Question

我使用busboy body解析器解析多部分表单数据。因此，我要在req.body中获取名称，用户名键值以及req.files中的文件之类的字段。但是Iam无法使用multer将文件上传到目录中。

app.use(busboyBodyParser());
app.post('/createUser', (req, res) => {

  console.log(req.body);
  console.log(req.files);
   const storage = multer.diskStorage({
     destination: './public/uploads/',
     filename: function (req, file, cb) {
       cb(null, file.fieldname + '-' + Date.now() + 
         path.extname(file.originalname));
     }
   });
   const upload = multer({
      storage: storage
   }).single(req.files['uploadpic']);
   upload(req, res, (err) => {
   });

});

Answer 1

您无需将busboy与multer一起使用，因为它是基于upload.single('fieldName') //is the syntax for single file构建的。

您的文件未保存，因为您的文件采用数组形式，但是您尝试使用错误的语法将其作为单个文件读取。

//removing busbodyparser

//declaring multer configs 

const storage = multer.diskStorage({
  destination: './public/uploads/',
  filename: function (req, file, cb) {
    cb(null, file.fieldname + '-' + Date.now() + 
      path.extname(file.originalname));
  }
});

const upload = multer({
   storage: storage
}).array('uploadpic', 8]

//make sure you define maxCount - here 8 is given as an example
//array will take in a number of files with the same 'uploadpic' field name

app.post('/createUser', (req, res) => {

    upload(req, res, function(err) {
        if (err) {
            //show error
        }

        //your files are saved and req.body and req.files are populated using multer

        console.log(req.files);
        console.log(req.body);
    });
});

您的代码将被这样重写：

<!DOCTYPE html>
<html lang="en">

<head>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
  </script>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>plz work</title>
</head>

<body>
  <img style="max-width:100%" src="//cdn.thinglink.me/api/image/1093320091384152066/1024/10/scaletowidth#tl-1093320091384152066;'" class="alwaysThinglink" />
  <script async charset="utf-8" src="//cdn.thinglink.me/jse/embed.js"></script>
</body>

</html>

使用带有杂色机的busboy body解析器在nodejs中上传文件

1 个答案: