错误：在Express Js中连接ECONNREFUSED 127.0.0.1：8000(尝试使用Postman进行测试时)

jslywgbw 于 2022-11-07 发布在 Postman

关注(0)|答案(1)|浏览(377)

我真的是一个新的行业和有这个错误时，试图检查数据库连接通过API的请求与 Postman .....请帮助我解决这个问题...

我只是想通过发送API请求来检查mongodb数据库。但我仍然无法识别错误，我正在遵循一套教程，并发生了这个问题...任何人都可以帮助我识别错误，这是非常感谢....
{这是虚拟文本，请添加更多详细信息...
这是我的代码...

const app = express();
const { MongoClient } = require('mongodb');
const PORT = process.env.PORT || 8000;

// Initialize middleware
// we used to install body parser but now it's a built in middleware
// Function of express. It parses incoming JSONpayload
// app.use(express.json({extended:false}));
app.use(express.json({ extended: false }));

// Test Routs
// app.get("/", (req,res)=>res.send("Hello Aruna !!!"));
// app.post("/", (req,res)=>res.send(`Hello ${req.body.name} `));
// app.get("/hello/:name", (req.res)=>res.send(`Hello ${req.params.name}`))

app.get('/api/articles/:name', async (req, res) => {
  try {
    const articleName = req.params.name;
    const client = await MongoClient.connect('mongodb://localhost:27017');
    const db = client.db('mernblog');
    const articlesinfo = db
      .collection('articles')
      .findOne({ name: articleName });
    res.status(200).jason(articlesinfo);
    client.close();
  } catch (error) {
    res.status(500).jason({ message: 'Error connecting to database', error });
  }
});
app.post('/api/articles/:name/add-comments', (req, res) => {
  const { username, text } = req.body;
  const articleName = req.params.name;
  articlesinfo[articleName].comments.push({ username, text });
  res.status(200).send(articlesinfo[articleName]);
});

app.post('/', (req, res) => res.send(`Hello ${req.body.name}`));
app.get('/hello/:name', (req, res) => res.send(`Hello ${req.params.name}`));

app.listen(PORT, () => console.log(`Server is running at port ${PORT}`));

Server.js Terminal Error and API request in Postman

postman

来源：https://stackoverflow.com/questions/73146521/error-connect-econnrefused-127-0-0-18000-in-express-js-when-try-to-test-with

1条答案

按热度按时间

olmpazwi1#

您的代码中有一个打字错误：jason应该是json。
其他提示，你应该在一个单独的方法中处理你的DB连接，并更改你的post请求，因为articlesinfo不是一个全局变量：

const app = express();
const { MongoClient } = require('mongodb');
const PORT = process.env.PORT || 8000;

const client = new MongoClient('mongodb://localhost:27017');

const connectDB = async () => {
    try {
        await client.connect();
        console.log('Successfully connected to DB')
    } catch (err) {
        await client.close();
        console.log('Error connecting to DB');
        process.exit(1);
    }
}

// Initialize middleware
// we used to install body parser but now it's a built in middleware
// Function of express. It parses incoming JSONpayload
// app.use(express.json({extended:false}));
app.use(express.json({ extended: false }));

// Test Routs
// app.get("/", (req,res)=>res.send("Hello Aruna !!!"));
// app.post("/", (req,res)=>res.send(`Hello ${req.body.name} `));
// app.get("/hello/:name", (req.res)=>res.send(`Hello ${req.params.name}`))

app.get('/api/articles/:name', async (req, res) => {
  try {
    const articleName = req.params.name;
    const db = client.db('mernblog');
    const articlesinfo = db
      .collection('articles')
      .findOne({ name: articleName });
    res.status(200).json(articlesinfo);
    client.close();
  } catch (error) {
    res.status(500).json({ message: 'Error connecting to database', error });
  }
});

app.post('/api/articles/:name/add-comments', (req, res) => {
  const { username, text } = req.body;
  const articleName = req.params.name;
  const db = client.db('mernblog');
  const articlesinfo = db
    .collection('articles')
    .updateOne({ name: articleName }, { $push: { comments: { username, text } } });
  res.status(200).send(articlesinfo);
});

app.post('/', (req, res) => res.send(`Hello ${req.body.name}`));
app.get('/hello/:name', (req, res) => res.send(`Hello ${req.params.name}`));

connectDB();

app.listen(PORT, () => console.log(`Server is running at port ${PORT}`));

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错误：在Express Js中连接ECONNREFUSED 127.0.0.1：8000(尝试使用Postman进行测试时)

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