DateFormatter's ISO patterns use XXX timezone notation (as per SimpleDateFormat's javadoc)

Issue: SPR-14675

spring-context/src/main/java/org/springframework/format/datetime/DateFormatter.java

@@ -49,8 +49,8 @@ public class DateFormatter implements Formatter<Date> {
 	static {
 		Map<ISO, String> formats = new HashMap<>(4);
 		formats.put(ISO.DATE, "yyyy-MM-dd");
-		formats.put(ISO.TIME, "HH:mm:ss.SSSZ");
-		formats.put(ISO.DATE_TIME, "yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+		formats.put(ISO.TIME, "HH:mm:ss.SSSXXX");
+		formats.put(ISO.DATE_TIME, "yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
 		ISO_PATTERNS = Collections.unmodifiableMap(formats);
 	}
 

spring-context/src/test/java/org/springframework/format/datetime/DateFormatterTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -124,27 +124,19 @@ public class DateFormatterTests {
 		formatter.setTimeZone(UTC);
 		formatter.setIso(ISO.TIME);
 		Date date = getDate(2009, Calendar.JANUARY, 1, 14, 23, 5, 3);
-		assertThat(formatter.print(date, Locale.US), is("14:23:05.003+0000"));
-		assertThat(formatter.parse("14:23:05.003+0000", Locale.US),
+		assertThat(formatter.print(date, Locale.US), is("14:23:05.003Z"));
+		assertThat(formatter.parse("14:23:05.003Z", Locale.US),
 				is(getDate(1970, Calendar.JANUARY, 1, 14, 23, 5, 3)));
 	}
 
-	@Test
-	public void shouldParseIsoTimeWithZeros() throws Exception {
-		DateFormatter formatter = new DateFormatter();
-		formatter.setIso(ISO.TIME);
-		Date date = formatter.parse("12:00:00.000-00005", Locale.US);
-		System.out.println(date);
-	}
-
 	@Test
 	public void shouldPrintAndParseISODateTime() throws Exception {
 		DateFormatter formatter = new DateFormatter();
 		formatter.setTimeZone(UTC);
 		formatter.setIso(ISO.DATE_TIME);
 		Date date = getDate(2009, Calendar.JUNE, 1, 14, 23, 5, 3);
-		assertThat(formatter.print(date, Locale.US), is("2009-06-01T14:23:05.003+0000"));
-		assertThat(formatter.parse("2009-06-01T14:23:05.003+0000", Locale.US), is(date));
+		assertThat(formatter.print(date, Locale.US), is("2009-06-01T14:23:05.003Z"));
+		assertThat(formatter.parse("2009-06-01T14:23:05.003Z", Locale.US), is(date));
 	}
 
 	@Test
@@ -201,7 +193,7 @@ public class DateFormatterTests {
 		assertThat("uses pattern",formatter.print(date, Locale.US), is("2009"));
 
 		formatter.setPattern("");
-		assertThat("uses ISO", formatter.print(date, Locale.US), is("2009-06-01T14:23:05.003+0000"));
+		assertThat("uses ISO", formatter.print(date, Locale.US), is("2009-06-01T14:23:05.003Z"));
 
 		formatter.setIso(ISO.NONE);
 		assertThat("uses style pattern", formatter.print(date, Locale.US), is("June 1, 2009"));

spring-context/src/test/java/org/springframework/format/datetime/DateFormattingTests.java

@@ -168,19 +168,19 @@ public class DateFormattingTests {
 	@Test
 	public void testBindISOTime() {
 		MutablePropertyValues propertyValues = new MutablePropertyValues();
-		propertyValues.add("isoTime", "12:00:00.000-0500");
+		propertyValues.add("isoTime", "12:00:00.000-05:00");
 		binder.bind(propertyValues);
 		assertEquals(0, binder.getBindingResult().getErrorCount());
-		assertEquals("17:00:00.000+0000", binder.getBindingResult().getFieldValue("isoTime"));
+		assertEquals("17:00:00.000Z", binder.getBindingResult().getFieldValue("isoTime"));
 	}
 
 	@Test
 	public void testBindISODateTime() {
 		MutablePropertyValues propertyValues = new MutablePropertyValues();
-		propertyValues.add("isoDateTime", "2009-10-31T12:00:00.000-0800");
+		propertyValues.add("isoDateTime", "2009-10-31T12:00:00.000-08:00");
 		binder.bind(propertyValues);
 		assertEquals(0, binder.getBindingResult().getErrorCount());
-		assertEquals("2009-10-31T20:00:00.000+0000", binder.getBindingResult().getFieldValue("isoDateTime"));
+		assertEquals("2009-10-31T20:00:00.000Z", binder.getBindingResult().getFieldValue("isoDateTime"));
 	}
 
 	@Test
@@ -229,7 +229,7 @@ public class DateFormattingTests {
 		registrar.setFormatter(dateFormatter);
 		setUp(registrar);
 		// This is a format that cannot be parsed by new Date(String)
-		String string = "2009-06-01T14:23:05.003+0000";
+		String string = "2009-06-01T14:23:05.003+00:00";
 		Date date = this.conversionService.convert(string, Date.class);
 		assertNotNull(date);
 	}