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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() {
}
}
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