Read binary file information from servlet - from database accessor method

Okay, I have been working on this for awhile now and I just plain dont know what I am doing. Could someone please help me? I cannot find any examples through google or the forums for this specific type of situation( as in a servlet calls a method which gets binary file from a database).
- How do I get the inputStream into the servlet so that I can read it?
- Why am I getting the error message that OutputStream has already been called?
If someone could give me direction or simply tell me what I should look up - I would really really appreciate it.
The Servlet
response.setContentType("application/msword");
response.setHeader("Content-disposition","attachment; filename="+ file + ext);
OutputStream os = response.getOutputStream();
OOT openAttachments = searchInfo.openAttachments(newID, oot, ootNum, file, ext, os);
InputStream is2 = oot.getIs();
    byte b[] = new byte[16384];
    int numBytes;
        while((numBytes=is2.read(b))!=-1){
            os.write(b,0,numBytes);
            System.out.println("is - in while" + is);
        is2.close();
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/ootMain.jsp?newID="+newID);
dispatcher.forward(request, response);
        os.flush();
        os.close();
The Method
public OOT openAttachments(String newID, OOT oot, String ootNum, String file,
                           String ext, OutputStream os) {
    this.conn = database.SybaseDAO.grabConnection();
    String query = " edited for space'";
    state = conn.createStatement();
    rs = state.executeQuery(query);
        if(rs.next()){
           InputStream is = rs.getBinaryStream(2);
           oot.setIs(is);
           System.out.println("is - in while" + is);
           is.close();
Error Messages
(is - in while - method)    sun.jdbc.odbc.JdbcOdbcInputStream@c02a
(is2 - after - servlet)      sun.jdbc.odbc.JdbcOdbcInputStream@c02a
IOException: java.io.IOException: InputStream is no longer valid - the Statement
                                  has been closed, or the cursor has been moved
Mar 14, 2005 9:53:19 AM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this responseThanks for your help/time -
Crystal

Here is the entire exception:
Mar 16, 2005 9:32:44 AM org.apache.catalina.core.ApplicationDispatcher 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:596)
     at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:161)
     at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)
     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:182)
     at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
     at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
     at org.apache.jsp.ootMain_jsp._jspService(org.apache.jsp.ootMain_jsp:596)
     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:325)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:302)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:246)
     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 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:682)
     at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:581)
     at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:501)
     at oot.display_files.doGet(display_files.java:63)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:106)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:576)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
     at java.lang.Thread.run(Thread.java:595)
Mar 16, 2005 9:32:44 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet display_files threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
     at org.apache.catalina.connector.Response.getWriter(Response.java:596)
     at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:161)
     at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)
     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:182)
     at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
     at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
     at org.apache.jsp.ootMain_jsp._jspService(org.apache.jsp.ootMain_jsp:596)
     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:325)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:302)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:246)
     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 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:682)
     at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:581)
     at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:501)
     at oot.display_files.doGet(display_files.java:63)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:106)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:576)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
     at java.lang.Thread.run(Thread.java:595)Line 63 is the include...

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