仅使用 Sails Js 读取上传的文件

Question

我想上传一个文件作为缓冲区，使用 utf-8 编码解析为字符串减去该字符串的一部分，仅此而已。

我不想将它保存在磁盘上，因为它目前使用船长航行。

Answer 1

我相信您可以通过上传到临时文件然后从那里读取来做到这一点。例如

// Since we don't provide any other 'opts' arguments to the upload
// method, it will upload our file to a temp directory
skipperFile.upload(function (err, uploadedFiles) {
// If no files were uploaded, respond with an error.
    if (uploadedFiles.length === 0) {
      return res.badRequest('No file was uploaded');
    }
    // Now that the file is uploaded, get the file descriptor
    var fd = uploadedFiles[0].fd;
    fs.readFile(fd, 'utf8', function (err, data) {
        // Print the contents of the file as a string here
        // and do whatever other string processing you want
        console.log(data);
    });
});

Answer 2

我知道已经晚了，但我还是想把这些方法分享给其他人：

您可以使用 sails-hook-uploads 中的 .reservoir() 方法来实现。

示例：

const info = await sails.reservoir(uploadedFile, {encoding:'utf8'});

info 应该是：

[
  {
    contentBytes: 'data contents...',
    name: 'filename.txt',
    type: 'text/plain'
  }
]

仅使用 Sails Js 读取上传的文件

Only read a uploaded file with Sails Js

node.js

sails.js