diff --git a/spring-core/src/test/java/org/springframework/util/xml/AbstractStaxHandlerTestCase.java b/spring-core/src/test/java/org/springframework/util/xml/AbstractStaxHandlerTestCase.java
index b2500f3490..05a8e1d9d4 100644
--- a/spring-core/src/test/java/org/springframework/util/xml/AbstractStaxHandlerTestCase.java
+++ b/spring-core/src/test/java/org/springframework/util/xml/AbstractStaxHandlerTestCase.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -18,7 +18,6 @@ package org.springframework.util.xml;
 
 import java.io.StringReader;
 import java.io.StringWriter;
-import java.net.Socket;
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.stream.XMLStreamException;
@@ -26,7 +25,6 @@ import javax.xml.transform.Result;
 import javax.xml.transform.dom.DOMResult;
 import javax.xml.transform.stream.StreamResult;
 
-import org.junit.Assume;
 import org.junit.Before;
 import org.junit.Test;
 import org.w3c.dom.Document;
@@ -36,7 +34,7 @@ import org.xml.sax.XMLReader;
 import org.xmlunit.util.Predicate;
 
 import static org.junit.Assert.*;
-import static org.xmlunit.matchers.CompareMatcher.*;
+import static org.xmlunit.matchers.CompareMatcher.isSimilarTo;
 
 /**
  * @author Arjen Poutsma
@@ -66,13 +64,12 @@ public abstract class AbstractStaxHandlerTestCase {
 	@SuppressWarnings("deprecation")  // on JDK 9
 	public void createXMLReader() throws Exception {
 		xmlReader = org.xml.sax.helpers.XMLReaderFactory.createXMLReader();
+		xmlReader.setEntityResolver((publicId, systemId) -> new InputSource(new StringReader("")));
 	}
 
 
 	@Test
 	public void noNamespacePrefixes() throws Exception {
-		Assume.assumeTrue(wwwSpringframeworkOrgIsAccessible());
-
 		StringWriter stringWriter = new StringWriter();
 		AbstractStaxHandler handler = createStaxHandler(new StreamResult(stringWriter));
 		xmlReader.setContentHandler(handler);
@@ -86,20 +83,8 @@ public abstract class AbstractStaxHandlerTestCase {
 		assertThat(stringWriter.toString(), isSimilarTo(COMPLEX_XML).withNodeFilter(nodeFilter));
 	}
 
-	private static boolean wwwSpringframeworkOrgIsAccessible() {
-		try {
-			new Socket("www.springframework.org", 80).close();
-		}
-		catch (Exception e) {
-			return false;
-		}
-		return true;
-	}
-
 	@Test
 	public void namespacePrefixes() throws Exception {
-		Assume.assumeTrue(wwwSpringframeworkOrgIsAccessible());
-
 		StringWriter stringWriter = new StringWriter();
 		AbstractStaxHandler handler = createStaxHandler(new StreamResult(stringWriter));
 		xmlReader.setContentHandler(handler);