UT010019: Response already commited

Cezar Apulchro

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Nov 7, 2023, 5:14:46 AM11/7/23

to WildFly

Hi, I've a servlet that get parameters of JSP login page to check if the user is valid, the return of this check is a cod that say what others JSP pages this user can access, then with this cod I call the page using the "RequestDispacher - with method forward" but I am receiving this error then I changed to "response.sendRedirect" and I received the same error, I use "itcmedbr/Frame_Usuario_W01.jsp" in Dispatcher and Redirect to load on browser.
Does anyone know how to solve it?

Bartosz Baranowski

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Nov 7, 2023, 6:00:41 AM11/7/23

to WildFly

Hey. Simple reproducer in such case would be worth gold bar or two. Otherwise hard to give any meaningful advice.
Also, what is "cod" ?

Cezar Apulchro

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Nov 7, 2023, 6:27:02 AM11/7/23

to WildFly

Hi, "cod" is a collumn of mysql table in this case "3" is returned from access method of mysql.

"

if (tipo.trim().equals("3"))
            {
                
                response.sendRedirect("itcmedbr/Frame_Usuario_W01.jsp");
               
            }

"
Thanks.

Cezar Apulchro

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Nov 7, 2023, 6:04:52 PM11/7/23

to WildFly

My environment:

- Java 20

- WildFly 27.0 Server

- Maven 4.0.0:

- jakarta.jakartaee-web-api
I am really nedding help.

Richard Opalka

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Nov 8, 2023, 5:52:20 AM11/8/23

to Cezar Apulchro, WildFly

Did you try WildFly 30 ?

Rio

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Cezar Apulchro

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Nov 8, 2023, 1:17:08 PM11/8/23

to WildFly

Why wildfly 30? I don't believe that until WildFly 29 nobody have used "RequestDispatcher".

Cezar Apulchro

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Nov 20, 2023, 5:20:20 AM11/20/23

to WildFly

After remove this lines from my servlet the problem was solved, wrong place of this lines.

Lines removed:

"

response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet NewServlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<br>");
out.println("<h1> Parametros enviados:</h1");
out.println("<br>");
out.println("<h1>Nome: " + Nome + " - Senha: " + Senha + " - CNPJ: " + CNPJ + "</h1>");
out.println("</body>");
out.println("</html>");
out.close();