Help - Problems with redirect in servlet filter in my JSF web app

[Melinda Savoy]

In an attempt to validate a valueID BEFORE a specific web page is rendered I am trying to create a servlet filter for validation purposes. The issue that I am running into is that the page cannot be forwarded within my application. I am running this web app locally and so I'm sure my configuration somewhere is wrong.

Any help/direction would be greatly appreciated. Thank you.

web.xml:

<filter>
     <filter-name>validationfilter</filter-name>
     <filter-class>pagecode.ValidationFilter</filter-class>
   </filter>
   <filter-mapping>
     <filter-name>validationfilter</filter-name>
     <url-pattern>*.jsp</url-pattern>
     <dispatcher>REQUEST</dispatcher>
     <dispatcher>FORWARD</dispatcher>
   </filter-mapping>

ValidationFilter code:

package pagecode;

import java.io.IOException;

import javax.faces.context.FacesContext;
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;


public class ValidationFilter implements Filter {
	
	private FilterConfig fc;
	private String	userID;
	private UserService userService = BeanConfig.userService;

	public void init(FilterConfig filterConfig) throws ServletException {
		fc = filterConfig;		
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain fc) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;
		//String[] values = request.getParameterValues("user");
		String URI = req.getRequestURI();
		StringBuffer URL = req.getRequestURL();
		userID = request.getParameter("user").trim().toUpperCase();
		
		//if (values != null) {
		if (userID != null) {
			// Initially coming into the web app
			//userID = request.getParameter("user").trim().toUpperCase();
			userID = "bugsbunny";
			
			// Validate user			
			boolean validatedUser = userService.validateUserID(userID);
			
			// Redirect user depending on value of validatedUser
			if (validatedUser) {			
				resp.sendRedirect("/index.jsp?user="+userID);
			} else {
				resp.sendRedirect("/validationFailed.jsp");
			}
		} else{
			resp.sendRedirect("/validationFailed.jsp");
		}
		fc.doFilter(request, response);
	}

	public void destroy() {
		// TODO Auto-generated method stub		
	}
}

URI value comes back as: /CSC-ARXfer/faces/index.jsp
URL value comes back as: http://machinename.cn.org:9081/CSC-ARXfer/faces/index.jsp

The error in my stack trace is as follows:

[11/3/10 9:03:05:936 CDT] 00000019 servlet       E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: Uncaught exception created in one of the service methods of the servlet Faces Servlet in application CSC-ARXferEAR. Exception created : javax.servlet.ServletException: Cannot forward. Response already committed.
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
	at pagecode.ValidationFilter.doFilter(ValidationFilter.java:52)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3810)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
Caused by: java.lang.IllegalStateException: Cannot forward. Response already committed.
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:169)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:491)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:159)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	... 29 more

[11/3/10 9:03:05:967 CDT] 00000019 FfdcProvider  I com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident emitted on C:\Program Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_23722372_10.11.03_09.03.05.9361380865264876418444.txt com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter 82
[11/3/10 9:03:05:982 CDT] 00000019 FfdcProvider  I com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident emitted on C:\Program Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_23722372_10.11.03_09.03.05.9677732254490843797808.txt com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter 144
[11/3/10 9:03:05:982 CDT] 00000019 FfdcProvider  I com.ibm.ws.ffdc.impl.FfdcProvider logIncident FFDC1003I: FFDC Incident emitted on C:\Program Files\IBM\SDP\runtimes\base_v7\profiles\was70profile1\logs\ffdc\server1_23722372_10.11.03_09.03.05.9824874096145957793469.txt com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest() 309
[11/3/10 9:03:05:998 CDT] 00000019 webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[Faces Servlet]: java.lang.IllegalStateException: Cannot forward. Response already committed.
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:169)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:491)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:159)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
	at pagecode.ValidationFilter.doFilter(ValidationFilter.java:52)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3810)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)

[Melinda Savoy]

After much googling and other list server input I have not been able to find a solution using a SERVLET FILTER to authenticate the user BEFORE the page has started to render.

My understanding was that a servlet filter was the way to go to response.sendRedirect() before the response was committed. But per the error I'm getting it looks like the response is already committed.

I have no idea what I'm doing wrong and any HELP/DIRECTION again, would be appreciated. This can't be this difficult... can it?

Please help. Thanks.

