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var Fingerprint = require('express-fingerprint')

router.use(Fingerprint({
	parameters: [
		Fingerprint.useragent,
		Fingerprint.geoip
	]
}));

//数据库存储
await db.collection("pl_visitor_ip").findOne({
		ip: ip,
		fingerprint: req.fingerprint.hash,//唯一hash
});