Exclude spring-data-rest package from being stored

Update AutoConfigurationUtils to specifically exclude spring-data-rest
packages from being stored. This prevent missing class errors caused
when Spring Boot attempts to use @ComponentScan packages as the source
for JPA entities and reads annotations that are not on the classpath.

Issue: #55489346

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationUtils.java

@@ -18,7 +18,9 @@ package org.springframework.boot.autoconfigure;
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
@@ -36,6 +38,13 @@ public abstract class AutoConfigurationUtils {
 	private static final String BASE_PACKAGES_BEAN = AutoConfigurationUtils.class
 			.getName() + ".basePackages";
 
+	private static Set<String> EXCLUDED_PACKAGES;
+	static {
+		Set<String> exclude = new HashSet<String>();
+		exclude.add("org.springframework.data.rest.webmvc");
+		EXCLUDED_PACKAGES = Collections.unmodifiableSet(exclude);
+	}
+
 	@SuppressWarnings("unchecked")
 	public static List<String> getBasePackages(BeanFactory beanFactory) {
 		try {
@@ -49,17 +58,14 @@ public abstract class AutoConfigurationUtils {
 	public static void storeBasePackages(ConfigurableListableBeanFactory beanFactory,
 			List<String> basePackages) {
 		if (!beanFactory.containsBean(BASE_PACKAGES_BEAN)) {
-			beanFactory.registerSingleton(BASE_PACKAGES_BEAN, new ArrayList<String>(
-					basePackages));
+			beanFactory.registerSingleton(BASE_PACKAGES_BEAN, new ArrayList<String>());
 		}
-		else {
-			List<String> packages = getBasePackages(beanFactory);
-			for (String pkg : basePackages) {
-				if (packages.contains(pkg)) {
-					packages.add(pkg);
-				}
+		List<String> storePackages = getBasePackages(beanFactory);
+		for (String basePackage : basePackages) {
+			if (!EXCLUDED_PACKAGES.contains(basePackage)
+					&& !storePackages.contains(basePackage)) {
+				storePackages.add(basePackage);
 			}
 		}
 	}
-
 }

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/AutoConfigurationUtilsTests.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2012-2013 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link AutoConfigurationUtils}.
+ * 
+ * @author Phillip Webb
+ */
+public class AutoConfigurationUtilsTests {
+
+	private ConfigurableListableBeanFactory beanFactory;
+
+	@Before
+	public void setup() {
+		this.beanFactory = new DefaultListableBeanFactory();
+	}
+
+	@Test
+	public void storeAndGetBasePackages() throws Exception {
+		List<String> packageList = Arrays.asList("com.mycorp.test1", "com.mycorp.test2");
+		AutoConfigurationUtils.storeBasePackages(this.beanFactory, packageList);
+		List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
+		assertThat(actual, equalTo(packageList));
+	}
+
+	@Test
+	public void doubleAdd() throws Exception {
+		List<String> list1 = Arrays.asList("com.mycorp.test1", "com.mycorp.test2");
+		List<String> list2 = Arrays.asList("com.mycorp.test2", "com.mycorp.test3");
+		AutoConfigurationUtils.storeBasePackages(this.beanFactory, list1);
+		AutoConfigurationUtils.storeBasePackages(this.beanFactory, list2);
+		List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
+		assertThat(actual, equalTo(Arrays.asList("com.mycorp.test1", "com.mycorp.test2",
+				"com.mycorp.test3")));
+	}
+
+	@Test
+	public void excludedPackages() throws Exception {
+		List<String> packageList = Arrays.asList("com.mycorp.test1",
+				"org.springframework.data.rest.webmvc");
+		AutoConfigurationUtils.storeBasePackages(this.beanFactory, packageList);
+		List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
+		assertThat(actual, equalTo(Arrays.asList("com.mycorp.test1")));
+	}
+}