Nodejs环境配置UEditor文件图片上传的例子

由于UEditor官网没有提供Nodejs版，于是自己尝试进行修改。先根据PHP版查看所有的请求，得到的action参数值包括config（配置文件）、uploadimage（图片上传）、listimage（在线管理）、catchimage（抓取图片），所以只需要重写这4个请求就基本上实现了我们的需求。

1、首先修改UEditor的ueditor.config.js中的serverUrl属性：

serverUrl:'/ue/uploads'

2、将ueditor/php/config.json文件名重置为config.js，并将其移动到ueditor目录下；

3、创建服务端方法/ue/uploads?action=xxxx，直接上代码（注意：上传功能使用了connect-busboy中间件）

/**
 * Created by Satrong on 2014/7/27.
 * UEditor 上传 服务端 控制器
 */
var http = require('http');
var fs = require('fs');
var path = require('path');
var url = require('url');
var uploadsPath = path.resolve('uploads') + '/';//存储图片的路径
var action = {
    /// 上传图片
    uploadimage: function (req, res) {
        var fstream;
        req.pipe(req.busboy);
        req.busboy.on('file', function (fieldname, file, filename, encoding, mimetype) {
            var filesize = 0;
            var ext = path.extname(filename);
            var newFilename = (new Date() - 0) + ext;
            fstream = fs.createWriteStream(uploadsPath + newFilename);
            file.on('data', function (data) {
                filesize = data.length;
            });
            fstream.on('close', function () {
                res.send(JSON.stringify({
                    "originalName": filename,
                    "name": newFilename,
                    "url": '/uploads/' + newFilename,
                    "type": ext,
                    "size": filesize,
                    "state": "SUCCESS"
                }));
            });
            file.pipe(fstream);
        });
    },
    /// 获取配置文件
    config: function (req, res) {
        return res.json(require('/ueditor/config.js'));
    },
    /// 在线管理
    listimage: function (req, res) {
        fs.readdir(uploadsPath, function (err, files) {
            var total = 0, list = [];
            files.sort().splice(req.query.start, req.query.size).forEach(function (a, b) {
                /^.+...+$/.test(a) &&
                list.push({
                    url: '/uploads/' + a,
                    mtime: new Date(fs.statSync(uploadsPath + a).mtime).getTime()
                });
            });
            total = list.length;
            res.json({state: total === 0 ? 'no match file' : 'SUCCESS', list: list, total: total, start: req.query.start});
        });
    },
    /// 抓取图片（粘贴时将图片保存到服务端）
    catchimage: function (req, res) {
        var list = [];
        req.body.source.forEach(function (src, index) {
            http.get(src, function (_res) {
                var imagedata = '';
                _res.setEncoding('binary');
                _res.on('data', function (chunk) {
                    imagedata += chunk
                });
                _res.on('end', function () {
                    var pathname = url.parse(src).pathname;
                    var original = pathname.match(/[^/]+.w+$/g)[0];
                    var suffix = original.match(/[^.]+$/)[0];
                    var filename = Date.now() + '.' + suffix;
                    var filepath = uploadsPath + 'catchimages/' + filename;
                    fs.writeFile(filepath, imagedata, 'binary', function (err) {
                        list.push({
                            original: original,
                            source: src,
                            state: err ? "ERROR" : "SUCCESS",
                            title: filename,
                            url: '/uploads/catchimages/' + filename
                        });
                    })
                });
            })
        });
        var f = setInterval(function () {
            if (req.body.source.length === list.length) {
                clearInterval(f);
                res.json({state: "SUCCESS", list: list});
            }
        }, 50);
      
    }
};
      
module.exports = {
    "get:/ue/uploads": function (req, res) {
        action[req.query.action](req, res);
    },
    "post:/ue/uploads": function (req, res) {
        action[req.query.action](req, res);
    }
}

以上代码关键部分在action对象中，其余部分可根据自己项目的情况做调整。（服务端没有做上传文件的限制）