Struts2 action 的 ;jsessionid=xxx 使找不到页面 Bug 的解决 [转帖]
一: jsessionid 简介:
因为Session默认是需要Cookie支持的 有些客户浏览器是关闭Cookie的,
这个时候就需要在URL中指定服务器上的jssessionid标识.如果你的web应用带有 jsessionid ,首先你的web应用不安全,而且也不利于 SEO (亦不美观).
二: Java代码:
1 import javax.servlet.*; 2 import javax.servlet.http.HttpServletRequest; 3 import javax.servlet.http.HttpServletResponse; 4 import javax.servlet.http.HttpServletResponseWrapper; 5 import javax.servlet.http.HttpSession; 6 import java.io.IOException; 7 8 public class DisableUrlSessionFilter implements Filter { 9 10 public void doFilter(ServletRequest request, ServletResponse response, 11 FilterChain chain) throws IOException, ServletException { 12 if (!(request instanceof HttpServletRequest)) { 13 chain.doFilter(request, response); 14 return; 15 } 16 17 HttpServletRequest httpRequest = (HttpServletRequest) request; 18 HttpServletResponse httpResponse = (HttpServletResponse) response; 19 20 if (httpRequest.isRequestedSessionIdFromURL()) { 21 HttpSession session = httpRequest.getSession(); 22 if (session != null) 23 session.invalidate(); 24 } 25 // wrap response to remove URL encoding 26 HttpServletResponseWrapper wrappedResponse = new HttpServletResponseWrapper( 27 httpResponse) { 28 @Override 29 public String encodeRedirectUrl(String url) { 30 return url; 31 } 32 33 public String encodeRedirectURL(String url) { 34 return url; 35 } 36 37 public String encodeUrl(String url) { 38 return url; 39 } 40 41 public String encodeURL(String url) { 42 return url; 43 } 44 }; 45 chain.doFilter(request, wrappedResponse); 46 } 47 48 public void init(FilterConfig config) throws ServletException { 49 } 50 51 public void destroy() { 52 } 53 }
三: web.xml配置filter:
1 <filter> 2 <filter-name>jsessionid</filter-name> 3 <filter-class> 4 xinyu.filter.DisableUrlSessionFilter 5 </filter-class> 6 </filter> 7 <filter-mapping> 8 <filter-name>jsessionid</filter-name> 9 <url-pattern>/*</url-pattern> 10 </filter-mapping>
