Javascript 未使用多方定义的文件
我想使用node.js上传img,我使用的是express和multiparty,我的代码如下 html 当我上传东西时,它会抛出错误 无法读取未定义的属性图像 作为后端新手,我不知道为什么会发生这种情况,目录img存在于html和js所在的文件夹中。将enctype添加到表单:Javascript 未使用多方定义的文件,javascript,node.js,express,Javascript,Node.js,Express,我想使用node.js上传img,我使用的是express和multiparty,我的代码如下 html 当我上传东西时,它会抛出错误 无法读取未定义的属性图像 作为后端新手,我不知道为什么会发生这种情况,目录img存在于html和js所在的文件夹中。将enctype添加到表单: <form method="post" action="/img" enctype="multipart/form-data"> PS:对于上传图像,我建议您使用,类似的。您可以使用multer上传
<form method="post" action="/img" enctype="multipart/form-data">
PS:对于上传图像,我建议您使用,类似的。您可以使用multer上传文件,请参阅下面的代码,前端:
<html>
<head>
<title>FileUpload</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
</head>
<body>
<form id = "uploadForm"
enctype = "multipart/form-data"
action = "http://localhost:3000/api/photo"
method = "post"
>
<input type="file" name="userPhoto" multiple />
<input type="submit" value="Upload Image" name="submit" id="btnUpload">
<span id="spnStatus" />
</form>
<script>
$(document).ready(function(){
$('#btnUpload').click(function(){
$('#spnStatus').empty().text("File is Uploading");
$(this).ajaxSubmit({
error : function(xhr){
status('Error : '+xhr.status);
}
success : function(response){
$('#spnStatus').empty().text(xhr);
}
});
});
});
</script>
</body>
</html>
如果需要,您可以同时上载多个文件,例如将userPhoto增加到5var upload=multer({storage:storage}).array('userPhoto',5)代码>
<form method="post" action="/img" enctype="multipart/form-data">
<html>
<head>
<title>FileUpload</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
</head>
<body>
<form id = "uploadForm"
enctype = "multipart/form-data"
action = "http://localhost:3000/api/photo"
method = "post"
>
<input type="file" name="userPhoto" multiple />
<input type="submit" value="Upload Image" name="submit" id="btnUpload">
<span id="spnStatus" />
</form>
<script>
$(document).ready(function(){
$('#btnUpload').click(function(){
$('#spnStatus').empty().text("File is Uploading");
$(this).ajaxSubmit({
error : function(xhr){
status('Error : '+xhr.status);
}
success : function(response){
$('#spnStatus').empty().text(xhr);
}
});
});
});
</script>
</body>
</html>
var express = require("express");
var multer = require("multer");
var bodyParser = require("body-parser");
var app = express();
app.use(bodyParser.json());
var storage = multer.diskStorage({
destination: function (req, file, callback) {
callback(null, './uploads');
},
filename: function (req, file, callback) {
callback(null, file.fieldname + '-' + Date.now());
}
});
var upload = multer({ storage : storage }).array('userPhoto',1);
app.get('/',function(req,res){
res.sendFile(__dirname + "/fileUpload.html");
});
app.post('/api/photo',function(req,res){
upload(req,res,function(err) {
if(err) {
return res.end("Error uploading file.");
}
res.end("File is uploaded");
});
});
app.listen(3000,function(){
console.log("Working on port 3000");
});