jstl - I/O 사용시

/WEB-INF/spring/appServlet/servlet-context.xml 에 해당 코드 추가

<beans:bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <beans:property name="defaultEncoding" value="utf-8" />
    <beans:property name="maxUploadSize" value="3145728" /> //2메가까지 받음 
    <beans:property name="maxInMemorySize" value="2097152" />
</beans:bean>