server-send node.js实现

/** * 爬虫 */spiderCtrl.get("/spy", function(req, res) {    res.setHeader("Content-Type", "text/event-stream");    res.setHeader("Cache-Control", "no-cache");    redis.subscribe(appConst.SPIDER_CHANNEL, function(result) {        res.write('data: '+result+"\n\n");//注意要写两个\n    });});