Erreur IllegalStateException: "getOutputStream()"

**c+cool** · 30/06/2008, 09h59

Bonjour,

Je voulais savoir si l'on pouvait m'aider sur la source de cette erreure:

java.lang.IllegalStateException: "getOutputStream()" a déjà été appelé pour cette réponse.
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.JspWriterImpl.flush(JspWriterImpl.java:170)
at java.io.PrintWriter.flush(PrintWriter.java:120)
at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:172)
at java.io.PrintWriter.newLine(PrintWriter.java:256)
at java.io.PrintWriter.println(PrintWriter.java:405)
at java.io.PrintWriter.println(PrintWriter.java:516)
at com.rentasoft.exceptions.ExceptionManager.htmlBugReport(ExceptionManager.java:54)

SAchant que je fais ca dans ma méthodede téléchargement:

Code :

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public static void telecharger(File file, javax.servlet.http.HttpServletResponse response) throws Exception {
    InputStream in = new FileInputStream(file);
    response.setContentType("application/download");
    response.setHeader("Content-Disposition","attachment; filename=\"" + file.getName() + "\"");
    javax.servlet.ServletOutputStream out = response.getOutputStream();
 
    int c;
    while ((c=in.read()) != -1)
      out.write( c );
 
    out.close();
    in.close();
  }