Cara mengkonfigurasi pangkalan data MySQL atau Oracle untuk program Node.js di bawah Linux

Cara mengkonfigurasi pangkalan data MySQL atau Oracle untuk program Node.js di bawah Linux_node.js

WBOY

Lepaskan： 2016-05-16 15:10:06

asal

2156 orang telah melayarinya

penggunaan mysql
Pasang modul mysql:
Jalankan arahan pada baris arahan cmd dalam direktori akar pemasangan

npm install mysql

Salin selepas log masuk

Selepas pemasangan berjaya,
Apabila jadual pangkalan data mysql sudah wujud.
Cipta mysql.js baharu dalam direktori akar nodejs:

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/");

Salin selepas log masuk

Jalankan node mysql.js .
Lawati http://localhost:8033 dengan pelayar anda untuk melihat kesannya.

Konfigurasikan sokongan oracle
Muat turun pakej sambungan pelanggan pangkalan data oracle dari tapak web oracle
instantclient-basic-linux, instantclient-sdk-linux
Nyahzip modul sambungan klien oracle

$ 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

Salin selepas log masuk

Konfigurasikan pembolehubah persekitaran

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

Salin selepas log masuk

Masukkan direktori nodejs dan pasang sokongan modul oracle

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

Salin selepas log masuk

Tulis fail oracle.js untuk menguji sama ada sambungan dan pelaksanaan sql adalah 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(); 
 }); 
});

Salin selepas log masuk

Perintah jalankan terminal