javascript - 使用 hapi 从 NodeJS 服务器下载文件

Question

我想使用 hapi 创建一个文件下载 API。 不使用res.download()，如何使用reply()呢？

Answer 1

您还可以从流中下载文件

const { Readable } = require('stream');

handler: async (request: any, h: Hapi.ResponseToolkit) => {
  let stream = Fs.createReadStream(filePath);
  let streamData = new Readable().wrap(stream);
  return h.response(streamData)
    .header('Content-Type', contentType)
    .header('Content-Disposition', 'attachment; filename= ' + fileName);
}

要获取文件的内容类型，您可以引用:

getContentType(fileExt) {
        let contentType;
        switch (fileExt) {
            case 'pdf':
                contentType = 'application/pdf';
                break;
            case 'ppt':
                contentType = 'application/vnd.ms-powerpoint';
                break;
            case 'pptx':
                contentType = 'application/vnd.openxmlformats-officedocument.preplyentationml.preplyentation';
                break;
            case 'xls':
                contentType = 'application/vnd.ms-excel';
                break;
            case 'xlsx':
                contentType = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
                break;
            case 'doc':
                contentType = 'application/msword';
                break;
            case 'docx':
                contentType = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
                break;
            case 'csv':
                contentType = 'application/octet-stream';
                break;
            case 'xml':
                contentType = 'application/xml';
                break;
        }
        return contentType;
    }