/
SessionIdUtil.java
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/
SessionIdUtil.java
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/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
package org.seasar.extension.httpsession;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.seasar.framework.util.StringUtil;
/**
* セッション識別子に関するユーティリティクラスです。
*
* @author higa
*
*/
public class SessionIdUtil {
/**
* セッション識別子のキーをあらわします。
*/
public static final String SESSION_ID_KEY = "S2SESSIONID";
static String cookieName = SESSION_ID_KEY;
static int cookieMaxAge = -1;
static String cookiePath = null;
static Boolean cookieSecure = null;
/**
* Cookieからセッション識別子を取り出します。
*
* @param request
* リクエスト
* @return セッション識別子
*/
public static String getSessionIdFromCookie(HttpServletRequest request) {
Cookie[] cookies = request.getCookies();
if (cookies == null) {
return null;
}
for (int i = 0; i < cookies.length; i++) {
Cookie cookie = cookies[i];
if (cookie.getName().equals(cookieName)) {
return cookie.getValue();
}
}
return null;
}
/**
* URIからセッション識別子を取り出します。
*
* @param request
* リクエスト
* @return セッション識別子
*/
public static String getSessionIdFromURL(HttpServletRequest request) {
String partOfUri = ";" + cookieName + "=";
String uri = request.getRequestURI();
int index = uri.lastIndexOf(partOfUri);
if (index < 0) {
return null;
}
uri = uri.substring(index + partOfUri.length());
int index2 = uri.indexOf('?');
if (index2 < 0) {
return uri;
}
return uri.substring(0, index2);
}
/**
* URLを書き換えて必要ならセッション識別子を組み込みます。
*
* @param url
* URL
* @param request
* リクエスト
* @return 書き換えたURL
*/
public static String rewriteURL(String url, HttpServletRequest request) {
if (request.isRequestedSessionIdFromCookie()) {
return url;
}
HttpSession session = request.getSession(false);
if (session == null) {
return url;
}
String partOfUri = ";" + cookieName + "=";
int index = url.indexOf('?');
if (index < 0) {
return url + partOfUri + session.getId();
} else {
return url.substring(0, index) + partOfUri + session.getId()
+ url.substring(index);
}
}
/**
* セッション識別子用のCookieを書き込みます。
*
* @param request
* リクエスト
* @param response
* レスポンス
* @param sessionId
* セッション識別子
*/
public static void writeCookie(HttpServletRequest request,
HttpServletResponse response, String sessionId) {
if (request.isRequestedSessionIdFromCookie()) {
return;
}
Cookie cookie = new Cookie(cookieName, sessionId);
if (StringUtil.isNotEmpty(cookiePath)) {
cookie.setPath(cookiePath);
} else {
String path = request.getContextPath();
cookie.setPath(StringUtil.isEmpty(path) ? "/" : path);
}
cookie.setMaxAge(cookieMaxAge);
if (cookieSecure != null) {
cookie.setSecure(cookieSecure.booleanValue());
}
response.addCookie(cookie);
}
}