Here is my servlet filter:

public class ValidationFilter implements Filter {
	
	private FilterConfig fc = null;
	private String	userID;
	private UserService userService = BeanConfig.userService;
 
	public void init(FilterConfig filterConfig) throws ServletException {
		this.fc = filterConfig;		
	}
 
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain fc) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;
		//String[] values = request.getParameterValues("user");
		String URI = req.getRequestURI();
		StringBuffer URL = req.getRequestURL();
		String relativePath = req.getServletPath() + req.getPathInfo();
		
		userID = request.getParameter("user").trim().toUpperCase();
		
		if (userID != null) {
			
			userID = "bugsbunny";
			
			// Validate user			
			boolean validatedUser = userService.validateUserID(userID);
			
			// Redirect user depending on value of validatedUser
			if (validatedUser) {			
				resp.sendRedirect("/csc-ARXfer/faces/index.jsp?user="+userID);
			} else {
				resp.sendRedirect("/csc-ARXfer/faces/validationFailed.jsp");
			}
		} else{
			resp.sendRedirect("/faces/validationFailed.jsp");
		}
		fc.doFilter(request, response);
	}
 
	public void destroy() {
		fc = null;	
	}
}

My web.xml file looks like:

<filter>
     <filter-name>ValidationFilter</filter-name>
     <filter-class>pagecode.ValidationFilter</filter-class>
   </filter>
   <filter-mapping>
     <filter-name>ValidationFilter</filter-name>
     <url-pattern>/*</url-pattern>
     <dispatcher>FORWARD</dispatcher>
     <dispatcher>REQUEST</dispatcher>
   </filter-mapping>

Here is the error in my stack trace:

[11/3/10 15:06:08:367 CDT] 00000028 servlet       E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: Uncaught exception created in one of the service methods of the servlet Faces Servlet in application CSC-ARXferEAR. Exception created : javax.servlet.ServletException: Cannot forward. Response already committed.
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
	at pagecode.ValidationFilter.doFilter(ValidationFilter.java:51)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3810)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
Caused by: java.lang.IllegalStateException: Cannot forward. Response already committed.
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:169)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:491)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:159)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	... 29 more
 
[11/3/10 15:06:08:383 CDT] 00000028 webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[Faces Servlet]: java.lang.IllegalStateException: Cannot forward. Response already committed.
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:169)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:491)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:159)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
	at pagecode.ValidationFilter.doFilter(ValidationFilter.java:51)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3810)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
 
[11/3/10 15:06:08:383 CDT] 00000028 srt           W com.ibm.ws.webcontainer.srt.SRTServletResponse setStatus WARNING: Cannot set status. Response already committed.
[11/3/10 15:06:08:383 CDT] 00000028 srt           W com.ibm.ws.webcontainer.srt.SRTServletResponse addHeader WARNING: Cannot set header. Response already committed.
[11/3/10 15:06:08:523 CDT] 00000028 servlet       I com.ibm.ws.webcontainer.servlet.ServletWrapper init SRVE0242I: [CSC-ARXferEAR] [/CSC-ARXfer] [/error.jsp]: Initialization successful.
[11/3/10 15:06:08:539 CDT] 00000028 WASSessionCor W SessionAffinityManager setCookie SESN0066E: The response is already committed to the client. The session cookie cannot be set.
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O java.lang.IllegalStateException
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.srt.SRTServletResponse.addSessionCookie(SRTServletResponse.java:2036)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.session.SessionAffinityManager.setCookie(SessionAffinityManager.java:509)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.session.SessionManager.adaptAndSetCookie(SessionManager.java:649)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.session.SessionManager.createSession(SessionManager.java:636)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.session.SessionContext.getIHttpSession(SessionContext.java:471)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.session.SessionContext.getIHttpSession(SessionContext.java:406)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.srt.SRTRequestContext.getSession(SRTRequestContext.java:89)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.srt.SRTServletRequest.getSession(SRTServletRequest.java:1758)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.srt.SRTServletRequest.getSession(SRTServletRequest.java:1745)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at org.apache.jasper.runtime.PageContextImpl._initialize(PageContextImpl.java:219)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:190)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:166)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:132)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm._jsp._error._jspService(_error.java:76)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:98)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1661)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:104)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:121)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:239)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionProcessor.handleRequest(AbstractJSPExtensionProcessor.java:340)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:673)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.webapp.WebApp.sendError(WebApp.java:3255)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3843)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
[11/3/10 15:06:08:539 CDT] 00000028 SystemOut     O 	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)

[B Nirvan]

Try removing this line

    
fc.doFilter(request, response);

regards,
Nirvan.

[Melinda Savoy]

Nirvan, thanks for the reply. I tried your suggestion to remove the line of code you indicated above, however, when I did , my code went into a loop and then the request parameter that I was pulling for "user" was then NULL and consequently I got an NPE.

Here is the error stack trace:

[11/4/10 5:46:48:887 CDT] 0000004d webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[Faces Servlet]: java.lang.NullPointerException
	at pagecode.ValidationFilter.doFilter(ValidationFilter.java:32)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3810)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:276)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:931)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:183)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)

[11/4/10 5:46:49:122 CDT] 0000004d servlet       I com.ibm.ws.webcontainer.servlet.ServletWrapper init SRVE0242I: [CSC-ARXferEAR] [/CSC-ARXfer] [/error.jsp]: Initialization successful.

