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02_create_db.js
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02_create_db.js
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/**
{
"date_of_creation": "17 Sepember 2017",
"aim_of_source": 'Creating database(mysql) using node.js',
"coded_by": 'Rishikesh Agrawani',
"output_img_link": "0004mysql02createdb2017-09-17at4.41.57PM.png"
}
*/
//Including http module
var http = require("http")
//Including mysql module(mysql node.js driver)
var mysql = require("mysql")
//Setting port
var port = 8080
//HTML text to display on the browser
var htmlText = "<center>"+
"<h1 style='color:green'> Connection established and created new database(if it was not there)</h1>"+
"<a href='https://nodejs.org/en/'>Click here</a> to download"+
"</center>"
//HTML erro text to display on the browser
var htmlErrorText = "<center>"+
"<h1 style='color:red'> Error while accessing db</h1>"+
"<a href='https://nodejs.org/en/'>Click here</a> to download"+
"</center>"
//Printing simple log message
console.log("Starting Node server")
//Creating server
server = http.createServer(
function(request, response){
//Creating connection object
var connection = mysql.createConnection({
host: "localhost",
"user": "rishikesh", //db username
"password": "rishikesh@321" //db password
})
//Creating and testing database connection
connection.connect(function(err){
if(err){
//Error
response.writeHead(500, {"Content-Type":"text/html"})
console.log("Error while creating connection")
response.end(htmlErrorText)
} else {
//Successful
response.writeHead(200, {"Content-Type":"text/html"})
console.log("Connection successful")
console.log("Now creating database")
//Creating database
connection.query("CREATE DATABASE IF NOT EXISTS nodejs", function(err){
if(err){
//Error
response.writeHead(500, {"Content-Type":"text/html"})
console.log("Error while creating database")
response.end(htmlErrorText)
} else {
//Successful
response.writeHead(200, {"Content-Type":"text/html"})
console.log("Database creation successful(if it was not there) otherwise it got skipped")
response.end(htmlText)
}
})
response.end(htmlText)
}
})
}
)
//Our http server should listen on port 8080
server.listen(port)
//Printing log messages
console.log("Server started which is listening on port 8080")
console.log("Visit at http://127.0.0.1:"+port)