java.lang.IllegalStateException: PWC1227: Cannot forward after response has been committed.....why it was comming?
to add some row data into a table, affter submmiting the button i have to show the details(data) in the 开发者_如何学Gonext page of that regarding table. when i am using RequestDispather class i am getting the java.lang.IllegalStateException:........ it was also comming while using response.sendRedirect("View.jsp");..... i am sending the code what i used in my page.
if(msg.equals("Values Added")){
RequestDispatcher rd = request.getRequestDispatcher("View.jsp");
rd.forward(request, response);
}
(OR)
if(msg.equals("Values Added")){
response.sendRedirect("View.jsp");
}
JSP is part of the response. You cannot change the response like that from inside a JSP. It's too late then. This piece of code should have been placed in a servlet class.
Change your form to submit to a servlet instead:
<form action="servleturl" method="post">
Create a servlet class which is mapped on an url-pattern of /servleturl/* and move all the Java code you have there in JSP into the doPost() method.
See also:
- Servlets tag info page - mini tutorial and useful links
- How to avoid Java code in JSP files
The following is not true per se:
"You cannot change the response like that from inside a JSP. It's too late then."
Just place your postback check and redirect before the html tag in your jsp...then everything will be fine.
So:
<% if(msg.equals("Values Added")){
response.sendRedirect("View.jsp");
} %>
<html > ... </html>
use else if in place of if
加载中,请稍侯......
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