在我的Node / Express应用程序中,我有以下代码,它假设从文件中读取PDF文档,并将其发送到浏览器:
var file = fs.createReadStream('./public/modules/datacollectors/output.pdf','binary'); var stat = fs.statSync('./public/modules/datacollectors/output.pdf'); res.setHeader('Content-Length',stat.size); res.setHeader('Content-Type','application/pdf'); res.setHeader('Content-disposition','attachment; filename=quote.pdf'); res.pipe(file,'binary'); res.end();
解决方法
您必须从可读流管道传输到可写流,而不是相反:
var file = fs.createReadStream('./public/modules/datacollectors/output.pdf'); var stat = fs.statSync('./public/modules/datacollectors/output.pdf'); res.setHeader('Content-Length','attachment; filename=quote.pdf'); file.pipe(res);
此外,您正在以错误的方式设置编码,如果需要,传递带编码的对象.