标签：ret cal nec create 更改 result 连接 ESS bubuko
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘root‘,
password : ‘123456‘,
port: ‘3306‘,
database: ‘reji‘
});
connection.connect();
var sql = ‘SELECT * FROM user‘;
//查
connection.query(sql,function (err, result) {
if(err){
console.log(‘[SELECT ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------SELECT----------------------------‘);
console.log(result);
console.log(‘------------------------------------------------------------\n\n‘);
});
connection.end();
运行结果如下：
如果单纯是查询结果那这样显示也是没有问题的，但是如果我们是想把数据传送出去或者对应读取出数据就 不太好操作了
我们进行如下更改代码：
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘root‘,
password : ‘123456‘,
port: ‘3306‘,
database: ‘reji‘
});
connection.connect();
var sql = ‘SELECT * FROM user‘;
//查
connection.query(sql,function (err, result) {
if(err){
console.log(‘[SELECT ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------SELECT----------------------------‘);
console.log(‘account:‘result[0].account);//更改位置
console.log(‘------------------------------------------------------------\n\n‘);
});
connection.end();
运行结果：
用例二：查询特定帐号的name值
‘use strict‘;
var app = require(‘express‘)();
var express = require("express");
var server = require(‘http‘).Server(app);
var io = require(‘socket.io‘)(server);
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘root‘,
password : ‘123456‘,
port: ‘3306‘,
database: ‘reji‘
});
connection.connect();
//var name=‘select name form user where account=1870096555‘;
var name = "select name from user where account=‘"+1870096555+"‘";
connection.query(name,function (err, results) {
if(err){
console.log(‘[SELECT ERROR] - ‘,err.message);
return;
}
//results = JSON.stringify(results);
//var temp=new String(results[0].name);
console.log(‘--------------------------SELECT----------------------------‘);
console.log(‘name:‘,results[0].name);
console.log(‘------------------------------------------------------------\n\n‘);
});
//console.log(name);
connection.end();
nodejs 连接MySQL后，输出数据带有RowDataPacket、中括号大括号怎么去掉？
标签：ret cal nec create 更改 result 连接 ESS bubuko
原文地址：https://www.cnblogs.com/wuyepeng/p/10002487.html
