nodejs 連接MySQL後，輸出數據帶有RowDataPacket、中括號大括號怎麽去掉？
阿新 • • 發佈：2018-11-22
connect 沒有 temp 去掉 我們 highlight src exp png
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();
運行結果如下：
如果單純是查詢結果那這樣顯示也是沒有問題的，但是如果我們是想把數據傳送出去或者對應讀取出數據就 不太好操作了
我們進行如下更改代碼：
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();
運行結果：
用例二：查詢特定帳號的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 連接MySQL後，輸出數據帶有RowDataPacket、中括號大括號怎麽去掉？