[JAVA / jsp] 파일명이 한글로 된 파일 다운로드 하면, OO.jsp 로 다운됨.

📍 jsp 에서 java 사용해서 파일을 다운로드 해야되는데  안 됨?

• "다운로드" 버튼을 누르면, 해당 파일이 다운되는 게 아니고
• 내가 다운로드를 하기 위해 만들은 jsp 파일이 다운로드 됨...;;;;

 

 

📍  간략 오류 내용.

• org.apache.catalina.core.StandardWrapperValve.invoke 경로 []의 컨텍스트 내의 서블릿 [jsp]을(를) 위한 Servlet.service() 호출이, 근본 원인(root cause)과 함께, 예외 [java.lang.IllegalStateException: 이 응답을 위해 getOutputStream()이 이미 호출되었습니다.]을(를) 발생시켰습니다.
• 오류 전체.

13-Jul-2023 13:49:33.195 심각 [ajp-nio-221.132.82.110-8009-exec-7] org.apache.catalina.core.StandardWrapperValve.invoke 경로 []의 컨텍스트 내의 서블릿 [jsp]을(를) 위한 Servlet.service() 호출이, 근본 원인(root cause)과 함께, 예외 [java.lang.IllegalStateException: 이 응답을 위해 getOutputStream()이 이미 호출되었습니다.]을(를) 발생시켰습니다.
java.lang.IllegalStateException: 이 응답을 위해 getOutputStream()이 이미 호출되었습니다.
at org.apache.catalina.connector.Response.getWriter(Response.java:569)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:190)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:118)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:111)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:167)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:120)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
at org.apache.jsp.custom.budget.budget_005fatt_005fopen_jsp._jspService(budget_005fatt_005fopen_jsp.java:948)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at co m.hs.common.filter.CharsetFilter.doFilter(CharsetFilter.java:82) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:422)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

 

 

📍 소스코드 내용

<%@ page contentType="text/html;charset=utf-8" %>
<%@ page import="java.net.*"%>

<%
	
	request.setCharacterEncoding("UTF-8");
	String file_path = request.getParameter("file_path");
	String fn = request.getParameter("fn");
	String file_name = "";

	System.out.println("##### req_file_path : " + file_path);

   if(!"".equals(file_path)) {

         for(StringTokenizer st = new StringTokenizer(file_path, "/"); st.hasMoreTokens();) {
            file_name = st.nextToken();
         }	  

			int filesize = 0;

			file_path = file_path;

			File sz = new File(file_path);
			filesize = (int)sz.length();


			
            // ★★★ 중요 2.
            // !!! 여기서 한글을 인코딩해서 한글로 된 파일을 다운로드 받을 수 있게 했다. !!!!
			fn = URLEncoder.encode(file_name, "utf-8"); //.replaceAll("\\+", "%20");
            // 중요 2. ★★★

			/*
			System.out.println("##### --file_path : " + file_path);
			System.out.println("##### --file_name : " + file_name);
			System.out.println("##### --fn : " + fn);
			*/

			response.setHeader("Content-Disposition", "attachment;filename="+ fn +";");
			response.setContentType("Content-type:application/octet-stream");
			response.setContentLength(filesize);

			byte b[] = new byte[filesize];
			
            // ★★★ 중요 1. 
            out.clear();
			out=pageContext.pushBody();
            // 중요 1. ★★★

			ServletOutputStream fout = response.getOutputStream();
			try
			{
				 System.out.println("##### file_path2 : " + file_path);
				 File f = new File(file_path);
				 FileInputStream fin = new FileInputStream(f);

				 fin.read(b);
				 fout.write(b,0,filesize);
			}
			catch(FileNotFoundException e){}
			finally { fout.close(); }

	} else {
%><script language="javascript">alert("File Not Found!");</script><%	}%>

 

 

 

 

 

 

 

 

오류 내용.

13-Jul-2023 14:22:27.169 경고 [ajp-nio-221.132.82.110-8009-exec-7] org.apache.coyote.ajp.AjpProcessor.prepareResponse The HTTP response header [Content-Disposition] with value [attachment;filename=테스트파일.txt;] has been removed from the response because it is invalid
java.lang.IllegalArgumentException: code point [53,580]에 위치한 유니코드 문자 [테]은(는), 0에서 255까지의 허용 범위 바깥에 있으므로 인코딩될 수 없습니다.
at org.apache.tomcat.util.buf.MessageBytes.toBytesSimple(MessageBytes.java:290)
at org.apache.tomcat.util.buf.MessageBytes.toBytes(MessageBytes.java:261)
at org.apache.coyote.ajp.AjpMessage.appendBytes(AjpMessage.java:164)
at org.apache.coyote.ajp.AjpProcessor.prepareResponse(AjpProcessor.java:979)
at org.apache.coyote.AbstractProcessor.action(AbstractProcessor.java:375)
at org.apache.coyote.Response.action(Response.java:209)
at org.apache.coyote.Response.sendHeaders(Response.java:434)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:291)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:250)
at org.apache.catalina.connector.CoyoteOutputStream.close(CoyoteOutputStream.java:153)
at org.apache.jsp.custom.budget.budget_005fatt_005fopen_jsp._jspService(budget_005fatt_005fopen_jsp.java:928)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at co m.hs.common.filter.CharsetFilter.doFilter(CharsetFilter.java:82) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:422)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

 

 

 

 

📍 ?

• ㅇㅇ

 

 

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출처 : 

https://kldp.org/node/151410

 

https://zincod.tistory.com/102

 

https://okky.kr/questions/32941

 

https://rainny.tistory.com/269

 

 

https://oingdaddy.tistory.com/449

 

https://hotwolf.tistory.com/5

1.Jsp 페이지에서 다운로드 구현할때 주의 할점.

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