UriTemplateRequestEntity overrides equals/hashCode

Closes gh-27531

Author: jhoeller

spring-web/src/main/java/org/springframework/http/RequestEntity.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -194,15 +194,15 @@ public boolean equals(@Nullable Object other) {
 			return false;
 		}
 		RequestEntity<?> otherEntity = (RequestEntity<?>) other;
-		return (ObjectUtils.nullSafeEquals(getMethod(), otherEntity.getMethod()) &&
-				ObjectUtils.nullSafeEquals(getUrl(), otherEntity.getUrl()));
+		return (ObjectUtils.nullSafeEquals(this.method, otherEntity.method) &&
+				ObjectUtils.nullSafeEquals(this.url, otherEntity.url));
 	}
 
 	@Override
 	public int hashCode() {
 		int hashCode = super.hashCode();
 		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.method);
-		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(getUrl());
+		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.url);
 		return hashCode;
 	}
 
@@ -544,13 +544,13 @@ private static class DefaultBodyBuilder implements BodyBuilder {
 		private final URI uri;
 
 		@Nullable
-		String uriTemplate;
+		private final String uriTemplate;
 
 		@Nullable
-		private Object[] uriVarsArray;
+		private final Object[] uriVarsArray;
 
 		@Nullable
-		Map<String, ?> uriVarsMap;
+		private final Map<String, ?> uriVarsMap;
 
 		DefaultBodyBuilder(HttpMethod method, URI url) {
 			this.method = method;
@@ -661,7 +661,7 @@ public <T> RequestEntity<T> body(T body, Type type) {
 			return buildInternal(body, type);
 		}
 
-		private <T> RequestEntity<T>  buildInternal(@Nullable T body, @Nullable Type type) {
+		private <T> RequestEntity<T> buildInternal(@Nullable T body, @Nullable Type type) {
 			if (this.uri != null) {
 				return new RequestEntity<>(body, this.headers, this.method, this.uri, type);
 			}
@@ -716,6 +716,25 @@ public Object[] getVars() {
 			return this.uriVarsMap;
 		}
 
+		@Override
+		public boolean equals(@Nullable Object other) {
+			if (this == other) {
+				return true;
+			}
+			if (!super.equals(other)) {
+				return false;
+			}
+			UriTemplateRequestEntity<?> otherEntity = (UriTemplateRequestEntity<?>) other;
+			return (ObjectUtils.nullSafeEquals(this.uriTemplate, otherEntity.uriTemplate) &&
+					ObjectUtils.nullSafeEquals(this.uriVarsArray, otherEntity.uriVarsArray) &&
+					ObjectUtils.nullSafeEquals(this.uriVarsMap, otherEntity.uriVarsMap));
+		}
+
+		@Override
+		public int hashCode() {
+			return (29 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.uriTemplate));
+		}
+
 		@Override
 		public String toString() {
 			return format(getMethod(), getUriTemplate(), getBody(), getHeaders());

spring-web/src/test/java/org/springframework/http/RequestEntityTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -20,6 +20,7 @@
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -175,4 +176,37 @@ void types() throws URISyntaxException {
 		assertThat(entity.getType()).isEqualTo(typeReference.getType());
 	}
 
+	@Test
+	void equalityWithUrl() {
+		RequestEntity<Void> requestEntity1 = RequestEntity.method(HttpMethod.GET, "http://test.api/path/").build();
+		RequestEntity<Void> requestEntity2 = RequestEntity.method(HttpMethod.GET, "http://test.api/path/").build();
+		RequestEntity<Void> requestEntity3 = RequestEntity.method(HttpMethod.GET, "http://test.api/pathX/").build();
+
+		assertThat(requestEntity1).isEqualTo(requestEntity2);
+		assertThat(requestEntity2).isEqualTo(requestEntity1);
+		assertThat(requestEntity1).isNotEqualTo(requestEntity3);
+		assertThat(requestEntity3).isNotEqualTo(requestEntity2);
+		assertThat(requestEntity1.hashCode()).isEqualTo(requestEntity2.hashCode());
+		assertThat(requestEntity1.hashCode()).isNotEqualTo(requestEntity3.hashCode());
+	}
+
+	@Test  // gh-27531
+	void equalityWithUriTemplate() {
+		Map<String, Object> vars = Collections.singletonMap("id", "1");
+
+		RequestEntity<Void> requestEntity1 =
+				RequestEntity.method(HttpMethod.GET, "http://test.api/path/{id}", vars).build();
+		RequestEntity<Void> requestEntity2 =
+				RequestEntity.method(HttpMethod.GET, "http://test.api/path/{id}", vars).build();
+		RequestEntity<Void> requestEntity3 =
+				RequestEntity.method(HttpMethod.GET, "http://test.api/pathX/{id}", vars).build();
+
+		assertThat(requestEntity1).isEqualTo(requestEntity2);
+		assertThat(requestEntity2).isEqualTo(requestEntity1);
+		assertThat(requestEntity1).isNotEqualTo(requestEntity3);
+		assertThat(requestEntity3).isNotEqualTo(requestEntity2);
+		assertThat(requestEntity1.hashCode()).isEqualTo(requestEntity2.hashCode());
+		assertThat(requestEntity1.hashCode()).isNotEqualTo(requestEntity3.hashCode());
+	}
+
 }