Java Web 应用似乎总有这样的情况,有事没事总是要在 URL 后面加上个 jsessionid,而且似乎不能使用配置的方式直接禁用 URL 传递 sessionid,这样,就比较容易造成安全性的问题,或者在浏览器地址栏里留下一堆很不好看的地址,在 Struts2 中,使用了 url 标签的所有链接,甚至 CSS, JS 这样的东西,都会加上 jsessionid,如何去禁用呢,搜索国内的相关文章,无功而返,询问我们过去的架构师,也没有做过,只好想办法去找国外的网站,找到了这样的一篇文章。 http:///articles/jsessionid-considered-harmful 通过加入 Filter 的方式过滤掉 URL 中包含的 jsessionid,再重新包装 Response 返回给浏览器。 因为没有太多东西,就不多解释了,大家拿了用就可以了。 import javax.servlet.*;
import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpServletResponseWrapper; import javax.servlet.http.HttpSession; import java.io.IOException; /** * Servlet filter which disables URL-encoded session identifiers. * <p/> * <pre> * Copyright (c) 2006, Craig Condit. All rights reserved. * <p/> * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * <p/> * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * <p/> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * </pre> */ @SuppressWarnings("deprecation") public class DisableUrlSessionFilter implements Filter { /** * Filters requests to disable URL-based session identifiers. */ public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { // skip non-http requests if (!(request instanceof HttpServletRequest)) { chain.doFilter(request, response); return; } HttpServletRequest httpRequest = (HttpServletRequest) request; HttpServletResponse httpResponse = (HttpServletResponse) response; // clear session if session id in URL if (httpRequest.isRequestedSessionIdFromURL()) { HttpSession session = httpRequest.getSession(); if (session != null) session.invalidate(); } // wrap response to remove URL encoding HttpServletResponseWrapper wrappedResponse = new HttpServletResponseWrapper(httpResponse) { @Override public String encodeRedirectUrl(String url) { return url; } @Override public String encodeRedirectURL(String url) { return url; } @Override public String encodeUrl(String url) { return url; } @Override public String encodeURL(String url) { return url; } }; // process next request in chain chain.doFilter(request, wrappedResponse); } /** * Unused. */ public void init(FilterConfig config) throws ServletException { } /** * Unused. */ public void destroy() { } |
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来自: CevenCheng > 《JVM》