node 带mongodb

标签：username   cal   lis   dbn   any   请求   const   ring   chunk   

let http = require(‘http‘);

// 引入url模块 获取域名后面的url
let path = require(‘path‘);
let fs = require(‘fs‘);
let url = require(‘url‘);
let ejs = require(‘ejs‘);
let querystring = require(‘querystring‘);

let routes = require(‘./js/routes‘);

const MongoClient = require(‘mongodb‘).MongoClient;

// Connection URL
const mongodbUrl = ‘mongodb://localhost:27017‘;

// Database Name
const dbName = ‘test‘;

// 创建http服务
// request 获取客户端传过来的信息，response 给浏览器响应的信息
http.createServer((request, response) => {
  let queryUrl = url.parse(request.url).pathname === ‘/‘ ? ‘index‘ : url.parse(request.url).pathname.replace(‘/‘, ‘‘);
  let pageData;

  routes.static(request, response);


  try {
    routes.route[queryUrl](request, response, pageData);
  } catch (e) {
    routes.route[‘error‘](request, response, pageData);
  }

  // 获取get请求数据
  let getData = url.parse(request.url, true);
  // console.log(getData[‘query‘]);
  // 路由
  if(queryUrl === ‘doPost‘) {
    //获取 POST 传值
    let postData = ‘‘;
    // 数据块接收中
    request.on(‘data‘, function (postDataChunk) {
      postData += postDataChunk;
    });

    // 数据接收完毕，执行回调函数
    request.on(‘end‘, function () {
      try {
        postData = JSON.parse(postData);
      } catch (e) {
      }
      request.query = querystring.parse(postData);
      console.log(request.query);
      // Use connect method to connect to the server
      MongoClient.connect(mongodbUrl,{ useUnifiedTopology: true }, function(err, client) {
        // assert.equal(null, err);
        if (err) { console.log(err); return}
        console.log(‘数据库连接成功‘);

        const db = client.db(dbName);

        const collection = db.collection(‘admin‘);

        // 添加数据
        collection.insertMany([
          {‘name‘: request.query[‘username‘], ‘age‘: request.query[‘password‘]},
        ], function(err, result) {
          if (err) { console.log(err); return}
          // assert.equal(err, null);
          // assert.equal(3, result.result.n);
          // assert.equal(3, result.ops.length);
          client.close();
          console.log(‘添加成功‘);
        });

        // 删除数据
        // collection.deleteOne({ ‘name‘ : ‘qqq‘ }, function(err, result) {
        //         if (err) { console.log(err); return}
        //         // assert.equal(err, null);
        //         // assert.equal(1, result.result.n);
        //         // client.close();
        //         console.log(‘删除成功‘);
        // });

        // 修改更新数据
        // collection.updateOne(
        //   { ‘name‘ : ‘www‘ },
        //   { $set: { ‘name‘ : ‘111‘ } },
        //   (err, result) => {
        //     if (err) { console.log(err); return}
        //     // assert.equal(err, null);
        //     // assert.equal(1, result.result.n);
        //     console.log(‘更新成功‘);
        //     client.close();
        //   });

        // 查看数据
        collection.find({}).toArray(function(err, docs) {
          if (err) { console.log(err); return}
          // assert.equal(err, null);
          response.end(docs);
          pageData = docs;
          console.log(docs);
          client.close();
        });
      });

    });
  }





  try {
    routes.route[queryUrl](request, response, pageData);
  } catch (e) {
    routes.route[‘error‘](request, response, pageData);
  }
}).listen(3000);



console.log(‘httpServer http://127.0.0.1:3000‘);

node 带mongodb

标签：username   cal   lis   dbn   any   请求   const   ring   chunk   

原文地址：https://www.cnblogs.com/zhaofeis/p/14618623.html