這篇文章與大家分享優秀的 Node.js 中間件模塊。Node 是一個服務器端 JavaScript 解釋器，它將改變服務器應該如何工作的概念。它的目標是幫助程序員構建高度可伸縮的應用程序，編寫能夠處理數萬條同時連接到一個（只有一個）物理機的連接代碼。

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JSGI

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• commonlogger?- A logger of HTTP requests.
• compact?- Join and compress frontend javascript.
• compress?- Gzip compresses (using node-compress) the response when appropriate based on request headers.
• conditional?- Handles conditional HTTP requests (If-Modified-Since, etc.)
• contentlength?- Sets Content-Length header.
• csrf?- Checks HTTP request for possible cross-site request forgery, flags dangerous requests.
• extension?- Transforms .extension to a RESTful Accept header
• head?- Handles HEAD requests (stripping body).
• http-params?- Converts HTTP parameters http- to headers.
• media?- Performs content type negotiation (per RFC2616) delegating to appropriate media handler.
• redirect?- Redirects to other URLs
• rewriter?- Rewrites defined paths to other paths.
• routes?- Simple RegExp based router
• session?- Session manager with pluggable storage handling
• static?- Static file handler using asynchronous streaming.
• transporter?- Share modules with browser, works RequireJS and Yabble
• urlmap?- Maps to different apps by path/URL
• xsite?- Handles JSONP, window.name, and cross-origin XHR (CORS).

Connect

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• connect-jade-static?- Serving jade files as static html
• aspa-express?- Simple, dependency-free middleware for serving assets packaged with?aspa.
• browserify-middleware?- Middleware for serving up node.js code with requires to the client.
• bundle-up?— A simple asset manager middleware for managing css and js files.
• client-certificate-auth?- Basic TLS/SSL client certificate authentication
• connect_facebook?- Facebook session support for Connect
• connect_json?- Support for parsing JSON requests and sending JSON responses in Connect
• connect-airbrake?— Airbrake error reporting auto-setup middleware
• connect-assetmanager?- Asset manager for Connect for handling CSS/JS files
• connect-assets?- Compiled CSS/JS asset pipeline inspired by Rails 3.1
• connect-auth?— Connect authentication middleware, provides out-of-the-box implementations of HTTP (Basic & Digest), Twitter, Facebook, BitBucket, Janrain, Yahoo, Sina, Google, OAuth (1.0 server), Github and a couple of others....
• connect-compiler?— Development middleware to dynamically recompile derived files at serve-time.
• connect-dojo?— Connect middleware exposing the Dojo Toolkit
• connect-domain?— Asynchronous error handler for Connect
• connect-force-domain?— force all visitors onto a single domain
• connect-gridfs?— GridFS file server for Connect
• connect-http-signature?— middleware wrapper for Joyent's?HTTP Signature reference implementation
• connect-proxy?— Retrieve originating ip/host values when proxying to your connect app
• connect-roles?— Dynamic roles based authorization for connect/express, designed to work well with passport and everyauth.
• connect-rpx?- Use RPX with Node.js and Connect
• cookie-sessions?— Secure cookie-based session store
• dispatch?— Regular expression URL dispatcher
• everyauth?— Connect authentication and authorization middleware, modular, configurable, supporting password, OpenId, Google, OAuth, Twitter, LinkedIn, Yahoo, Readability, Dropbox, Justin.tv, Vimeo, Tumblr, OAuth2, Facebook, GitHub, Instagram, Foursquare, Box.net, LDAP
• express-chromeframe?— Dead simple middleware to enable chromeframe on connect/express applications.
• express-errors?— Simple error handling
• facebook-wrapper?— Basic wrapper to the Facebook API, designed to work with Connect and Express
• form2json?— Decoder for form-urlencoded data that supports arrays of nested objects
• formaline?- full-featured module for handling form POSTs/PUTs (multipart/form-data, application/x-www-form-urlencoded ) and fast parsing of file uploads, it speaks JSON and it is also ready for use with middlewares like connect.
• http-accept?— Connect compatible middleware that parses HTTP Accept header fields
• merge-js?— Simple connect middleware for merging multiple js files and uglifying the result.
• mincer?— direct Sprockets assets manager port, with middleware for connect/express
• minj?— Serve minified javascript files with Connect/Express
• monomi?— Provides tools for handling tablet, touch, and mobile browsers
• node_signedcookies?— Extends Express's cookieParser() to read/write signed cookies.
• node-facebook-session-cookie?— eats facebook cookies from client FB.login() and makes the session available as req.fb_session
• passport?— Simple, modular, and unobtrusive authentication framework for Connect and Express.
• pound?— Pound is an high-level interface for Piler - The Awesome Asset Manager for Node.js
• quip?— Chainable HTTP response API
• resource-router?— A resource-oriented router to replace the default routing in express
• resty?— Quickly and simply build REST APIs with this connect middleware
• session-web-sockets?— Pass session to (Socket.IO-node) in a secure manner. Originally forked from?bmeck/session-web-sockets
• session.js?— super simple session middleware for node.js, even has optional "magic" sessions which monkey patch the httpServer with one line!
• Shrinkroute?- Named routes for Express. Helps you in achieving DRY routes!
• trust-reverse-proxy?- Trust (SSL) connections coming from (a) specific reverse prox(y)(ies)

Other middleware

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• bouncy?— bounce HTTP requests around for load balancing or as an HTTP host router
• buffet?— Performance-oriented static file server & middleware
• dota2api?— Dota2 api wrapper written in node.js
• eventpipe?— Provides an Event Pipe with the?same?API as node.js' EventEmitter
• exedra?— Express routes & functions loader
• express-debug?— Express middleware that provides a debugging/object browser panel injected into your application.
• express-couch-proxy?— CouchDB reverse proxy middleware for Express
• express-twitter?— Twitter-specific OAuth support
• googleclientlogin?— Log in to Google services using CllientLogin method
• http-auth?— Node.js package for HTTP basic and digest access authentication.
  • htdigest?— Node.js package for HTTP Digest Authentication password file utility.
  • htpasswd?— Node.js package for HTTP Basic Authentication password file utility.
• http-auth2?— HTTP basic authentication that supports multiple logins.
• http-proxy-selective?— Proxy server replace some remote static files with local ones
• middler?— A middleware runner which can itself function as middleware, with routing
• node-evented?— Extended EventEmitter
• node-file-cache?- Very small file cache for node.js http server.
• node-force-domain?— Force multiple domains to redirect (301) to a default one in your Express project.
• Node-Http-Rewrite-Proxy?— This module proxies and rewrites HTTP requests of all types. For this you can, if you want, use regular expressions.
• node-reverse-proxy?— A reverse proxy which forwards incoming HTTP requests to multiple back-end HTTP servers based upon HTTP Host header.
• node-varnish?— Connector for the Varnish cache telnet management protocol
• notp?— NodeJS One Time Password authentication, compatible with Google Authenticator
• onion?— Simple and flexible middleware stack that enables you to add a middleware layer to just about anything
• protobuf_for_node?— In-process JS-to-C++ communication using?protocol buffer?services
  • protobuf?— A fork of protobuf_for_node with an npm package.
• proxy-tamper?— A proxy server that allows for the tampering of requests and responses.
• socket-logger?— JSON-parsable logs for Socket.IO that can push log messages to a client over Socket.IO.
• subproxy?- subdomain proxy (for example to proxy?www.google.com?with?www.google.com.localhost)
• proxima?- HTTP/TLS(HTTPS) reverse proxy forwards incoming requests to upstream servers based on Host header or SNI host hint.
• express-cors?- Simple middleware for adding CORS functionality to your expressjs app.