[JBoss Seam] - Re: Newbie Problem with Exception handling and pages.xml
by sheadley3228
Seams like have am now able to transfer to my error.xhtml page, but I have another problem. I don't have access to the xception message or anything dealing with the exception. I have tried 2 approaches:
1. Create an Exception Listener:
| import java.io.PrintWriter;
| import java.io.StringWriter;
| import java.util.Iterator;
| import java.util.List;
| import java.util.Map;
|
| import javax.faces.event.PhaseEvent;
| import javax.faces.event.PhaseId;
| import javax.faces.event.PhaseListener;
|
| import org.jboss.seam.annotations.Logger;
| import org.jboss.seam.log.Log;
| import javax.faces.application.FacesMessage;
| import javax.faces.component.UIViewRoot;
| import javax.faces.context.ExternalContext;
| import javax.faces.context.FacesContext;
| import javax.servlet.ServletContext;
| import javax.servlet.ServletException;
| import javax.servlet.http.HttpServletRequest;
| import javax.servlet.http.HttpServletResponse;
|
| public class ExceptionListener implements PhaseListener{
|
| @Logger private Log log;
| static private FacesContext _instance = null;
|
|
| static public FacesContext getContext() {
| return _instance;
| }
|
|
| public void beforePhase(PhaseEvent event) {
| System.out.println("ExceptionListener BeforePhase: " + event.getPhaseId());
| String viewId = "/document/error.jsp";
|
| PhaseId phase = event.getPhaseId();
| if (phase == PhaseId.INVOKE_APPLICATION) {
|
| try {
| set_instance(event.getFacesContext());
|
|
| if (getContext() != null && getContext().getExternalContext() != null)
| {
| System.out.println("Analyzing context");
| // Any errors?
| String tracing = getStackTrace();
|
| System.out.println("trace found "+ tracing);
|
| // has information so place in message
| if(tracing.length() > 0)
| {
| UIViewRoot view = getContext().getApplication().getViewHandler().
| createView(getContext(), viewId);
| view.setViewId(viewId);
| getContext().setViewRoot(view);
| getContext().renderResponse();
| }
| else
| return;
| }
| }
| catch (Exception ex) {
| log.error(ex.getMessage());
| ex.printStackTrace();
| }
| }
| }
|
| public void afterPhase(PhaseEvent event) {
| System.out.println("ExceptionListener AfterPhase: " + event.getPhaseId());
| String viewId = "/document/error.jsp";
|
| PhaseId phase = event.getPhaseId();
| if (phase == PhaseId.INVOKE_APPLICATION) {
|
| try {
| System.out.println("Setting instance");
| set_instance(event.getFacesContext());
| System.out.println("getContext()");
| if (getContext() != null && getContext().getExternalContext() != null)
| {
| System.out.println("Analyzing context");
| // Any errors?
| String tracing = getStackTrace();
|
| System.out.println("[[[[trace found "+ tracing +" ]]]]");
|
| // has information so place in message
| if(tracing.length() > 0)
| {
| UIViewRoot view = getContext().getApplication().getViewHandler().
