使用multer上传多个文件，但来自不同的领域? [英] Uploading multiple files with multer, but from different fields?

问题描述

我如何让multer接受来自多个文件类型字段的文件?

How can I have multer accept files from multiple file type fields?

我有以下代码，使用node.js中的multer上传单个文件:

I have the following code that uploads a single file, using multer in node.js:

var storage =   multer.diskStorage({
  destination: function (req, file, callback) {
    callback(null, './public/uploads');
  },
  filename: function (req, file, callback) {
    callback(null, file.fieldname + '-' + Date.now());
  }
});

var upload = multer({ storage : storage });

app.post('/rest/upload', upload.array('video', 1), function(req, res, next){
    ...
}

从下面的表格中，仅在视频字段具有值的情况下(如果我同时指定这两个字段，则会出现意外字段"错误):

From the following form, on the condition only the video field has a value (if I specify both I get an 'Unexpected field' error):

<form action="/rest/upload" method="post" enctype="multipart/form-data">
   <label>Video file: </label> <input type="file" name="video"/> 
   <label>Subtitles file: </label> <input type="file" name="subtitles"/> 
   <input type="submit"/>
</form>

从文档中不清楚该如何处理?任何建议，将不胜感激.顺便说一句，我尝试了以下参数变体，但没有成功:

It is not clear from the documentation how to approach this? Any suggestions would be appreciated. BTW I have tried the following parameter variations, without success:

app.post('/rest/upload', [upload.array('video', 1), upload.array('subtitles', 1)] ...
app.post('/rest/upload', upload.array('video', 1), upload.array('subtitles', 1), ...
app.post('/rest/upload', upload.array(['video', 'subtitles'], 1),  ...

推荐答案

您想要的是 upload.fields() :

What you want is upload.fields():

app.post('/rest/upload',
         upload.fields([{
           name: 'video', maxCount: 1
         }, {
           name: 'subtitles', maxCount: 1
         }]), function(req, res, next){
  // ...
}

这篇关于使用multer上传多个文件，但来自不同的领域?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！