From 0e744da49ab46c6ae4adb8e4cc0a77d96e430fc6 Mon Sep 17 00:00:00 2001
From: Manuel Rego Casasnovas <mrego@igalia.com>
Date: Thu, 14 Apr 2011 12:38:06 +0200
Subject: [PATCH] Fixed NullPointerException in PageForErrorOnEvent.

FEA: ItEr74S04BugFixing
---
 .../navalplanner/web/error/PageForErrorOnEvent.java | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/error/PageForErrorOnEvent.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/error/PageForErrorOnEvent.java
index 21e09127e..321f2ebf3 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/error/PageForErrorOnEvent.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/error/PageForErrorOnEvent.java
@@ -47,7 +47,9 @@ public class PageForErrorOnEvent extends GenericForwardComposer {
         super.doAfterCompose(comp);
         logError();
         modalWindow = comp;
-        stacktrace.setValue(getStacktrace());
+        if (stacktrace != null) {
+            stacktrace.setValue(getStacktrace());
+        }
     }
 
     private void logError() {
@@ -76,9 +78,12 @@ public class PageForErrorOnEvent extends GenericForwardComposer {
     private String getStacktrace() {
         Throwable exception = (Throwable) Executions.getCurrent().getAttribute(
                 "javax.servlet.error.exception");
-        Writer stacktrace = new StringWriter();
-        exception.printStackTrace(new PrintWriter(stacktrace));
-        return stacktrace.toString();
+        if (exception != null) {
+            Writer stacktrace = new StringWriter();
+            exception.printStackTrace(new PrintWriter(stacktrace));
+            return stacktrace.toString();
+        }
+        return "";
     }
 
 }