Any other suggestions or direction would be appreciated. Just an FYI, I am working in RAD 7.5.5.1 and with the websphere server. I don't think I've mentioned that before.

Thanks again.

[B Nirvan]

The url pattern specified by you in web.xml is (<url-pattern>*.jsp</url-pattern>), which means all the requests are intercepted by your filter and this also includes request to index.jsp. So suppose you have a valid userId entered by user, then the browser will be redirected to your index.jsp. When the request to index.jsp reaches your server, the filter again springs up and the whole process goes on again. So in short there should be some logic in your filter that will only intercept the original request and not index.jsp (or any other resource for that matter).

I am using a filter for the similar case as yours to authenticate users. Here is some code from that filter that will make my point clear.

    
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
                        throws IOException, ServletException {
        String path = ((HttpServletRequest) request).getRequestURI(); //Get the request URI
        if (path.indexOf("/secured") == -1) {                //If the request is not for a secured page, then continue chaining.
            chain.doFilter(request, response);
        } else if (isAuthenticatedUser(path, request, response)) { //If request is for secured page, authenticate user.
            chain.doFilter(request, response);                            // user authenticated, allow request from this user
        } else {
            request.getRequestDispatcher("/illegalAccess.xhtml").forward(request, response); //Unauthenticated. Block further
processing and display illegal access page.
        }
    }

regards,
Nirvan.

[Melinda Savoy]

In my code below, if the validatedUser == true then I get stuck in a loop in that the method completes but then I come right back into the method yet again and again and... The page is never redirected to the index.jsp page. If the user is NOT validated the sendRedirect to the validationFailed.jsp page works great but if the user IS validated then again I'm just stuck in that the doFilter() is just executed repetitively.

The only thing that I can think of is that the REDIRECT for a validated user is the SAME as the URI. Is that issue? If so, how can I correct this?

I do not understand what am I doing wrong? If the user IS validated how can I just redirect this user to the "/CSC-ARXfer/faces/index.jsp" page? That is all I'm needing to do.

Any help/direction/suggestion would be greatly appreciated. Here is the code:

public void doFilter(ServletRequest request, ServletResponse response, FilterChain fc) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;
		String URI = req.getRequestURI();
		int indexURI = URI.indexOf("/index.jsp");
		
		if (indexURI == 17) {
			userID = request.getParameter("user").trim().toUpperCase();
				
			if (userID != null) {
				
				// Test Invalid USERID
				//userID = "bugsbunny";
				
				// Validate user			
				boolean validatedUser = userService.validateUserID(userID);
				
				// Redirect user depending on value of validatedUser
				if (validatedUser) {
					resp.sendRedirect("/CSC-ARXfer/faces/index.jsp?user="+userID);
				} else {
					resp.sendRedirect("/CSC-ARXfer/faces/validationFailed.jsp");
				}
			} else{
				resp.sendRedirect("/CSC-ARXfer/faces/validationFailed.jsp");
			}
		} else {
			fc.doFilter(request, response);
		}
	}

[Melinda Savoy]

I actually have the second section of my servlet filter working if you can believe it but could really use some help in fixing the first section of my code.

I finally was to get the section that states if the USERID is FALSE then do the sendRedirect().

However, when the USERID is TRUE I go into a loop. Here is my code and ANY HELP/DIRECTION/SUGGESTIONS yet again would great be appreciated. Thank you.

Here is the servlet code:

public class ValidationFilter implements Filter {
	
	private FilterConfig fc = null;
	private String userID;
	private UserService userService = BeanConfig.userService;

	public void init(FilterConfig filterConfig) throws ServletException {
		this.fc = filterConfig;		
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain fc) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;
		String URI = req.getRequestURI();
		int value = URI.indexOf("/index.jsp");
		
		if (URI.indexOf("/index.jsp") == 17) {
			userID = request.getParameter("user").trim().toUpperCase();
				
			if (userID != null) {
				
				// Validate user			
				boolean validatedUser = userService.validateUserID(userID);
				
				// Redirect user depending on value of validatedUser
				if (URI.indexOf("/index.jsp") == -1) {
					fc.doFilter(request, response);
				} else if (validatedUser) { 
					resp.sendRedirect("/CSC-ARXfer/faces/index.jsp?user="+userID);
				} else {
					resp.sendRedirect("/CSC-ARXfer/faces/validationFailed.jsp");
				}
			} else{
				resp.sendRedirect("/CSC-ARXfer/faces/validationFailed.jsp");
			}
		} else {
			fc.doFilter(request, response);
		}
	}

	public void destroy() {
		fc = null;	
	}
}