去除url中自带的jsessionid

浏览数：45 / 时间：2015年06月09日

web.xml中配置Filter：

<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>
  

java代码如下：

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() {
     }
}