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Linux下为Node.js程序配置MySQL或Oracle数据库的方法_node.js

程序员文章站 2022-03-08 10:42:09
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mysql使用
安装mysql 模块:
在安装根目录 cmd命令行执行命令
npm install mysql

安装成功后、
mysql数据库表 已存在的情况下。
在nodejs根目录 新建mysql.js:

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(""); 
   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...
"); response.write("已经连接上MySQL....
"); } 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"; } response.write(data); response.write("关闭MySQL连接..."); response.write(""); 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/");

运行 node mysql.js 。
浏览器 访问 http://localhost:8033 即可看到效果。

配置oracle支持
在oracle网站下载oracle数据库客户端连接包
instantclient-basic-linux,instantclient-sdk-linux
解压oracle客户端连接模块

$ 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 

配置环境变量

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

进入nodejs目录 安装oracle模块支持

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

编写oracle.js文件 测试连接于执行sql是否正常
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 
终端运行命令
 node oracle.js