This is more a Java+Servlet question, as your problem
has nothing to do specifically with XML. So you
probably should ask this question on some other
mailing list (classes involved look like Tomcat
classes, but embedded in Sun's App server?).
-+ Tatu +-
--- Seetha Rama Krishna <> wrote:
> Hi All,
> I am tryng to generate the xml file
> from servlet. I am getting the following
> exception.
>
>
>
[#|2006-06-16T16:40:21.187+0530|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.system.container.web|_ThreadID=21;|ApplicationDispatcher[/ruleengine]
> 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:619)
> at
>
org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:181)
> at
>
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:143)
> at
>
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:136)
> at
>
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:195)
> at
>
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:120)
> at
>
org.apache.jasper.runtime.JspFactoryImpl.access$100(JspFactoryImpl.java:42)
> at
>
org.apache.jasper.runtime.JspFactoryImpl$PrivilegedReleasePageContext.run(JspFactoryImpl.java:178)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:78)
> at
>
org.apache.jsp.htmls.jsps.backUp1_jsp._jspService(backUp1_jsp.java:287)
> at
>
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:105)
> at
>
javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
> at
>
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:336)
> at
>
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
> at
>
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:251)
> at
>
javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
> at
>
sun.reflect.GeneratedMethodAccessor128.invoke(Unknown
> Source)
> at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at
> java.lang.reflect.Method.invoke(Method.java:324)
> at
>
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
> at
>
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
> at
>
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
> at
>
org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
> at
>
org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
> at
>
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:723)
> at
>
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:482)
> at
>
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:417)
> at
>
org.apache.catalina.core.ApplicationDispatcher.access$000(ApplicationDispatcher.java:80)
> at
>
org.apache.catalina.core.ApplicationDispatcher$PrivilegedForward.run(ApplicationDispatcher.java:95)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313)
> at
>
com.stivant.esp.ruleengine.servlet.BackUpServlet1.doGet(Unknown
> Source)
> at
>
javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
> at
>
javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
> at
>
sun.reflect.GeneratedMethodAccessor128.invoke(Unknown
> Source)
> at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at
> java.lang.reflect.Method.invoke(Method.java:324)
> at
>
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
> at
>
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
> at
>
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
> at
>
org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
> at
>
org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
> at
> java.security.AccessController.doPrivileged(Native
> Method)
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
> at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
> at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
> at
>
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
> at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
> at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
> at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
> at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
> at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
> at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
> at
>
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
> at
>
com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
> at
>
com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
> at
>
com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
> at
>
com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
> |#]
>
>
> Here is my code
> XMLSerializer serial = new
> XMLSerializer(stringOut, new OutputFormat("xml",
> "UTF-8", true));
> serial.setOutputCharStream(new
> FileWriter(backupFileName));
>
> serial.serialize(doc.getDocumentElement());
>
>
> response.setContentType("application/xml");
>
> response.setHeader("Content-Disposition",
> "attachement; filename="+ backupFileName);
> File fileToDownload = new
> File(backupFileName);
> FileInputStream fileInputStream = new
> FileInputStream(fileToDownload);
> int i = 0;
> OutputStream os =
> response.getOutputStream();
> while ((i = fileInputStream.read()) !=
> -1) {
> os.write(i);
> }
> fileInputStream.close();
>
>
> }
>
> Can u guys tell me how to set the output format
> for the output stream??
>
> regards,
> Krish
>
>
>
> ---------------------------------
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