var express = require('express');var router = express.Router();var phantom = require('phantom');var web2img = (url, res, dataType, width, height) => {    phantom.create().then(function (ph) {        ph.createPage().then((page) => {            var settings = {                // operation: "POST",                encoding: "utf8"            };            page.open(url, settings).then((status) => {                console.log(status);                var fmt = 'JPEG';                if (status == 'success') {                    page.property('viewportSize', {width: width || 540, height: height || 960});                    page.renderBase64(fmt).then((data) => {                        if (dataType == 0) {                            res.json({code: 1, data: "data:image/png;base64," + data});                        } else if (dataType == 1) {                            res.send("data:image/png;base64," + data);                        } else if (dataType == 2) {//檔案輸出                            var imageBuffer = new Buffer(data, 'base64');                            res.send(imageBuffer);                        }                    });                } else {                    res.json({code: 0, msg: '生成圖片異常'});                }                ph.exit();            });        });    });};router.all('/web2img', function (req, res, next) {    let url = req.query.url;    let width = req.query.width;    let height = req.query.height;    let dataType = req.query.dataType || 0;    web2img(url, res, dataType, width, height);});module.exports = router;