Nodejs实现的操作MongoDB数据库功能完整示例

/**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 testvar 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();  });});

node mongodb_demo.js