騰訊雲資料庫怎麼登陸

『壹』 js如何連接和操作騰訊雲mysql資料庫

首先是登陸騰訊雲，登陸之後可以領取新手禮包，如圖

1.在實例上上新建一個為nodejs的資料庫，然後新建一個為employee的表，新建四個欄位 name sex age email除了年齡為int其它的全部為varchar格式
2.新建一個TimLiu的文件夾,打開cmd，cd TimLiu, 初始化項目npm init ,按照它的提示一步一步的操作即可，安裝mysql模塊，npm insitall mysql, 這個模塊的作用主要是連接mysql資料庫。
3.新建一個model.js 文件，

• var mysql = require(『mysql』);


• var connection = mysql.createConnection({


• host:'',


• user:'root',


• password:'123abc',


• database:' nodejs',


• port:6445


• })


• connection.connect();



這里的host為我們在騰訊雲上開通的外地址，埠號也是在外網地址裡面，注意要把外網地址寫分開，用戶為默認的管理員用戶，密碼為我們在雲平台上設置的密碼，資料庫為我們創建的nodejs資料庫。
接下來我們對資料庫進行增刪改查操作

• /**


• * 增加員工


• */function addEmployee(){


• var employeeInsertSql = 'INSERT INTO employee(name,sex,age,email) VALUES(?,?,?,?)';


• var employeeInsertSql_Params = ['Tim','男',22,'[email protected]']


• connection.query(employeeInsertSql,employeeInsertSql_Params,function(err,result){


• if(err) console.log('[INSERT ERR]-',err.message);


• console.log(result);


• }) }addEmployee()


• }


• /**


• * 更新員工


• */


• function insertEmployee(){


• var employeeUpdateSql = "UPDATE employee SET name = ? WHERE age =?";


• var employeeUpdateSql_Params = ['Peter',22];


• connection.query(employeeUpdateSql,employeeUpdateSql_Params,function(err,result){


• if(err) console.log('[UPDATE ERR]-',err.message);


• console.log(result);


• })}




• insertEmployee();


• /**


• *查詢員工


• */ function getEmployee(){


• var employeeGetSql = "SELECT * FROM employee";


• connection.query(employeeGetSql,function(err,result){


• if(err) console.log('[SELECT ERR]-',err.message);


• console.log(result);


• })}



getEmployee();

• /**


• *刪除員工


• */ function deleteEmployee(){


• var employeeDeleteSql = "DELETE employee WHERE name = ?";


• var employeeDeleteSql_Params = 'Peter';


• connection.query(employeeDeleteSql,employeeDeleteSql_Params,function(err,result){


• if(err) console.log('[DELETE ERR]-',err.message);


• console.log(result);


• })


• }deleteEmployee();



這樣我們就可以愉快的操作資料庫了

如果大家想把項目更模塊化操作，可在model下面新建一個employee_two.js,代碼如下

• var mysql = require('mysql');var connection = mysql.createConnection({


• host:'',


• user:'root',


• password:'',


• database:'nodejs',


• port:})connection.connect();/**


• * 增加員工


• * @param {String} employee


• * @param {Function} callback


• */exports.addEmployee=function(employee,callback){


• var employeeInsertSql = 'INSERT INTO employee(name,sex,age,email) VALUES(?,?,?,?)';


• var employeeInsertSql_Params = [employee.name,employee.sex,employee.age,employee.email]


• connection.query(employeeInsertSql,employeeInsertSql_Params,callback)}/**


• * 更新員工


• * @param {String} employee


• * @param {Function} callback


• */exports.updateEmployee = function(name,age){


• var employeeUpdateSql = "UPDATE employee SET name = ? WHERE age =?";


• var employeeUpdateSql_Params = ['Peter',22];


• connection.query(employeeUpdateSql,employeeUpdateSql_Params,function(err,result){


• if(err) console.log('[UPDATE ERR]-',err.message);


• console.log(result);


• })}/**


• * 查詢員工


• *


• */exports.getEmployee = function(){


• var employeeGetSql = "SELECT * FROM employee";


• connection.query(employeeGetSql,callback)}/**


• * 刪除員工


• * @param {String} name


• */exports.deleteEmployee = function(name){


• var employeeDeleteSql = "DELETE employee WHERE name = ?";


• var employeeDeleteSql_Params = 'Peter';


• connection.query(employeeDeleteSql,employeeDeleteSql_Params,callback)


• }再在根目錄下新建index.js,代碼如下var db = require('./model/employee_two');//增加員工var employee = {


• name:'lisa',


• age:22,


• sex:"女",


• email:'99533212@qq.com'}db.addEmployee(employee,function(err,result){


• if(err) console.log("[INSERT err]-",err.message)


• console.log(result);})//刪除員工db.deleteEmployee('Peter',function(err,result){


• if(err) console.log("[DELETE err]-",err.message)


• console.log(result);})//更新員工db.updateEmployee('Tim',23,function(err,result){


• if(err) console.log("[UPDATE err]-",err.message)


• console.log(result);})//查詢員工db.getEmployee(function(err,result){


• if(err) console.log("[GET err]-",err.message)


• console.log(result);})