Node.js、multer 和 req.body 为空 [英] Node.js, multer and req.body empty
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问题描述
这是我的问题，我有一个表单，我可以在其中插入一个文件和一个字段，但我只收到文件而不是参数 test！为什么?
Here it is my problem, I have a form where I can insert a file and a field but I receive only the file and not the parameter test! Why?
这是我的代码:
app.js:
var express = require('express');
var bodyParser = require('body-parser');
var app = express();
var port = 8000;
var multer = require('multer'); // v1.0.5
var storage = multer.diskStorage({
destination: function (req, file, callback) {
callback(null, './uploads');
},
filename: function (req, file, callback) {
callback(null, file.originalname.substring(0,file.originalname.lastIndexOf('.')) + '-' + Date.now() + file.originalname.substring(file.originalname.lastIndexOf('.'),file.originalname.length));
}
});
var upload = multer({ storage : storage}).single('fileUpload');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.post('/api/upload',function(req,res){
console.log(req.body);
upload(req,res,function(err) {
if(err) {
return res.end("Error uploading file.");
}
res.end("File is uploaded");
});
});
app.listen(port, function () {
console.log('Express server inizializzato sulla porta ' + port);
});
index.html:
index.html:
<html>
<head>
<title>Test upload</title>
</head>
<body>
<form name="form" action="http://localhost:8000/api/upload" method="post" enctype="multipart/form-data">
<input type="text" name="test" />
<input type="file" name="fileUpload" />
<input type="submit" value="invia" />
</form>
</body>
</html>
有人可以帮助我吗?
推荐答案
2017年更新
请注意，req.body 可能尚未完全填充.这取决于客户端向服务器传输字段和文件的顺序.
Note that req.body might not have been fully populated yet. It depends on the order that the client transmits fields and files to the server.
我通过在前端颠倒表单对象属性的顺序解决了我的问题:
I resolved my issue by reversing the order of my form object properties in the front end:
var newFormObj = new FormData();
newFormObj.append('internalUserID', internalUserID);
newFormObj.append('listingImage', this.binaryImages[image]);
<小时>
在后端:
On the backend:
var storage = multer.diskStorage({
destination: function (req, file, cb) {
console.log(req.body.internalUserID) // YAY, IT'S POPULATED
cb(null, 'listing-pics/')
},
filename: function (req, file, cb) {
cb(null, file.fieldname + '-' + Date.now())
}
});
var upload = multer({ storage: storage });
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