Node.js请求MySQL数据库输出表里的内容

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Node.js请求MySQL数据库输出表里的内容
var express = require("express"); var mysql = require('mysql'); var app = express(); var pool = mysql.createPool({ connectionLimit : 100, //important host : 'localhost', user : 'root', password : '', database : 'vue', debug : false }); function handle_database(req,res) { pool.getConnection(function(err,connection){ if (err) { res.json({"code" : 100, "status" : "Error in connection database"}); return; } console.log('connected as id ' + connection.threadId); connection.query("select * from tab1",function(err,rows){ connection.release(); if(!err) { res.json(rows); } }); connection.on('error', function(err) { res.json({"code" : 100, "status" : "Error in connection database"}); return; }); }); } app.get("/",function(req,res){- handle_database(req,res); }); app.listen(3000);