jsp jstl lastindexof onerror (get file ext onerror default image)

<c:set var="ext" value="${fn:split(file.name,'.')}" />
${ext[fn:length(ext)-1] }



<c:set var="ext" value="${fn:split(file.name,'.')}" />
<img src="/images/common/icon/${ext[fn:length(ext)-1]}.gif" onError="this.src='/images/common/icon/unknown.gif'" alt="파일 다운로드" />