选择一个文件，然后使用Nodemailer将其作为附件发送！的NodeJS

Question

如何使用输入类型文件附加我选择的文件？

<form action="/upload" method="POST" enctype="multipart/form-data" >
      <div class="file-field input-field">
        <div class="btn grey">
          <span>File</span>
          <input name="myImage" type="file" multiple="multiple"> 
        </div>
        <div class="file-path-wrapper">
          <input class="file-path validate" type="text">
        </div>

      </div>      
      <button type="submit" class="btn">Submit</button>
    </form>

这是后端代码

var mailOptions = {
    from: '****@gmail.com',
    to: '*****@gmail.com',
    subject: 'test',
    text: 'test',
    attachments: [{        
         // how to get the path of the selected file
    }]
  };

我怎样才能获得包含在附件中的路径？

Answer 1

附件params是文件路径，因此我认为您必须先将上传的文件写入磁盘，然后再将其附加到邮件中。您可以使用nodejs fs模块来执行此操作。

const fs = require('fs').promises
...
fs.writeFile('/your/path/to/your/fs', fileContent)
    .then(res => {
        const mailOptions = {
            from: '****@gmail.com',
            to: '*****@gmail.com',
            subject: 'test',
            text: 'test',
            attachments: ['/path/to/your/fs']
        };

        // I suppose sendMail return a Promise here !
        return sendMail(mailOptions)
    }).then(_ => fs.unlink('path/to/your/fs'))
    // fs.unlink is here to delete the file because it is useless now

Answer 2

使用此代码从请求对象中提取文件数组，然后将此文件数组作为附件传递给nodemailer

    var files = req.files;
    const mailOptions = {
            from: '****@gmail.com',
            to: '*****@gmail.com',
            subject: 'test',
            text: 'test',
            attachments: files
        };