Remove the jsessionid that comes with the URL

Configure filter in Web. xml:

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<filter>    <filter-name>jsessionid</filter-name>    <filter-class>     cn.iautos.mall.filter.RemoveUrlSessionFilter    </filter-class> </filter> <filter-mapping>    <filter-name>jsessionid</filter-name>    <url-pattern>/*</url-pattern> </filter-mapping>

The Java code is as follows:

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package cn.iautos.mall.filter;import java.io.IOException;import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpServletResponseWrapper; import javax.servlet.http.HttpSession;/**  * 去除url中的jsessionid  * @author xuzhenmin  * @version 2014-5-30  下午2:33:34  */ public class RemoveUrlSessionFilter implements Filter {       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;              }                      public String encodeRedirectURL(String url) {                 return url;              }                       public String encodeUrl(String url) {                 return url;              }                       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() {      } }