스프링 인코딩 필터

//web.xml

<filter>
	<filter-name>encodingFilter</filter-name>
	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
	<init-param>
		<param-name>encoding</param-name>
		<param-value>UTF-8</param-value>
	</init-param>
</filter>

<filter-mapping>
	<filter-name>encodingFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

pom.xml이나 web.xml 수정할때 우측 하단 building 끝나고 다른 작업하기 

building 되고 있는데 다른 거 하면 에러납니다...