MySQL-Nutzung
MySQL-Modul installieren:
Führen Sie den Befehl in der cmd-Befehlszeile im Installationsstammverzeichnis
aus
npm install mysql
Nach erfolgreicher Installation,
Wenn die MySQL-Datenbanktabelle bereits vorhanden ist.
Erstellen Sie eine neue mysql.js im Stammverzeichnis von 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/");
Führen Sie node mysql.js aus.
Besuchen Sie http://localhost:8033 mit Ihrem Browser, um den Effekt zu sehen.
Oracle-Unterstützung konfigurieren
Laden Sie das Oracle-Datenbank-Client-Verbindungspaket von der Oracle-Website herunter
Instantclient-Basic-Linux, InstantClient-SDK-Linux
Entpacken Sie das Oracle-Client-Verbindungsmodul
$ 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
Umgebungsvariablen konfigurieren
$ export OCI_INCLUDE_DIR=/opt/instantclient/sdk/include/ $ export OCI_LIB_DIR=/opt/instantclient
Geben Sie das Verzeichnis nodejs ein und installieren Sie die Oracle-Modulunterstützung
$ cd /usr/local/lib $ npm install oracle export LD_LIBRARY_PATH=/opt/instantclient
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(); }); });
node oracle.js