mysql使用
安裝mysql 模塊:
在安裝根目錄 cmd命令行執行命令
npm install mysql
安裝成功后、
mysql數據庫表 已存在的情況下。
在nodejs根目錄 新建mysql.js:
var sys = require('util'); var mysql=require('mysql'); console.log('正在連接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 服務器已經開始工作...<br/>"); response.write("已經連接上MySQL....<br/>"); } clientReady(client); }); }; clientReady = function(client) { var values = ['不錯啊']; 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("關閉MySQL連接..."); 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/"); 運行 node mysql.js 。
瀏覽器 訪問 http://localhost:8033 即可看到效果。
配置oracle支持
在oracle網站下載oracle數據庫客戶端連接包
instantclient-basic-linux，instantclient-sdk-linux
解壓oracle客戶端連接模塊
$ 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
配置環境變量
$ export OCI_INCLUDE_DIR=/opt/instantclient/sdk/include/ $ export OCI_LIB_DIR=/opt/instantclient
進入nodejs目錄 安裝oracle模塊支持
$ cd /usr/local/lib $ npm install oracle export LD_LIBRARY_PATH=/opt/instantclient
編寫oracle.js文件 測試連接于執行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 方法必須要三個參數 不然會出錯 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(); }); }); node oracle.js
