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Servlet: Cannot forward after response has been committed


Servlet: Cannot forward after response has been committed

By : Saurin
Date : November 28 2020, 01:01 AM
should help you out I'm working on servlet page that renders content based on geo-location, and I want to use both sendRedirect and forward together; e.g; you browse example.com/aPage.jsp from France; first I want the servlet to redirect you to example.com/fr/aPage.jsp and then forward you to the resources page.
code :


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Cannot forward after response has been committed - Servlet

Cannot forward after response has been committed - Servlet


By : Y Zhao
Date : March 29 2020, 07:55 AM
may help you . I am trying to logout from the HTTPSession and redirect the user to the login page. , Remove calls to
code :
super.doGet(req, resp); // and
super.doPost(req, resp);
// HttpServlet#doGet() calls
resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, msg);
Cannot forward after response has been committed in Servlet

Cannot forward after response has been committed in Servlet


By : Kasia Charmas
Date : March 29 2020, 07:55 AM
this will help You have to change your "work flow". Web application is based on HTTP, which is request-response protocol. You have already responded to your request by writing to the response's outputStream. You cannot forward a respond once more. Moreover, you can open only one "output channel" - the outputStream for binary response or the writer for the textual one. Since the output stream was already opened for your PdfWriter, you cannot even obtain the writer to write a single bit.
What about displaying the staffing-results1.jsp with link to the PDF as a result of your form's submit action?
Cannot forward after response has been committed in java servlet

Cannot forward after response has been committed in java servlet


By : Rashmi Joshi
Date : March 29 2020, 07:55 AM
I hope this helps you . I have login JSP which will redirect to servlet called DisplayData which must check the user credentials and displays the data only for registered users. But it throws error called "Cannot forward after response has been committed". here is the servlet code , You have a couple of forwards in your code. One example:
code :
String url="/index.jsp";
RequestDispatcher dispatcher=getServletContext().getRequestDispatcher(url);
dispatcher.forward(request, response);
finally
{
    request.setAttribute("UserData", lst);
    RequestDispatcher rd=request.getRequestDispatcher("/displayrecord.jsp");
    rd.forward(request, response);
    lst.clear();
    out.close();
}
Cannot forward after response has been committed Servlet error

Cannot forward after response has been committed Servlet error


By : willkhtam
Date : March 29 2020, 07:55 AM
hop of those help? The problem is simple.The exception is caught,response is delegated from catch block and again from the finally block.
What you should do is have a single place for delegating your response
code :
boolean exceptionOcured =false;    
try{
// your code
}
catch(Exception e){
  exceptionOcured  =true;
}
finally{
// your code to release resources
}

if(exceptionOcured){
 RequestDispatcher rd = request.getRequestDispatcher("/error.jsp");
        rd.forward(request, response);
}else{
RequestDispatcher rd = request.getRequestDispatcher("/displayjobs.jsp");
        rd.forward(request, response);
}
Cannot forward after response has been committed in servlet filter

Cannot forward after response has been committed in servlet filter


By : fruity gordo
Date : March 29 2020, 07:55 AM
wish helps you just a guess: you need to swap chain.doFilter(request, response); and double value = 1/0; because at the moment you rise the exception after your servlet has done the work:
code :
try {
    double value = 1/0;// to make an exception
    chain.doFilter(request, response);
 } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        request.getRequestDispatcher("/error.html").forward(request, response);
 }  
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