/*
Copyright (C) 2010 maik.jablonski@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package jfix.servlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Cookies {
/**
* Sets a cookie with given name and value in given response.
*/
public static void set(HttpServletResponse response, String name,
String value, int expiry) {
Cookie cookie = new Cookie(name, value);
cookie.setPath("/");
cookie.setMaxAge(expiry);
response.addCookie(cookie);
}
/**
* Sets a cookie with given name and value in given response. Given expiry
* sets the maximum age for a cookie in seconds.
*/
public static void set(HttpServletResponse response, String name,
String value) {
set(response, name, value, -1);
}
/**
* Reads a cookie with given name from given request. Returns null if cookie
* with given name doesn't exist.
*/
public static String get(HttpServletRequest request, String name) {
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
if (cookie.getName().equals(name)) {
return cookie.getValue();
}
}
}
return null;
}
/**
* Reads a cookie with given name from given request. Returns given
* defaultValue if cookie with given name doesn't exist.
*/
public static String get(HttpServletRequest request, String name,
String defaultValue) {
String value = Cookies.get(request, name);
if (value != null) {
return value;
} else {
return defaultValue;
}
}
/**
* If a request parameter with given name is set, transfer it to cookie.
* Otherwise return cookie with given name, use given defaultValue if cookie
* doesn't exist. Given expiry sets the maximum age for a cookie in seconds.
*/
public static String pick(HttpServletRequest request,
HttpServletResponse response, String name, String defaultValue,
int expiry) {
String value = request.getParameter(name);
if (value != null) {
Cookies.set(response, name, value, expiry);
} else {
value = Cookies.get(request, name, defaultValue);
}
return value;
}
/**
* If a request parameter with given name is set, transfer it to cookie.
* Otherwise return cookie with given name, use given defaultValue if cookie
* doesn't exist.
*/
public static String pick(HttpServletRequest request,
HttpServletResponse response, String name, String defaultValue) {
return pick(request, response, name, defaultValue, -1);
}
}