Question

如何在不使用express / view引擎的情况下将行（docs）输出为html表格式。我尝试编写无法正常工作的res.write（${documents}）。请检查以下代码。

const http = require('http');
const MongoClient = require('mongodb').MongoClient;

const hostname = '127.0.0.1';
const port = 3000;
const url = 'mongodb://localhost:27017';
const client = new MongoClient(url, { useNewUrlParser: true });
var documents;
client.connect(err => {
  const collection = client.db("mydb").collection("messages");
  collection.find({}).toArray(function(err, docs) {
    console.log("Found the following records");
    console.log(docs); // How can write this docs as html table
    documents = docs; // Is there any workaround for this?
  });
  client.close();
});

const server = http.createServer((req,res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.write(`Server running at http://${hostname}:${port}/. Records:${documents}`); //this document not appearing
  res.end();
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

Answer 1

您的代码的一个问题是标题

res.setHeader('Content-Type', 'text/plain');

您需要设置内容类型text/html

如果要将JSON映射到HTML，请尝试

let myObj
txt += "<table border='1'>"
for (x in myObj) { txt += "<tr><td>" + myObj[x].name + "</td></tr>"; } 
txt += "</table>" 
document = txt;

Answer 2

对于您的评论

//如何将该文档写为html表

您是否尝试过使用console.table（）而不是console.log（）？

如何从mongodb读取并在nodejs中输出？

2 个答案: