How to configure MySQL or Oracle database for Node.js program under Linux

How to configure MySQL or Oracle database for Node.js program under Linux_node.js

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Release： 2016-05-16 15:10:06

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mysql usage
Install mysql module:
Execute the command on the cmd command line in the installation root directory

npm install mysql

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After successful installation,
When the mysql database table already exists.
Create a new mysql.js in the nodejs root directory:

var sys = require('util'); 
var mysql=require('mysql'); 
console.log('正在连接MySQL...'); 
var http = require("http"); 
var server=http.createServer(function(request, response) { 
  response.writeHead(200, {"Content-Type": "text/html;charset:utf-8"});  
  response.write("<!doctype html><html><meta charset='utf-8'/>"); 
   var client = mysql.createConnection({'host':'localhost','port':3306,'user':'testmysql','password':'123456'}); 
  clientConnectionReady = function(client) 
  { 
    client.query('use test', function(error, results) { 
      if(error) { 
        console.log('ClientConnectionReady Error: ' + error.message); 
        client.end(); 
        return; 
      }else{ 
        response.write("nodejs 服务器已经开始工作...<br/>"); 
        response.write("已经连接上MySQL....<br/>"); 
    } 
      clientReady(client); 
    }); 
  }; 
    
  clientReady = function(client) { 
    var values = ['不错啊']; 
    client.query('insert into nodemysql set names = :1', values, 
      function(error, results) { 
        if(error) { 
          console.log("ClientReady Error: " + error.message); 
          client.end(); 
          return; 
        } 
        console.log('Inserted: ' + results.affectedRows + ' row.'); 
        console.log('Id inserted: ' + results.insertId); 
      } 
    ); 
    getData(client); 
  } 
    
  getData = function(client) { 
    client.query( 
      'select * from nodemysql', 
      function selectCb(error, results, fields) { 
        if (error) { 
          console.log('GetData Error: ' + error.message); 
          client.end(); 
          return; 
        } 
     var data = ''; 
      for(var i=0; i<results.length; i++){ 
      var firstResult = results[i]; 
         data += 'id: ' + firstResult['id']+'  name: ' + firstResult['names']+"<br/>"; 
      } 
       
       response.write(data);  
       response.write("关闭MySQL连接..."); 
       response.write("</html>"); 
      response.end(); 
      } 
    ); 
    client.end(); 
     
  }; 
    
  clientConnectionReady(client); 
}); 
server.listen(8033,"127.0.0.1"); 
 
var sys = require("util"); 
sys.puts("Server running at http://localhost:8033/");

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Run node mysql.js .
Visit http://localhost:8033 with your browser to see the effect.

Configure oracle support
Download the oracle database client connection package from the oracle website
instantclient-basic-linux, instantclient-sdk-linux
Unzip the oracle client connection module

$ unzip instantclient-basic-linux-11.2.0.3.0.zip 
$ unzip instantclient-sdk-linux-11.2.0.3.0.zip  
$ sudo mv instantclient_11_2/ /opt/instantclient 
 
$ cd /opt/instantclient 
$ sudo ln -s libocci.so.11.1 libocci.so 
$ sudo ln -s libclntsh.so.11.1 libclntsh.so

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Configure environment variables

$ export OCI_INCLUDE_DIR=/opt/instantclient/sdk/include/ 
$ export OCI_LIB_DIR=/opt/instantclient

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Enter the nodejs directory and install oracle module support

$ cd /usr/local/lib 
 
$ npm install oracle 
 
export LD_LIBRARY_PATH=/opt/instantclient

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Write the oracle.js file to test whether the connection and execution of sql are normal

var oracle = require("oracle"); 
 
oracle.connect({ "hostname": "localhost", "user": "demo", "password": "demo", "database": "orcl", "port": 1521}, function(err, connection) { 
 if(err) { 
  console.log(err); 
 } 
 // selecting rows 注意 connection.execute 方法必须要三个参数 不然会出错 
 connection.execute("SELECT * FROM TEST WHERE ID = :1", ['1'], function(err1, results) { 
  // results will be an array of objects 
  console.log("query start"); 
  if(err1) { 
    console.log(err1); 
  } 
  // console.log(results.length); 
  for(var i = 0; i < results.length; i++) { 
   console.log(results[i].ID); 
  } 
  connection.close(); 
 }); 
});

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Terminal run command