WW-1792 Date tag doesn't handle calendars

git-svn-id: https://svn.apache.org/repos/asf/struts/struts2/trunk@539926 13f79535-47bb-0310-9956-ffa450edef68

core/src/main/java/org/apache/struts2/components/Date.java

@@ -25,6 +25,7 @@ import java.io.Writer;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.Iterator;
 import java.util.List;
 
@@ -274,9 +275,14 @@ public class Date extends Component {
         String msg = null;
         ValueStack stack = getStack();
         java.util.Date date = null;
-        // find the name on the valueStack, and cast it to a date
+        // find the name on the valueStack
         try {
-            date = (java.util.Date) findValue(name);
+            //suport Calendar also
+            Object dateObject = findValue(name);
+            if (dateObject instanceof java.util.Date)
+                date = (java.util.Date) dateObject;
+            else if(dateObject instanceof Calendar)
+                date = ((Calendar) dateObject).getTime();
         } catch (Exception e) {
             LOG.error("Could not convert object with key '" + name
                     + "' to a java.util.Date instance");

core/src/test/java/org/apache/struts2/views/jsp/ui/DateTagTest.java

@@ -51,6 +51,20 @@ public class DateTagTest extends AbstractTagTest {
         tag.doEndTag();
         assertEquals(formatted, writer.toString());
     }
+    
+    public void testCustomFormatCalendar() throws Exception {
+        String format = "yyyy/MM/dd hh:mm:ss";
+        Calendar calendar = Calendar.getInstance();
+        String formatted = new SimpleDateFormat(format).format(calendar.getTime());
+        context.put("myDate", calendar);
+
+        tag.setName("myDate");
+        tag.setNice(false);
+        tag.setFormat(format);
+        tag.doStartTag();
+        tag.doEndTag();
+        assertEquals(formatted, writer.toString());
+    }
 
     public void testDefaultFormat() throws Exception {
         Date now = new Date();