java.lang.IllegalStateException: getOutputStream() has already been called for this response

Hi,
I am trying this code to generate captcha and provide the user to enter the values in text field.
The Captcha is appearing,but the text input fields are not appearing.
I am getting this error java.lang.IllegalStateException: getOutputStream() has already been called for this response

Here is the JSP

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page import="javax.servlet.*" %>
<%@page import="java.util.Locale" %>
<%@page import="java.awt.image.BufferedImage" %>
<%@page import="java.io.ByteArrayOutputStream" %>

<%@page import="com.sun.image.codec.jpeg.JPEGCodec" %>
<%@page import="com.sun.image.codec.jpeg.JPEGImageEncoder" %>
<%@page import="com.octo.captcha.service.CaptchaServiceException" %>
<%@page import="com.octo.captcha.service.image.ImageCaptchaService"%>
<%@page import="com.octo.captcha.service.image.DefaultManageableImageCaptchaService" %>

<%		byte[] captchaChallengeAsJpeg = null;
       // the output stream to render the captcha image as jpeg into
        ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
        ImageCaptchaService instance = new DefaultManageableImageCaptchaService();
        System.out.println("request.getSession().getId()" + request.getSession().getId());
       
        try {
        	
            // call the ImageCaptchaService getChallenge method
            BufferedImage challenge = instance.getImageChallengeForID(request.getSession().getId(), Locale.ENGLISH);
            // a jpeg encoder
            JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
            jpegEncoder.encode(challenge);
            
        } catch (IllegalArgumentException e) {
            System.out.println("IllegalArgumentException es");
            return;
        } catch (CaptchaServiceException e) {
        	 System.out.println("CaptchaServiceException es");
            return;
        }catch (Exception e) {
        	System.out.println("Exception e");
        	  return;
        }
        
        captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
        response.setHeader("Cache-Control", "no-store");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setContentType("image/jpeg"); 
    	//System.out.println("Buffer Size" + response.getBufferSize());
    		
    	ServletOutputStream responseOutputStream = response.getOutputStream();
    	responseOutputStream.write(captchaChallengeAsJpeg);
      	responseOutputStream.flush();
      	responseOutputStream.close();
    
       	
   %>
   
<html>
<head>
<title>Insert title here</title>
</head>
<body>
	<script language="JavaScript">  
	function doCompare(){
			var displayValue = document.getElementById("CaptchaDisplay").value;
			var inputValue = document.getElementById("CaptchaInput").value;
			alert(displayValue);
			alert(inputValue);

if(displayValue = inputValue) { alert("Hehe ..Your input is right"); }
			else { alert("Stupid ..try again"); }
	}
	</script>
	
	<div id="CaptchaDisplay"><%=captchaChallengeAsJpeg %>  </div>
	<br>
	<br>
	<br>
	
	<div> Type Captcha </div>
	<div>
		<input name="TypeCaptcha" maxlength="8" size="12" id="CaptchaInput" type="text" />
	</div>

And the error

equest.getSession().getId()C26FB56BC507153AE418591175866518
Apr 20, 2010 11:12:09 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:610)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:188)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:118)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:77)
at org.apache.jsp.TestR_jsp._jspService(TestR_jsp.java:158)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)

Can anyone help?

you should never close the servlet's output stream. Leave that up to the servlet container.
Please go through the reply in the following link
IllegalStateException-getOutputStream-has-already-been

Thanks

I have deleted the line
responseOutputStream.close();

But still its giving the same error.

"manishkumarlal cs", please check your private messages for a warning from JavaRanch.

Please UseCodeTags when you post a code. It's unnecessarily hard to read the code otherwise.
Please edit your post to add code tags by clicking the

button.