스프링 레거시 - 파일업로드 위한 세팅

pom.xml

		<!-- 2020.04.01 파일업로드 -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.3</version>
		</dependency>

		<!-- 2020.04.01 파일업로드 -->
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.5</version>
		</dependency>

MultipartFilter 적용(web.xml)

	<!-- 멀티파트필터 -->
	<filter>
		<filter-name>MultipartFilter</filter-name>
 		<filter-class>org.springframework.web.multipart.support.MultipartFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>MultipartFilter</filter-name>
 		<url-pattern>/*</url-pattern>
	</filter-mapping>

MultipartResolver 등록 (common.xml)

	<!-- MULTIPART RESOLVERS -->
	<!-- regular spring resolver -->
	<bean id="spring.RegularCommonsMultipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
	    <property name="maxUploadSize" value="100000000" />
	    <property name="maxInMemorySize" value="100000000" />
	</bean>

allowCasualMultipartParsing 설정 (context.xml)

방법1 %TOMCAT%/conf/context.xml - Tomcat 전체 적용

watchedResoruce는 신경 ㄴㄴ

<Context allowCasualMultipartParsing="true">
    <!-- Default set of monitored resources. If one of these changes, the -->
	<!-- web application will be reloaded. -->
	<WatchedResource>WEB-INF/web.xml</WatchedResource>
	<WatchedResource>WEB-INF/tomcat-web.xml</WatchedResource>
	<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>

	<!-- Uncomment this to disable session persistence across Tomcat restarts -->
	<!-- <Manager pathname="" /> -->
	<!-- 캐시문제해결 -->
	<Resources cachingAllowed="true" cacheMaxSize="100000"></Resources>
</Context>

form의 enctype="multipart/form-data"

controller의 @RequestMapping(value = "/insertCompleteForProblem.do", method = RequestMethod.POST, headers = ("content-type=multipart/*"))