Interpretation d'erreur dans une servlet
Bonjour j'ai cette erreur :
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| java.lang.IllegalStateException: Impossible d'utiliser faire-suivre (forward) après que la réponse ait été envoyée
fonctions.emprunts.doPost(emprunts.java:73)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803) |
Et voici la servlet avec le fameux doPost qui ne va pas...:
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| package fonctions;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modeles.MdAbonnes;
import exception.Ca_chie;
/**
* Servlet implementation class emprunts
*/
public class emprunts extends HttpServlet {
private static final long serialVersionUID = 1L;
public static final String KEY_VALUE = "value";
public static final String KEY_DELAY = "delay";
public static final String VAR_LIST = "list";
public static final String VIEW_RESOURCE =
"biblio/list.jsp";
/**
* @see HttpServlet#HttpServlet()
*/
public emprunts() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
super.doGet(request, response);
doPost( request, response );
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(request, response);
try{
//
// If a delay was requested, cause the delay to occur
//
if (request.getParameter( KEY_DELAY ) != null) {
delay(request.getParameter( KEY_DELAY ));
}
//
// Get the passed prefix and obtain the list of matches
//
String prefix = request.getParameter( KEY_VALUE );
List<String> matches = findMatches( prefix );
//
// Set the matches as a scoped variable on the request
// and shuffle off to the JSP
//
request.setAttribute( VAR_LIST, matches );
request.getRequestDispatcher( VIEW_RESOURCE)
.forward( request, response );
}
catch (Ca_chie e) {
try {
request.setAttribute("message", e.toString());
getServletContext().getRequestDispatcher("/erreur.jsp").forward(request,response);
} catch (ServletException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} catch (ServletException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void delay( String delayValue ) {
try {
Thread.sleep( Integer.parseInt( delayValue ) );
}
catch (Exception e) {
//On failure, perform no delay
}
}
private List<String> abonne() throws Ca_chie{
List<MdAbonnes> liste= new ArrayList<MdAbonnes>();
List<String> lstr= new ArrayList<String>();
for (MdAbonnes a : liste)
lstr.add(a.getNom());
return lstr;
}
private List<String> findMatches( String prefix ) throws Ca_chie {
List<String> matches = new ArrayList<String>();
for (String choice : abonne()) {
if (choice.startsWith( prefix )) matches.add( choice );
}
return matches;
}
} |
Le forward qui ne va pas est en rouge...
Cordialement,
Hardokin
