node js connect to db2

Use node. js + socket. io + redis to implement basic chat room scenarios This article introduces the basic operations of Redis and Redis-cli in the redis database and its basic operations. among them, the publish-subscribe mechanism is widely used, so we will use nodejs to implement this mechanism. this article describes how to use socket in the previous article. io + redis to supplement basic chat room app

here, which indicates that the module can be installed like the Socket.io module by installing Express.In the code, when the root directory is accessed, the string Welcome to socket demo is returned, and node listens on port 3000.Io.on ('connection', function (socket) { Socket.on ('message ', function (obj) { io.emit ('message', obj); });});The above code can be understood as, when the server receives a name of connection access, liste

/mousycoder.log; Location/{ proxy_set_header Host $http _host; Proxy_set_header x-nginx-proxy true; Proxy_set_header x-real-ip $remote _addr; Proxy_pass http://127.0.0.1:2368; # This is the default port when Ghost starts, can be changed according to the actual situation, the default can also #proxy_buffering off; Proxy_redirect off; }}Then restart the service$ ln-s/etc/nginx/sites-available/mousycoder/etc/nginx/sites-enabled/mousycoder # establish

1. Start the MongoDB databaseDownload MongoDB database on official websiteCreate a folder under the MongoDB root directory: Assume that it is named Test.We think test is a new database for MongoDB.Create a batch file Xxx.bat with the following contents:Run the Mongod.exe under the Bin directory under the E-Disk MongoDB folder, with the parameters-dbpath E:\mongodb\test.E:\mongodb\bin\mongod.exe -dbpath E:\mongodb\testThis launches the server for MongoDB under the test database.2. Loading the Mon

records agree to the client of different pages of the user}); After successful logon, the notification page is logged on. // When the user logs on successfully, the system pushes the message to the client prompting that the user logs on successfully.Socket. on ('Do _ login', function (jsonData) {// capture the data sent by the client named 'do _ login'. If the business needs to, you can extend the callback parameter.Var jsSockets = users [jsonData. userKey];If (jsSockets ){Console. log ('number

Node. js advanced core module. net introduction and instance description module Overview The net module is also the core module of nodejs. As mentioned in the overview of the http module, http. Server inherits net. Server. In addition, communication between the http client and the http Server is dependent on socket (net. Socket ). That is to say, for node Server

Node. js framework StrongLoop Study Notes (1)Node. js framework StrongLoop Study Notes (1) I am using node. js is used as the mobile phone background, and the search framework finds that StrongLoop is quite suitable, but it find

Tags: log data div cmd cal enc mod slash dependLast lesson learned how to use node. js to connect to a database, and this lesson we learned how to insert data. 1, using node. js to connect MongoDB data successfully, want to write

register a mailboxStrongloop will send you a confirmation letter to fill in the mailbox, through the inside of the connection to complete the registration; then log in with your registered email and password to the Strongloop page management interface, click ComposerIn the lower left corner select the type of database you want to connect to, I am here MySQL; and configure a name for the database connection, as I call MySQL here; then fill in the foll

In the development of node. JS environment, debugging is a very painful thing, but with the development of the times, there are now many kinds of node environment code debugging methods, today I will note the way I useNode-inspector:Node-inspector interacts with users via web pages, a browser based on the WebKit kernel, such as chrome, Safari, or Maxthon (roaming

Tags: pen mod gif Lex ase log connection database sites websitesConnect to the database through the node. JS language and indicate the location of the database connection through the Express framework.I. How to do the node. JS Connection Database under Express frameworkWrite Setting.js and connet.js in the same directo

This node. js operation on the postgresql database is implemented using two files. One file is equivalent to a client that connects to the database and calls corresponding functions. This node. js operation on the postgresql database is implemented using two files. One file is equivalent to a client that connects to th

mongoose = require ('mongoose ');VaR conn = mongoose. Connect ('mongodb: // localhost/test ');VaR DB = mongoose. connection;DB. On ('error', console. Error. BIND (console, 'Connection error :'));DB. Once ('open', function callback (ERR ){If (! Err) {console. Log ('opened ');}});VaR schema = mongoose. Schema;VaR person = new schema ({ID: Number, Name: {type: string}});VaR result = mongoose. Model ('users', person );VaR personcollection = mongoose. Mod

Why use node to write crawlers? It is because the cheerio library is fully compatible with jQuery syntax. If you are familiar with it, it is really cool to use cheerio: Node. jQueryhttp for js: encapsulates an HTPP server and a simple HTTP client iconv-lite: solution... why use node to write crawlers? Because the cheer

\node_modules\mongodb\node_ Modules\bson> (Node-gyp rebuild 2> builderror.log) | | (Exit 0) C:\mysite\node_modules\mongodb\node_modules\bson>node "c:\nodejs\node_modules\npm\bin\ node-gyp-bin\\. \.. \node_modules\ode-gyp\bin\node-gyp.js " rebuild[email protected] Node_modules\mongodb├──[email protected] └──[email prote

// Collection.findone ({name: Name}, function (err, user) {mongodb.close (); if (err) {return callback (ERR); // failed! Returns the Err information callback (null, user); // success! Returns the user information for the query }); }); });}; Through the User.prototype.save realizes the user information storage, through the User.get realizes the user information reading.At the front of Index.js, add the following code: var crypto = require (' crypto '), User = require (' ... /models/user.js ');

Build the serverTo run the Cesium program, we need a local server to host our files, and then we're going to use node. js to complete our tutorial (I'm using IIS myself). If you already have one, then you use it, no matter, just remember that the host is the one we created above the root on the line.Building node. js i

It took two weeks to learn about Node. js. I mainly studied Node. js Development Guide and implemented the examples in the book. The examples in this book are based on node. js v0.6.12 and Express v2.5.8, and I learned about

node. js before you connect to the database, you need to install the appropriate packages if you need to install SQL Server Node-sqlserver first. We use MySQL as a case to illustrate node. js querying MySQL data.1, installation

The basic operations of Redis and REDIS-CLI are described in this article in the Redis database and its basic operations. The publish-subscribe mechanism is widely used, then the NODEJS is used to implement the mechanism. This article is a detailed supplement to the basic chat room scenario using Socket.io+redis for a previous article.For more information about Redis, refer to the Redis database and its basic operations.The prerequisite for Redis is that Redis-server is always running, and the d