Getting error when open the file

Question

Hi,
I am getting
" getOutputStream() has already been called for this response " when i wanted to open a file. Pls advise why I am getting this error and solution to tackle the error.
Thanks

Answer 1

Hi,
Thanks for the reply.
I am running jsp on jboss server. Previously, I was using java version 1.2.2 and the codes was working fine. But when i migrate the codes to jboss 3.2.5 with jdk 1.3.1_13, it throws the following error.
ERROR [org.jboss.web.localhost.Engine] 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 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.icbbv2.users.DownloadFile_jsp._jspService(DownloadFile_jsp.java:181)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
     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:810)
What i am trying to do is, I am downloading a file stored in Oracle database and open the file based on the file extension, i.e, using ms word for .doc ext .
This i s where it is throwing error:
mySmartUpload.downloadFile(docid,"application/msword",docname,65000);
and the method is as the following:
public void downloadFile(String sourceFilePathName, String contentType, String destFileName, int blockSize)
throws ServletException, IOException
if(sourceFilePathName == null)
throw new IllegalArgumentException(String.valueOf((new StringBuffer("File '")).append(sourceFilePathName).append("' not found (1040).")));
if(sourceFilePathName.equals(""))
throw new IllegalArgumentException(String.valueOf((new StringBuffer("File '")).append(sourceFilePathName).append("' not found (1040).")));
if(!isVirtual(sourceFilePathName) && m_denyPhysicalPath)
throw new SecurityException("Physical path is denied (1035).");
if(isVirtual(sourceFilePathName))
sourceFilePathName = m_application.getRealPath(sourceFilePathName);
File file = new File(sourceFilePathName);
FileInputStream fileIn = new FileInputStream(file);
long fileLen = file.length();
int readBytes = 0;
int totalRead = 0;
byte b[] = new byte[blockSize];
if(contentType == null)
m_response.setContentType("application/x-msdownload");
else
if(contentType.length() == 0)
m_response.setContentType("application/x-msdownload");
else
m_response.setContentType(contentType);
m_response.setContentLength((int)fileLen);
m_contentDisposition = m_contentDisposition == null ? "attachment;" : m_contentDisposition;
if(destFileName == null)
m_response.setHeader("Content-Disposition", String.valueOf((new StringBuffer(String.valueOf(m_contentDisposition))).append(" filename=").append(getFileName(sourceFilePathName))));
else
if(destFileName.length() == 0)
m_response.setHeader("Content-Disposition", m_contentDisposition);
else
m_response.setHeader("Content-Disposition", String.valueOf((new StringBuffer(String.valueOf(m_contentDisposition))).append(" filename=").append(destFileName)));
while((long)totalRead < fileLen)
readBytes = fileIn.read(b, 0, blockSize);
totalRead += readBytes;
m_response.getOutputStream().write(b, 0, readBytes);
fileIn.close();
Pls assist. Thanks in advance.
Rajes