Sono alle prime armi con la gestione dei cookies e ho provato a copiare da un libro questo semplice codice:
Il problema, č che mi dā il seguente errore, quando cerco di aprire la servlet da browser:codice:package coreservlets; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; /** Sets six cookies: three that apply only to the current * session (regardless of how long that session lasts) * and three that persist for an hour (regardless of * whether the browser is restarted). */ public class SetCookies extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { for(int i=0; i<3; i++) { // Default maxAge is -1, indicating cookie // applies only to current browsing session. Cookie cookie = new Cookie("Session-Cookie " + i, "Cookie-Value-S" + i); response.addCookie(cookie); cookie = new Cookie("Persistent-Cookie " + i, "Cookie-Value-P" + i); // Cookie is valid for an hour, regardless of whether // user quits browser, reboots computer, or whatever. cookie.setMaxAge(3600); response.addCookie(cookie); } response.setContentType("text/html"); PrintWriter out = response.getWriter(); String title = "Setting Cookies"; out.println(ServletUtilities.headWithTitle(title) + "<BODY BGCOLOR=\"#FDF5E6\">\n" + "<H1 ALIGN=\"CENTER\">" + title + "</H1>\n" + "There are six cookies associated with this page.\n" + "To see them, visit the\n" + "<A HREF=\"/servlet/coreservlets.ShowCookies\">\n" + "<CODE>ShowCookies</CODE> servlet</A>.\n" + " \n" + "Three of the cookies are associated only with the\n" + "current session, while three are persistent.\n" + "Quit the browser, restart, and return to the\n" + "<CODE>ShowCookies</CODE> servlet to verify that\n" + "the three long-lived ones persist across sessions.\n" + "</BODY></HTML>"); } }
Help plz!codice:type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception java.lang.IllegalArgumentException: Cookie name "Session-Cookie 0" is a reserved token javax.servlet.http.Cookie.<init>(Cookie.java:140) coreservlets.SetCookies.doGet(SetCookies.java:19) javax.servlet.http.HttpServlet.service(HttpServlet.java:689) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:419) org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:133) javax.servlet.http.HttpServlet.service(HttpServlet.java:689) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.15 logs.
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