'pb.ccmn.cn',
    ni: 'ni.ccmn.cn',
};

const READABLE_CATEGORIES = {
    copper: '铜',
    alu: '铝',
    zn: '锌',
    sn: '锡',
    pb: '铅',
    ni: '镍',
};

async function handler(ctx) {
    const category = ctx.req.param('category');

    const subdomain = SUB_DOMAIN_MAP[category];
    if (!subdomain) {
        throw new Error('未知的金属类型');
    }

    const url = `https://${subdomain}`;

    const response = await got({
        method: 'get',
        url,
    });

    const $ = load(response.data);

    const items = $('.content1-text-div')
        .toArray()
        .map((item) => {
            const $item = $(item);
            const dataId = $item.attr('data-id');

            const $top = $item.find('.top');

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