//mongodb_demo.js
/**
cnpm install mongodb
*/
var MongoClient = require('mongodb').MongoClient;
var DB_CONN_STR = 'mongodb://test:123456@127.0.0.1:27017/test'; // 数据库为 test
var insertData = function (db, callback) {
//连接到表 site
var collection = db.collection('site');
//插入数据
var data = [{ "name": "网站1", "url": "www.test1.com" }, { "name": "网站2", "url": "www.test2.com" }];
collection.insert(data, function (err, result) {
if (err) {
console.log('Error:' + err);
return;
}
callback(result);
});
}
var selectData = function (db, callback) {
//连接到表
var collection = db.collection('site');
//查询数据
var whereStr = { "name": '网站1' };
collection.find(whereStr).toArray(function (err, result) {
if (err) {
console.log('Error:' + err);
return;
}
callback(result);
});
}
var updateData = function (db, callback) {
//连接到表
var collection = db.collection('site');
//更新数据
var whereStr = { "name": '网站1' };
var updateStr = { $set: { "url": "https://www.test1.com" } };
collection.update(whereStr, updateStr, function (err, result) {
if (err) {
console.log('Error:' + err);
return;
}
callback(result);
});
}
var delData = function (db, callback) {
//连接到表
var collection = db.collection('site');
//删除数据
var whereStr = { "name": '网站1' };
collection.remove(whereStr, function (err, result) {
if (err) {
console.log('Error:' + err);
return;
}
callback(result);
});
}
MongoClient.connect(DB_CONN_STR, function (err, db) {
if (err) {
console.log(err);
return;
}
console.log("连接成功！");
//1、插入
insertData(db, function (result) {
console.log(result);
db.close();
});
//2、查询数据
selectData(db, function (result) {
console.log(result);
db.close();
});
//3、更新数据
updateData(db, function (result) {
console.log(result);
db.close();
});
//4、删除数据
delData(db, function (result) {
console.log(result);
db.close();
});
});
运行：node mongodb_demo.js