올려주신 가우스 서비스쪽 jsp 를 보시면 맨 마지막에 %> 뒤에 엔터값 내지 공백이 들어가 있습니다.
%> 이후에는 공백이나 엔터값이 들어가면 그와 같은 에러가 발생하게 됩니다.
OutputStream 이 이미 닫힌상태에서 또 다른 출력을 하게 되므로 발생하는 에러 입니다.


>게시판을 이용해 주셔서 감사합니다.
>다음양식에 맞게 입력해주세요.
>
>* 고객시스템명 : KTF 국 데이터 관리 시스템
>* GAUCE 버전 : 4.0
>* WAS 종류(WebLogic 등등) : Tomcat5.0
>* DB 종류 : Oracle
>* 문의 유형(질문/요청/참조) :
>* 내용 :
>
>가우스 처리시 아래와 같은 오류가 발생합니다.
>
>Grid 상으로는 아무런 이상은 없으나 로그파일엔 자꾸만 쌓이네여...
>
>
>관련 소스 참조하여 보내드리니.. 알려 주시면 감솨하겠습니다.
>
>
>2006-04-14 17:35:36 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception
>java.lang.IllegalStateException: getOutputStream() has already been called for this response
>        at org.apache.coyote.tomcat5.CoyoteResponse.getWriter(CoyoteResponse.java:599)
>        at org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:163)
>        at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)
>        at com.gauce.filter.HttpGauceResponseWrapper.getWriter(Unknown Source)
>        at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:122)
>        at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
>        at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:190)
>        at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
>        at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
>        at org.apache.jsp.cable.viewCableBody_005fcall_jsp._jspService(viewCableBody_005fcall_jsp.java:2775)
>        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
>        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
>        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
>        at filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:122)
>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
>        at com.gauce.filter.GauceFilter.doFilter(Unknown Source)
>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
>        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
>        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
>        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
>        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
>        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
>        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
>        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
>        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
>        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
>        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
>        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
>        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
>        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
>        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
>        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
>        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
>        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)
>        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)
>        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
>        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)
>        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)
>        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
>        at java.lang.Thread.run(Unknown Source)
>
>