| createView(getContext(), viewId);
| view.setViewId(viewId);
| getContext().setViewRoot(view);
| getContext().renderResponse();
| }
| else
| return;
| }
| }
| catch (Exception ex) {
| log.error(ex.getMessage());
| ex.printStackTrace();
| }
| }
| }
|
| public PhaseId getPhaseId() {
| return PhaseId.INVOKE_APPLICATION;
| }
|
| public String getStackTrace() {
| System.out.println(">>>>getStackTrace()");
| Object codeObj = null, messageObj = null, typeObj = null;
|
| System.out.println("Get Request Map");
| ExternalContext xctx = getContext().getExternalContext();
| Object context = xctx.getContext();
| //
| if(context instanceof ServletContext){
| HttpServletRequest request = (HttpServletRequest)getContext().getExternalContext().getRequest();
| codeObj = request.getAttribute("javax.servlet.error.status_code");
| messageObj = request.getAttribute("javax.servlet.error.message");
| typeObj = request.getAttribute("javax.servlet.error.exception_type");
| }
|
| System.out.println("Get javax.servlet.error.exception");
|
|
| return messageObj.toString();
|
| }
|
| private void fillStackTrace(Throwable ex, PrintWriter pw) {
| if (null == ex) {
| return;
| }
|
| ex.printStackTrace(pw);
|
| if (ex instanceof ServletException) {
| Throwable cause = ((ServletException) ex).getRootCause();
|
| if (null != cause) {
| pw.println("Root Cause:");
| fillStackTrace(cause, pw);
| }
| } else {
| Throwable cause = ex.getCause();
|
| if (null != cause) {
| pw.println("Cause:");
| fillStackTrace(cause, pw);
| }
| }
| }
|
|
| public static void set_instance(FacesContext _instance) {
| ExceptionListener._instance = _instance;
| }
| }
|
the other method that I used was to create an exception bean:
| @Stateful
| @Name("errorDisplayBean")
| @Scope(ScopeType.APPLICATION)
| @Synchronized
| @Startup
| public class ErrorDisplayBean implements ErrorDisplay{
| public String getStackTrace() {
| System.out.println(">>>>ErrorDisplayBean");
| FacesContext context = FacesContext.getCurrentInstance();
| Map request = context.getExternalContext().getRequestMap();
| Throwable ex = (Throwable) request.get("javax.servlet.error.exception");
| StringWriter sw = new StringWriter();
| PrintWriter pw = new PrintWriter(sw);
| fillStackTrace(ex, pw);
| return sw.toString();
| }
|
| private static void fillStackTrace(Throwable t, PrintWriter w) {
| if (t == null)
| return;
| t.printStackTrace(w);
| if (t instanceof ServletException) {
| Throwable cause = ((ServletException) t).getRootCause();
| if (cause != null) {
| w.println("Root cause:");
| fillStackTrace(cause, w);
| }
| } else if (t instanceof SQLException) {
| Throwable cause = ((SQLException) t).getNextException();
| if (cause != null) {
| w.println("Next exception:");
| fillStackTrace(cause, w);
| }
| } else {
| Throwable cause = t.getCause();
| if (cause != null) {
| w.println("Cause:");
| fillStackTrace(cause, w);
| }
| }
| }
|
| @Destroy @Remove
| public void destroy() {}
| }
|
None of these methods returned anything concerning the exception that was thrown. In both cases I had seam debug mode and facelets development turned off.
Thanks for your prompt help
Regards
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4115534#4115534
Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4115534
18 years, 3 months
[JBoss Seam] - Creating a simple dropdown problems
by felixk2
Hi,
I've been trying to accomplish a simple task. I just want to be able to determine which item in a drop down the user selected.
<h:selectOneMenu value="#{selectCustomerList.reseller}">
| <s:selectItems value="#{resellerList.resultList}" var="reseller" label="#{reseller.reseller}" noSelectionLabel="Select..."/>
| <s:convertEntity />
| </h:selectOneMenu>
| @Stateless
| @Name("selectCustomerList")
| public class SelectCustomerListAction implements SelectCustomerList
| {
| @In
| private Reseller reseller;
|
| @Logger private Log log;
|
| public String selectCustomerListAction()
| {
| log.info("reseller: " + reseller.getReseller());
| return "customerList";
| }
|
| public void setReseller(Reseller reseller)
| {
| this.reseller = reseller;
| }
|
| public Reseller getReseller()
| {
| return reseller;
| }
| }
|
When I run this I keep getting:
javax.el.PropertyNotFoundException: /selectReseller.xhtml @22,70 value="#{selectCustomerList.reseller}": Property 'reseller' not found on type org.javassist.tmp.java.lang.Object_$$_javassist_3
I must be missing something, what's the best way to pass to a method which drop down item has been selected.
Thanks,
Felix
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4115532#4115532
Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4115532
18 years, 3 months