Question

嘿，我在这里制作api是源代码

//Initiallising node modules
var express = require("express");
var bodyParser = require("body-parser");
var sql = require("mssql");
var app = express(); 

// Body Parser Middleware
app.use(bodyParser.json()); 

//CORS Middleware
app.use(function (req, res, next) {
    //Enabling CORS 
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, contentType,Content-Type, Accept, Authorization");
    next();
});

//Setting up server
 var server = app.listen(process.env.PORT || 8080, function () {
    var port = server.address().port;
    console.log("App now running on port", port);
 });

//Initiallising connection string
var dbConfig = {
    user: 'sa',
    password: '*****',
    server: '94.200.123.222,1433',
    database: 'CUBES_HO',


};

//Function to connect to database and execute query
var  executeQuery = function(res, query){             
     sql.connect(dbConfig, function (err) {
         if (err) {   
                     console.log("Error while connecting database :- " + err);
                     res.send(err);
                  }
                  else {
                         // create Request object
                         var request = new sql.Request();
                         // query to the database
                         request.query(query, function (err, res) {
                           if (err) {
                                      console.log("Error while querying database :- " + err);
                                      res.send(err);
                                      sql.close();
                                     }
                                     else {
                                       res.send(res);
                                            }
                                            sql.close();
                               });
                       }
      });           
}

//GET API
app.get("/api/user", function(req , res){
                var query = "select * from [osama] where bill_hdr_key = '31'";
                executeQuery (res, query);
});

问题是，当我执行此操作时，它会给我错误无法在94.200.123.222,1433上查找实例 - getaddrinfo ENOTFOUND 94.200.123.222,1433＆＃34;，服务器已启动并正在运行，可通过SSMS进行访问。亲切地帮助我

Answer 1

尊重您的代码，我试图通过以下代码解决您的问题，您犯的错误很少，所以我在这里纠正了它。

const express = require("express");
const bodyParser = require("body-parser");
const sql = require("mssql");
const app = express();
const port = 3131;

// Body Parser Middleware
app.use(bodyParser.json());

//CORS Middleware
app.use(function (req, res, next) {
    //Enabling CORS 
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, contentType,Content-Type, Accept, Authorization");
    next();
});


//Initiallising connection string
var dbConfig = {
    user: 'sa',
    password: "******",
    server: '94.200.123.222',
    database: 'CUBES_HO',
};

function executeQuery(query) {
    return new Promise((resolve, reject) => {
        sql.connect(dbConfig, function (err) {
            if (err) {
                reject(err);
                sql.close();
            } else {
                // create Request object
                var request = new sql.Request();
                // query to the database and get the records
                request.query(query, function (err, data) {
                    if (err) {
                        reject(err);
                        sql.close();
                    } else {
                        resolve(data);
                        sql.close();
                    }
                });
            }
        });
    });
}

//GET API
app.get("/", function (req, res) {
    var query = "select * from [osama] where bill_hdr_key = '31'";
    executeQuery(query)
        .then((data) => {
            res.status(200).send({ "msg": "Records fetched", "data": data.recordsets });
        }).catch((err) => {
            res.status(500).json({ "msg": err.message });
        });
});

//Setting up server
var server = app.listen(port || 8080, function () {
    var port = server.address().port;
    console.log("App now running on port", port);
});

希望，它可能有助于解决您的错误。

NODE JS MS Sql Dosnt没有连接到msql ip

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