Getoutputstream Has Already Been Called For This Response Error

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Getoutputstream() Has Already Been Called For This Response Servlet

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Glassfish Getoutputstream() Has Already Been Called For This Response

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Getoutputstream Has Already Been Called For This Response With Root Cause

Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up getOutputStream() has already been called for this response up vote 37 down vote favorite 8 getoutputstream() has already been called for this response in java I google the error message getOutputStream() has already been called for this response and many people said it is because of the space or newline after <% or %>, but in my code , there is no a space or a newline. I am using tomcat6 on linux. <%@ page import="java.servlet.*, javax.servlet.http.*, java.io.*, java.util.*, com.lowagie.text.pdf.*, com.lowagie.text.*" %><% response.setContentType("application/pdf"); Document document = new Document(); try{ ByteArrayOutputStream buffer = new ByteArrayOutputStream(); PdfWriter.getInstance(document, buffer); document.open(); PdfPTable table = new PdfPTable(2); table.addCell("1"); table.addCell("2"); table.addCell("3"); table.addCell("4"); table.addCell("5"); table.addCell("6"); document.add(table); document.close(); DataOutput dataOutput = new DataOutputStream(response.getOutputStream()); byte[] bytes = buffer.toByteArray(); response.setContentLength(bytes.length); for(int i = 0; i < bytes.length; i++) { dataOutput.writeByte(bytes[i]); } }catch(DocumentException e){ e.printStackTrace(); } %> ~ org.apache.jasper.JasperException: java.lang.IllegalStateException: getOutputStream() has already been called for this response org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.IllegalStateException: getOutputStream() has already been called for this response org.apache.catalina.connector.Response.getWriter(Response.java:610) org.apache.catalina.connector.ResponseFacade.getWriter(Respon

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us java.lang.illegalstateexception getoutputstream() glassfish Learn more about Stack Overflow the company Business Learn more about hiring developers getoutputstream() has already been called for this response jsf or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack getoutputstream() has already been called for this response pdf Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up java.lang.IllegalStateException: getOutputStream() has already been called for http://stackoverflow.com/questions/1776142/getoutputstream-has-already-been-called-for-this-response this response up vote 6 down vote favorite 2 I get the following exception when I'm trying to request loading images from server on client side: 241132533 [TP-Processor1] ERROR [/jspapps].[jsp] - Servlet.service() for servlet jsp threw exception java.lang.IllegalStateException: getOutputStream() has already been called for this response Can any one explain this exception to me and also how to get over it? java jsp share|improve this question edited http://stackoverflow.com/questions/3540464/java-lang-illegalstateexception-getoutputstream-has-already-been-called-for-t Aug 22 '10 at 6:39 BalusC 684k20824802695 asked Aug 22 '10 at 6:32 ama 1781317 add a comment| 11 Answers 11 active oldest votes up vote 7 down vote can any one explain this exception to me You're attempting to write binary data to response.getOutputStream() using raw Java code inside a JSP file which itself is already using response.getWriter() to write any template text. See also the Throws part of the linked javadocs. and also how to get over it? Write Java code in a real Java class instead. Create a class which extendsHttpServlet, move all that Java code to there, map it in web.xml and change the request URL to call the servlet instead. See also: Beginning and intermediate JSP/Servlet tutorials Basic example of an image servlet How to avoid Java code in JSP files share|improve this answer answered Aug 22 '10 at 6:38 BalusC 684k20824802695 sorry but I need to put my code in jsp file ,and i load the image by –ama Aug 22 '10 at 7:43 @ama: Turn view_image.jsp into a Servlet mapped to viewImage and call it like */