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SessionUpdateFilter.java
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SessionUpdateFilter.java
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import java.io.IOException;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
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.HttpSession;
import com.ibm.websphere.servlet.session.IBMSession;
/**
* Servlet Filter implementation class SessionUpdateFilter
*/
public class SessionUpdateFilter implements Filter {
public void destroy() {
System.out.println("SessionUpdateFilter.destroy()");
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
System.out.println("SessionUpdateFilter.doFilter(ServletRequest, ServletResponse, FilterChain) ENTRY");
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
// pass the request along the filter chain
chain.doFilter(request, response);
HttpSession session = httpRequest.getSession(false); // do not force creation if session was NOT created
if (null != session){
System.out.println("Retrieved session "+ session + " ID: "+ session.getId());
List<String> attribNames = Collections.list((Enumeration<String>)session.getAttributeNames());
for (String attribName : attribNames) {
Object attribValue = session.getAttribute(attribName);
System.out.println("\t" + attribName + "--> "+ attribValue);
session.setAttribute(attribName, attribValue);
}
}
if (session instanceof IBMSession){
IBMSession ibmSession = (IBMSession) session;
ibmSession.sync();
System.out.println("SYNC issued for session "+ ibmSession.getId());
}
System.out.println("SessionUpdateFilter.doFilter(ServletRequest, ServletResponse, FilterChain) EXIT");
}
public void init(FilterConfig fConfig) throws ServletException {
System.out.println("SessionUpdateFilter.init(FilterConfig)");
}
}