这里的链接https://github.com/cyrus-and/chrome-remote-interface/issues/92给了我一些想法:
const fs = require('fs');
const CDP = require('chrome-remote-interface');
function loadForScrot(url) {
return new Promise(async (fulfill, reject) => {
const tab = await CDP.New();
const client = await CDP({tab});
const {Page} = client;
Page.loadEventFired(() => {
fulfill({client, tab});
});
await Page.enable();
await Page.navigate({url});
});
}
async function process(urls) {
try {
const handlers = await Promise.all(urls.map(loadForScrot));
for (const {client, tab} of handlers) {
const {Page} = client;
await CDP.Activate({id: tab.id});
const filename = `/tmp/scrot_${tab.id}.png`;
const result = await Page.captureScreenshot();
const image = Buffer.from(result.data, 'base64');
fs.writeFileSync(filename, image);
console.log(filename);
await client.close();
}
} catch (err) {
console.error(err);
}
}
process(['http://example.com',
'http://example.com',
'http://example.com',
'http://example.com',
'http://example.com',
'http://example.com',
'http://example.com',
'http://example.com']);