利用mongoose創建數據庫，基本操作
// 引入mongoose第三方模塊 用來操作數據庫 const mongoose = require('mongoose'); // 數據庫連接 mongoose.connect('mongodb://localhost:27017/playground', { useNewUrlParser: true}) // 連接成功 .then(() => console.log('數據庫連接成功')) // 連接失敗 .catch(err => console.log(err, '數據庫連接失敗'));C // 創建集合規則 const courseSchema = new mongoose.Schema({ name: String, author: String, isPublished: Boolean }); // 使用規則創建集合 // 1.集合名稱 // 2.集合規則 const Course = mongoose.model('Course', courseSchema) // courses // 創建文檔 const course = new Course({ name: 'node.js基礎', author: 'marco', isPublished: true }); // 向集合中插入文檔 Course.create({name: 'Javascript', author: 'maoco', isPublished: false}, (err, result) => { console.log(err) console.log(result) }) // 將文檔插入到數據庫中 course.save();
2. mongoDB數據庫導入數據
mongoimport –d 數據庫名稱 –c 集合名稱 –file 要導入的數據文件
找到mongodb數據庫的安裝目錄，將安裝目錄下的bin目錄放置在環境變量中
找到mongoimport的安裝目錄
添加到系統環境變量
找到要導入數據的目錄， user.json， 然后在改目錄下打開命令終端，輸入命令；mongoimport -d playground -c users -file ./user.json ， 即可將數據導入數據庫playground中的users集合中
user.json數據
{"_id":{"$oid":"5c09f1e5aeb04b22f8460965"},"name":"張三","age":20,"hobbies":["足球","籃球","橄欖球"],"email":"zhangsan@itcast.cn","password":"123456"}
{"_id":{"$oid":"5c09f236aeb04b22f8460967"},"name":"李四","age":10,"hobbies":["足球","籃球"],"email":"lisi@itcast.cn","password":"654321"}
{"_id":{"$oid":"5c09f267aeb04b22f8460968"},"name":"王五","age":25,"hobbies":["敲代碼"],"email":"wangwu@itcast.cn","password":"123456"}
{"_id":{"$oid":"5c09f294aeb04b22f8460969"},"name":"趙六","age":50,"hobbies":["吃飯","睡覺","打豆豆"],"email":"zhaoliu@itcast.cn","password":"123456"}
{"_id":{"$oid":"5c09f2b6aeb04b22f846096a"},"name":"王二麻子","age":32,"hobbies":["吃飯"],"email":"wangermazi@itcast.cn","password":"123456"}
{"_id":{"$oid":"5c09f2d9aeb04b22f846096b"},"name":"狗蛋","age":14,"hobbies":["打豆豆"],"email":"goudan@163.com","password":"123456"}
輸入命令
打開可視化數據庫工具compass，可看到數據已成功導入
