Node开发站点地图（sitemap）小结

最近在Node端开发商品的站点地图服务，sku大概1000w，根据谷歌的标准，5000个sku是一个文件，所以生成约2000个文件，开发中考虑到服务器性能问题，分批次生成，频率为10s生成10个文件。 用到的Node端的包sitemap

用到的方法有两个

//生存地图文件
import { SitemapStream, SitemapIndexStream } from 'sitemap';
import { createWriteStream } from 'fs';
import moment from 'moment-timezone';
export async function createSitemap({
    list,
    pagePath,
    hostname,
    routerType = 'product',
}: {
    list: any;
    pagePath: string;
    hostname: string;
    routerType?: string;
}) {
    const sitemap = new SitemapStream({ hostname, lastmodDateOnly: true });
    const writeStream = createWriteStream(pagePath);
    sitemap.pipe(writeStream);
        for (let index = 0; index < list.length; index++) {
            sitemap.write({
                url: `/${routerType}/${getSeoSkuUrl(list[index].skuId, list[index].enName)}`,
                changefreq: 'daily',
                priority: 1.0,
                lastmod: moment().format('YYYY-MM-DD'),
            });
        }

    // sitemap.pipe(createGzip());
    sitemap.end();
}

//生成索引文件
export async function sitemapIndex({
    num,
    routerType = 'product',
    hostname,
    pagePath,
}: {
    num: number;
    pagePath: string;
    hostname: string;
    routerType?: string;
}) {
    const smis = new SitemapIndexStream();
    const writeStream = createWriteStream(pagePath);
    smis.pipe(writeStream);
    smis.write({ url: hostname });
    for (let index = 1; index <= num; index++) {
        smis.write({
            url: `${hostname}/sitemap-${routerType}s-${index}.xml`,
            changefreq: 'daily',
            lastmod: moment().format('YYYY-MM-DD'),
        });
    }
    smis.end();
}

/**
 * 
 * @param skuId 
 * @param skuName 
 * @returns 
 */

function getSeoSkuUrl(skuId: string, skuName: string,) {
    try {
    
            skuName = skuName.replace(new RegExp('(\\++)|(/+)|(\\s+)', "g"), '_');
            const p = new RegExp(/(([0-9]+.{1}[0-9a-zA-Z]+)|([0-9a-zA-Z]+)|(\\s))/, "g");
            const list: Array<string> = [];
            let result = skuName.match(p);

            do {
                result = p.exec(skuName)
                result && list.push(result[1]);
            } while (result)

            return list.join('-') +"_" + skuId + ".html";
        } catch (err) {
        console.log(err.stack)
    }
}

这个包生成索引文件SitemapIndexStream的时候日期格式不能设置，介意的可以考虑其他的包。