如何在mongodb中创建将输入保存为html的Mongoose模式

const mongoose = require('mongoose');

const htmlSchema = new mongoose.Schema({
  htmlContent: {
    type: String,
    required: true
  }
});

const HtmlModel = mongoose.model('Html', htmlSchema);

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Error connecting to MongoDB', error);
  });

app.post('/save-html', (req, res) => {
  const { htmlContent } = req.body;

  const htmlDocument = new HtmlModel({ htmlContent });

  htmlDocument.save()
    .then(() => {
      console.log('HTML saved successfully');
      res.status(200).send('HTML saved successfully');
    })
    .catch((error) => {
      console.error('Error saving HTML', error);
      res.status(500).send('Error saving HTML');
    });
});