Add additional ElementExcludeFilter items

Fixes gh-2088

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessor.java

@@ -179,7 +179,8 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 			VariableElement field = members.getFields().get(name);
 			Element returnType = this.processingEnv.getTypeUtils().asElement(
 					getter.getReturnType());
-			boolean isExcluded = this.elementExcludeFilter.isExcluded(returnType);
+			boolean isExcluded = this.elementExcludeFilter.isExcluded(getter
+					.getReturnType());
 			boolean isNested = isNested(returnType, field, element);
 			boolean isCollection = this.typeUtils.isCollectionOrMap(getter
 					.getReturnType());

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ElementExcludeFilter.java

@@ -19,7 +19,7 @@ package org.springframework.boot.configurationprocessor;
 import java.util.HashSet;
 import java.util.Set;
 
-import javax.lang.model.element.Element;
+import javax.lang.model.type.TypeMirror;
 
 /**
  * Filter to excluded elements that don't make sense to process.
@@ -34,19 +34,32 @@ class ElementExcludeFilter {
 	public ElementExcludeFilter() {
 		add("java.io.Writer");
 		add("java.io.PrintWriter");
-		add("javax.sql.DataSource");
 		add("java.lang.ClassLoader");
+		add("java.util.concurrent.ThreadFactory");
+		add("javax.sql.DataSource");
+		add("com.zaxxer.hikari.IConnectionCustomizer");
+		add("groovy.text.markup.MarkupTemplateEngine");
+		add("org.apache.tomcat.jdbc.pool.PoolConfiguration");
+		add("org.apache.tomcat.jdbc.pool.Validator");
+		add("org.flywaydb.core.api.MigrationVersion");
+		add("org.flywaydb.core.api.callback.FlywayCallback");
+		add("org.flywaydb.core.api.resolver.MigrationResolver");
+		add("org.springframework.http.MediaType");
 	}
 
 	private void add(String className) {
 		this.excludes.add(className);
 	}
 
-	public boolean isExcluded(Element element) {
-		if (element == null) {
+	public boolean isExcluded(TypeMirror type) {
+		if (type == null) {
 			return false;
 		}
-		return this.excludes.contains(element.toString());
+		String typeName = type.toString();
+		if (typeName.endsWith("[]")) {
+			typeName = typeName.substring(0, typeName.length() - 2);
+		}
+		return this.excludes.contains(typeName);
 	}
 
 }

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessorTests.java

@@ -283,6 +283,7 @@ public class ConfigurationMetadataAnnotationProcessorTests {
 		assertThat(metadata, not(containsProperty("excluded.data-source")));
 		assertThat(metadata, not(containsProperty("excluded.print-writer")));
 		assertThat(metadata, not(containsProperty("excluded.writer")));
+		assertThat(metadata, not(containsProperty("excluded.writer-array")));
 	}
 
 	private ConfigurationMetadata compile(Class<?>... types) throws IOException {

spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationsample/specific/ExcludedTypesPojo.java

@@ -42,6 +42,8 @@ public class ExcludedTypesPojo {
 
 	private Writer writer;
 
+	private Writer[] writerArray;
+
 	public String getName() {
 		return this.name;
 	}
@@ -82,4 +84,12 @@ public class ExcludedTypesPojo {
 		this.writer = writer;
 	}
 
+	public Writer[] getWriterArray() {
+		return this.writerArray;
+	}
+
+	public void setWriterArray(Writer[] writerArray) {
+		this.writerArray = writerArray;
+	}
+
 }