任何人都知道为什么“重命名”功能(以及所有其他的multer回调)都不起作用?
var express = require('express');
var multer = require('multer');
var app = express();
app.use(multer({
dest: 'uploads/',
rename: function (fieldname, filename) {
return new Date().getTime();
},
onFileUploadStart: function (file) {
console.log(file.name + ' is starting ...');
},
onFileUploadComplete: function (file, req, res) {
console.log(file.name + ' uploading is ended ...');
console.log("File name : "+ file.name +"\n"+ "FilePath: "+ file.path)
},
onError: function (error, next) {
console.log("File uploading error: => "+error)
next(error)
},
onFileSizeLimit: function (file) {
console.log('Failed: ', file.originalname +" in path: "+file.path)
fs.unlink(path.join(__dirname, '../tmpUploads/') + file.path) // delete the partially written file
}
}).array('photos', 12));
app.listen(8080,function(){
console.log("Working on port 8080");
});
app.get('/',function(req,res){
res.sendFile(__dirname + "/index.html");
});
app.post('/photos/upload', function (req, res, next) {
// req.files is array of `photos` files
// req.body will contain the text fields, if there were any
//console.log(req.files);
//console.log(req.body);
res.json(req.files)
});
答案 0 :(得分:8)
似乎用法随着时间的推移而改变。目前,multer
构造函数仅接受以下选项(https://www.npmjs.com/package/multer#multer-opts):
dest
或storage
- 存储文件的位置fileFilter
- 控制接受哪些文件的功能limits
- 上传数据的限制因此,例如,通过配置适当的存储(https://www.npmjs.com/package/multer#storage)来解决重命名问题。
var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, '/tmp/my-uploads'); // Absolute path. Folder must exist, will not be created for you.
},
filename: function (req, file, cb) {
cb(null, file.fieldname + '-' + Date.now());
}
})
var upload = multer({ storage: storage });
app.post('/profile', upload.single('fieldname'), function (req, res, next) {
// req.body contains the text fields
});
fieldname
必须与请求正文中的字段名称匹配。也就是说,在HTML表单发布的情况下,表单上传元素输入名称。
另请参阅其他中间件功能,例如array
和fields
- https://www.npmjs.com/package/multer#single-fieldname,它们提供了一些不同的功能。
您也可能对限制(https://www.npmjs.com/package/multer#limits)和文件过滤器(https://www.npmjs.com/package/multer#filefilter)感兴趣
而且 - 来源是真相的唯一来源 - 偷看!(https://github.com/expressjs/multer/blob/master/index.js)
答案 1 :(得分:0)
这是Windows问题。 Windows中不允许将日期作为ISOString用作文件名,并且它违反了一些CORS策略。因此,有一个名为uuid的节点包可以完成这项工作。