public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
Cookie[] cookies = request.getCookies();
int userID = -1;
boolean newUser = false;
// determine whether we've seen this user before
if (cookies != null) {
for (Cookie c : cookies) {
if (c.getName().equals("userID")) {
userID = Integer.parseInt(c.getValue());
logger.log(Level.INFO, "Existing user: "******"userID", String.valueOf(userID));
response.addCookie(c);
logger.log(Level.INFO, "New user: "******"text/html");
response.setStatus(HttpServletResponse.SC_OK);
PrintWriter out = response.getWriter();
String title = "Cookie Servlet";
String bootstrapHeader =
"<!DOCTYPE html>"
+ "<html lang=\"en\">\n"
+ " <head>\n"
+ " <title>"
+ title
+ "</title>\n"
+ " <meta charset=\"utf-8\">\n"
+ " <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n"
+ " <link rel=\"stylesheet\" href=\"http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css\">\n"
+ " <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js\"></script>\n"
+ " <script src=\"http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js\"></script>\n"
+ " </head>\n";
String body =
" <body>\n"
+ " <div class=\"container\">\n"
+ " <p>Hello, "
+ (newUser ? "new" : "existing")
+ " user!</p>\n"
+ " </div>\n"
+ " </body>\n";
String footer = "</html>";
String page = bootstrapHeader + body + footer;
out.println(page);
}
