Polish "Add Basic Authorization for UrlResource"

See gh-1822

spring-core/src/main/java/org/springframework/core/io/UrlResource.java

@@ -28,10 +28,10 @@ import java.net.URL;
 import java.net.URLConnection;
 import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
+import java.util.Base64;
 
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
-import org.springframework.util.Base64Utils;
 import org.springframework.util.ResourceUtils;
 import org.springframework.util.StringUtils;
 
@@ -42,12 +42,13 @@ import org.springframework.util.StringUtils;
  *
  * @author Juergen Hoeller
  * @author Sam Brannen
- * @author Denis Kostin
  * @since 28.12.2003
  * @see java.net.URL
  */
 public class UrlResource extends AbstractFileResolvingResource {
 
+	private static final String AUTHORIZATION = "Authorization";
+
 	/**
 	 * Original URI, if available; used for URI and File access.
 	 */
@@ -227,11 +228,6 @@ public class UrlResource extends AbstractFileResolvingResource {
 	public InputStream getInputStream() throws IOException {
 		URLConnection con = this.url.openConnection();
 		customizeConnection(con);
-
-		if (this.url.getUserInfo() != null) {
-			String basicAuth = "Basic " + Base64Utils.encodeToString(url.getUserInfo().getBytes());
-			con.setRequestProperty("Authorization", basicAuth);
-		}
 		try {
 			return con.getInputStream();
 		}
@@ -244,6 +240,16 @@ public class UrlResource extends AbstractFileResolvingResource {
 		}
 	}
 
+	@Override
+	protected void customizeConnection(URLConnection con) throws IOException {
+		super.customizeConnection(con);
+		String userInfo = this.url.getUserInfo();
+		if (userInfo != null) {
+			String encodedCredentials = Base64.getUrlEncoder().encodeToString(userInfo.getBytes());
+			con.setRequestProperty(AUTHORIZATION, "Basic " + encodedCredentials);
+		}
+	}
+
 	/**
 	 * This implementation returns the underlying URL reference.
 	 */

spring-core/src/test/java/org/springframework/core/io/ResourceTests.java

@@ -33,6 +33,7 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.Base64;
 import java.util.stream.Stream;
 
 import okhttp3.mockwebserver.Dispatcher;
@@ -377,6 +378,19 @@ class ResourceTests {
 			assertThat(request.getHeader("Framework-Name")).isEqualTo("Spring");
 		}
 
+		@Test
+		void useUserInfoToSetBasicAuth() throws Exception {
+			startServer();
+			UrlResource resource = new UrlResource("http://alice:secret@localhost:"
+					+ this.server.getPort() + "/resource");
+			assertThat(resource.getInputStream()).hasContent("Spring");
+			RecordedRequest request = this.server.takeRequest();
+			String authorization = request.getHeader("Authorization");
+			assertThat(authorization).isNotNull().startsWith("Basic ");
+			assertThat(new String(Base64.getDecoder().decode(
+					authorization.substring(6)), StandardCharsets.ISO_8859_1)).isEqualTo("alice:secret");
+		}
+
 		@AfterEach
 		void shutdown() throws Exception {
 			this.server.shutdown();