Question

我正在尝试将Mysql DB与节点js连接，但出现以下错误。

    Error: Connection lost: The server closed the connection.
    at Protocol.end (node_modules\mysql\lib\protocol\Protocol.js:112:13)
    at Socket.<anonymous> (\node_modules\mysql\lib\Connection.js:94:28)
    at Socket.<anonymous> (\node_modules\mysql\lib\Connection.js:526:10)
    at Socket.emit (events.js:322:22)
    at endReadableNT (_stream_readable.js:1187:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

我创建了一个单独的文件来配置数据库。下面显示了db.js

    var mysql = require('mysql');
    var pool = mysql.createPool({
            host: 'localhost',
            user: 'root',
            password: 'root',
            database: 'tms',
            connectionLimit: 10,
            multipleStatements: true,
            port: 5000,
            connectionLimit: 1000,
            connectTimeout: 60 * 60 * 1000,
            acquireTimeout: 60 * 60 * 1000,
            timeout: 60 * 60 * 1000
        });
    exports.connection = {
        query: function () {
            var queryArgs = Array.prototype.slice.call(arguments),
            events = [],
            eventNameIndex = {};
            pool.getConnection(function (err, conn) {
                if (err) {
                    if (eventNameIndex.error) {
                        eventNameIndex.error(err);
                    }
                }
                if (conn) {
                    var q = conn.query.apply(conn, queryArgs);
                    q.on('end', function () {
                        conn.release();
                    });
                    events.forEach(function (args) {
                        q.on.apply(q, args);
                    });
                }
            });
            return {
                on: function (eventName, callback) {
                    events.push(Array.prototype.slice.call(arguments));
                    eventNameIndex[eventName] = callback;
                    return this;
                }
            };
        }
    };

我正在尝试从这样的路由查询数据。

    const express = require('express');
    const Database = require('../../database/db.js');
    const sql = require('../../database/sql.js');
    const router = express.Router();
    const config = {};
    const bcrypt = require('bcrypt');
    //var database = new Database;
    router.post('/', (req, res) => {
        let someRows;
        let procedure = sql.registerUser;
        let hashPwd = bcrypt.hashSync(req.body.userReg.pwd, 10);
        let requestArgs = [];
        requestArgs[0] = req.body.userReg.firstName;
        requestArgs[1] = req.body.userReg.lastName;
        requestArgs[2] = req.body.userReg.email;
        requestArgs[3] = hashPwd;
        requestArgs[4] = req.body.userReg.userId;
        //debugger;
        console.log("b4 connt");
        Database.connection.query(procedure, requestArgs)
        .on('result', function (row) {
            //setData(row);
            console.log("in resltt");
            res.send(row)
        })
        .on('error', function (err) {
            console.log("in err ::  " + err);
            res.send(err);
            //callback({error: true, err: err});
        });
    });
    module.exports = router;

我正在尝试学习数据库连接，这是我的第一次尝试。我试图找到一种解决方案，但并非所有人都能得到。请帮助...预先感谢。

节点js的MySQL数据库连接问题

0 个答案: