Expressjs

在我的前端项目http://localhost:63342/replay.moqi.mobi/index.html 中访问expressjs的项目http://localhost:3000/blogs会出现跨域请求的问题，如下： XMLHttpRequest cannot load http://localhost:3000/blogs. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:63342' is therefore not allowed access. 关于CORS，<pro express.js>书中38页介绍如下： If you’re building an application (a REST API server) that serves requests coming from front-end clients hosted on different domains, you might encounter cross-domain limitations when making XHR/AJAX calls. In other words, browser requests are limited

介绍 Nodejs因其简单方便，在服务端应用市场也开始占有一席之地，其另外一个分支--socket.io（最后跟nodejs好像又要合并了），特别适合聊天室、白板（document collabration）、在线实时计算、计数器等应用，如果要支持大容量应用，就需要使用集群技术了，下面逐一讨论常见的socket.io集群方案。 集群方案 在官网介绍的方案有使用ngix反向代理方案。这种方案比较简单不需要修改业务代码可以直接布署，通过iphash轮调算法保存用户分配到同一个进程。 vi /etc/nginx/conf/nginx.conf http { upstream io_nodes { ip_hash; server 127.0.0.1:6001; server 127.0.0.1:6002; server 127.0.0.1:6003; server 127.0.0.1:6004; } server { listen 3000; server_name io.yourhost.com; location / { #为支持转发WebSocket数据，加上upgrade头 proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade"; proxy_set_header X

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How can I access raw body of request object given to me by expressjs? var express = require('./node_modules/express'); var app = express.createServer(); app.post('/', function(req, res) { console.log(req.body); //says 'undefined' }); app.listen(80); 回答1: Default express does not buffer data unless you add middleware to do so. The simple solution is to follow the example in @Stewe's answer below, which would just concatenate all of the data yourself. e.g. var concat = require('concat-stream'); app.use(function(req, res, next){ req.pipe(concat

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an API that can be called either using a browser where requests are transactional and have a session OR directly, eg. using curl, where requests are atomic. Browser requests must first authenticate and then use an express session (connect.sid) for subsequent authorization, direct API calls use a header: Authorization: "SOMETOKEN" which has to be sent for every request. The problem I have is, because I'm using the same web server to serve both atomic and transactional traffic, every API call is needlessly being given a session by

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm doing a little OJT on my first node project and, while I can stand up a simple server, the app is going to get hammered so using cluster seems like a good idea. I've cobbled together some code snippets that I've found in various searches (including SO), but the server won't start. I'm sure my inexperience with node has me doing something stupid, but I don't see it. var express = require( 'express' ); var cluster = require( 'cluster' ); var path = require( 'path' ); var cCPUs = require( 'os' ).cpus().length; var port = 3000; var root =

上一篇中，咱们说到使用Node.js express搭建简单的网站（“不就是Hello World！么”，只要你够蛋疼，返回整个html文件的字符串，什么网站你也能做）,以及ejs模板的使用。 这一篇本来是想直接讲三层搭建的，后来一想，不如先讲讲Cookie和Session的使用，然后配合MVC做一个完整的例子，要不光看页面跳来跳去的也没意思。 Cookie 网站开发肯定会用到Cookie的对吧，可以将信息保存在客户端的好东西。那么在express中如何获取和设置呢？ 直接上例子，跟着代码，看着注释走一遍就明白了 Cookie的读写和设置 var express = require('http://www.cnblogs.com/') , app = module.exports = express(); //设置网站favicon.icon，放在这里是为了不让这种请求记录在日志中 app.use(express.favicon()); //这个logger是个middleware，格式化console中请求日志的 if ('test' != process.env.NODE_ENV) app.use(express.logger(':method :url')); //这个cookieParser是express提供的一个分析Cookie信息，并将信息保存在req

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using expressjs and multer to handle upload of files on my nodejs server. I am often getting this error in production logs : Error: Request aborted at onaborted (/home/drp/server/node_modules/express/lib/response.js:951:15) at Array.onfinish [as 0] (/home/drp/server/node_modules/express/lib/response.js:987:50) at listener (/home/drp/server/node_modules/express/node_modules/on-finished/index.js:164:15) at onFinish (/home/drp/server/node_modules/express/node_modules/on-finished/index.js:95:5) at callback (/home/drp/server/node_modules