Node.js - 用 Multer 上傳檔案

在開發網頁的過程中，不可避免的會遇到使用者要上傳圖片、檔案，在nodejs中我會使用multer這個library去做處理

Official Website: https://github.com/expressjs/multer

Init

var multer = require('multer');
storage = multer.diskStorage({
    destination: function(req, file, cb) {
        cb(null, './upload')
    },
    filename: function(req, file, cb) {
        cb(null, Date.now() + ".pdf")
    }
})
var upload = multer({ storage: storage }).single('BP_file');

use

upload(req, res, function(err) {
	...
}

注意

• multer不支援使用HTTP:PUT
• form method, enctype
• ajax send FormData

form#post_form(method="post" ,enctype="multipart/form-data",action="#{result._id}")

script(type='text/javascript').
		$(document).ready(function(){

			$('#post_btn').click(function(){
			console.log("click");
				$('#post_form').submit(function() {
			console.log("submit");

			    var formData = new FormData($(this)[0]);
			        alert(formData);

			    $.post($(this).attr("action"), formData, function(data) {
			        alert(data);
			    });

			    return false;
			});