#1121 - Shortcut ignored property lookups to prevent NullPointerExcep…

…tions.

src/main/java/org/springframework/hateoas/mediatype/PropertyUtils.java

@@ -204,7 +204,7 @@ private static Stream<PropertyDescriptor> getPropertyDescriptors(Class<?> type)
 				.filter(descriptor -> !FIELDS_TO_IGNORE.contains(descriptor.getName()))
 				.filter(descriptor -> !descriptorToBeIgnoredByJackson(type, descriptor))
 				.filter(descriptor -> !toBeIgnoredByJackson(type, descriptor.getName()))
-				.filter(descriptor -> !readerIsNotToBeIgnoredByJackson(descriptor));
+				.filter(descriptor -> !readerIsToBeIgnoredByJackson(descriptor));
 	}
 
 	/**
@@ -229,8 +229,11 @@ private static boolean descriptorToBeIgnoredByJackson(Class<?> clazz, PropertyDe
 	 * @param descriptor
 	 * @return
 	 */
-	private static boolean readerIsNotToBeIgnoredByJackson(PropertyDescriptor descriptor) {
-		return toBeIgnoredByJackson(MergedAnnotations.from(descriptor.getReadMethod()));
+	private static boolean readerIsToBeIgnoredByJackson(PropertyDescriptor descriptor) {
+
+		Method reader = descriptor.getReadMethod();
+
+		return reader == null ? false : toBeIgnoredByJackson(MergedAnnotations.from(reader));
 	}
 
 	/**

src/test/java/org/springframework/hateoas/mediatype/PropertyUtilsTest.java

@@ -156,6 +156,14 @@ void considersJsr303Annotations() {
 		});
 	}
 
+	@Test // #1121
+	void considersPropertyWithoutReader() throws Exception {
+
+		InputPayloadMetadata metadata = PropertyUtils.getExposedProperties(WithoutReaderMethod.class);
+
+		assertThat(metadata.getPropertyMetadata("firstname")).isPresent();
+	}
+
 	@Data
 	@AllArgsConstructor
 	@JsonIgnoreProperties({ "ignoreThisProperty" })
@@ -219,4 +227,13 @@ public Employee newEmployee(@RequestBody EntityModel<Employee> employee) {
 			return employee.getContent();
 		}
 	}
+
+	static class WithoutReaderMethod {
+
+		private String firstname;
+
+		public void setFirstname(String firstname) {
+			this.firstname = firstname;
+		}
+	}
 }