moleculer集成express且使用moleculer-w

  该实例为moleculer集成express、moleculer-web、expres文件上传中间件multer试下文件上传功能
  代码如下：

"use strict";
const ApiGateway = require("moleculer-web");
const fs = require('fs');
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var logger = require('morgan');
var moment = require('moment');
var multer = require('multer');

module.exports = {
    name: "api",
    mixins: [ApiGateway],
    settings: {
        port: process.env.PORT || 4000,
        //关闭moleculer开发http服务功能
        server: false,
        //打开moleculer-web中间件功能
        middleware: true,
        routes: [
            {
                aliases: {
                    'POST file/upload'(req, res) {
                        res.end('aaa');
                    }
                }
            }
        ],
        //设置跨域
        cors: {
            // Configures the Access-Control-Allow-Origin CORS header.
            origin: ["*"],
            // Configures the Access-Control-Allow-Methods CORS header. 
            methods: ["GET", "OPTIONS", "POST", "PUT", "DELETE"],
            // Configures the Access-Control-Allow-Headers CORS header.
            allowedHeaders: ['Origin', 'X-Requested-With', 'Content-Type', 'Accept', 'Content-Length', 'Authorization'],
            // Configures the Access-Control-Expose-Headers CORS header.
            exposedHeaders: [],
            // Configures the Access-Control-Allow-Credentials CORS header.
            credentials: true,
            // Configures the Access-Control-Max-Age CORS header.
            maxAge: 3600
        },
    },
    created() {
        //创建express实例
        const app = express();
        // view engine setup
        app.set('views', path.join(__dirname, 'views'));
        app.set('view engine', 'ejs');

        app.use(logger('dev'));
        app.use(bodyParser.json());
        app.use(bodyParser.urlencoded({ extended: false }));
        app.use(cookieParser());
        app.use(express.static(path.join(__dirname, 'public')));
        // var upload = multer({ dest: path.join(__dirname, './uploads') });
        //设置文件上传中间件
        var storage = multer.diskStorage({
            destination: function (req, file, cb) {
                cb(null, path.join(__dirname, './uploads'))
            },
            filename: function (req, file, cb) {
                var date = new Date();
                cb(null, moment().format('YYYY-MM-DD') + '_' + file.originalname);
            }
        });
        var upload = multer({ storage: storage });
        app.use(upload.any());
        //使用moleculer-web作为中间件
        app.use('/', this.express());
        // catch 404 and forward to error handler
        app.use(function (req, res, next) {
            next(createError(404));
        });

        // error handler
        app.use(function (err, req, res, next) {
            // set locals, only providing error in development
            res.locals.message = err.message;
            res.locals.error = req.app.get('env') === 'development' ? err : {};
            // render the error page
            res.status(err.status || 500);
            res.render('error');
        });
        this.app = app;
    },
    started() {
        //express监听端口
        this.app.listen(this.settings.port, err => {
            if (err) {
                return this.broker.fatal(err);
            }
            console.log('server started');
        })
    },
    stopped() {
        //服务停止是关闭express
        if (this.app.listening) {
            this.app.close(err => {
                if (err) {
                    console.log(err);
                }
                console.log('server stopped');
            })
        }
    }
};