FIle Upload

servlet-context.xml

form

<form id="writeform" method="post" enctype="multipart/form-data" action="">
	<input type="file" name="upfile" multiple="multiple">

1. input type="file"

2. file upload를 위해서는 반드시 POST 방식 사용

3. enctype 설정 반드시 필요