Polish "Fix handling of static resource jars with spaces in their paths"

Closes gh-11991

spring-boot-integration-tests/spring-boot-integration-tests-embedded-servlet-container/src/test/java/org/springframework/boot/context/embedded/IdeApplicationLauncher.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -40,7 +40,7 @@ import org.springframework.util.StringUtils;
  */
 class IdeApplicationLauncher extends AbstractApplicationLauncher {
 
-	private final File exploded = new File("target/ide");
+	private final File exploded = new File("target/ide application");
 
 	IdeApplicationLauncher(ApplicationBuilder applicationBuilder) {
 		super(applicationBuilder);

spring-boot/src/main/java/org/springframework/boot/context/embedded/AbstractEmbeddedServletContainerFactory.java

@@ -18,6 +18,7 @@ package org.springframework.boot.context.embedded;
 
 import java.io.File;
 import java.io.IOException;
+import java.io.UnsupportedEncodingException;
 import java.net.JarURLConnection;
 import java.net.URL;
 import java.net.URLClassLoader;
@@ -97,7 +98,7 @@ public abstract class AbstractEmbeddedServletContainerFactory
 		List<URL> staticResourceUrls = new ArrayList<URL>();
 		if (classLoader instanceof URLClassLoader) {
 			for (URL url : ((URLClassLoader) classLoader).getURLs()) {
-				if (isStaticResource(url)) {
+				if (isStaticResourceJar(url)) {
 					staticResourceUrls.add(url);
 				}
 			}
@@ -105,39 +106,45 @@ public abstract class AbstractEmbeddedServletContainerFactory
 		return staticResourceUrls;
 	}
 
-	protected boolean isStaticResource(URL url) {
+	private boolean isStaticResourceJar(URL url) {
 		try {
 			if ("file".equals(url.getProtocol())) {
-				File file = new File(URLDecoder.decode(url.getFile(), "UTF-8"));
-				if (file.isDirectory()
-						&& new File(file, "META-INF/resources").isDirectory()) {
-					return true;
-				}
-				else if (isResourcesJar(file)) {
-					return true;
-				}
+				File file = new File(getDecodedFile(url), "UTF-8");
+				return (file.isDirectory()
+						&& new File(file, "META-INF/resources").isDirectory())
+						|| isResourcesJar(file);
 			}
 			else {
 				URLConnection connection = url.openConnection();
-				if (connection instanceof JarURLConnection) {
-					if (isResourcesJar((JarURLConnection) connection)) {
+				if (connection instanceof JarURLConnection
+						&& isResourcesJar((JarURLConnection) connection)) {
 					return true;
 				}
 			}
 		}
-		}
 		catch (IOException ex) {
 			throw new IllegalStateException(ex);
 		}
 		return false;
 	}
 
+	protected final String getDecodedFile(URL url) {
+		try {
+			return URLDecoder.decode(url.getFile(), "UTF-8");
+		}
+		catch (UnsupportedEncodingException ex) {
+			throw new IllegalStateException(
+					"Failed to decode '" + url.getFile() + "' using UTF-8");
+		}
+	}
+
 	private boolean isResourcesJar(JarURLConnection connection) {
 		try {
 			return isResourcesJar(connection.getJarFile());
 		}
 		catch (IOException ex) {
-			logger.warn("Unable to open jar to determine if it contains static resources", ex);
+			this.logger.warn("Unable to open jar from connection '" + connection
+					+ "' to determine if it contains static resources", ex);
 			return false;
 		}
 	}
@@ -147,7 +154,8 @@ public abstract class AbstractEmbeddedServletContainerFactory
 			return file.getName().endsWith(".jar") && isResourcesJar(new JarFile(file));
 		}
 		catch (IOException ex) {
-			logger.warn("Unable to open jar to determine if it contains static resources", ex);
+			this.logger.warn("Unable to open jar '" + file
+					+ "' to determine if it contains static resources", ex);
 			return false;
 		}
 	}

spring-boot/src/main/java/org/springframework/boot/context/embedded/jetty/JettyEmbeddedServletContainerFactory.java

@@ -433,7 +433,7 @@ public class JettyEmbeddedServletContainerFactory
 
 	private Resource createResource(URL url) throws IOException {
 		if ("file".equals(url.getProtocol())) {
-			File file = new File(url.getFile());
+			File file = new File(getDecodedFile(url));
 			if (file.isFile()) {
 				return Resource.newResource("jar:" + url + "!/META-INF/resources");
 			}

spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatResources.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -16,9 +16,11 @@
 
 package org.springframework.boot.context.embedded.tomcat;
 
+import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Method;
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.net.URLDecoder;
 import java.util.List;
 
 import javax.naming.directory.DirContext;
@@ -47,7 +49,7 @@ abstract class TomcatResources {
 
 	void addResourceJars(List<URL> resourceJarUrls) {
 		for (URL url : resourceJarUrls) {
-			String file = url.getFile();
+			String file = getDecodedFile(url);
 			if (file.endsWith(".jar") || file.endsWith(".jar!/")) {
 				String jar = url.toString();
 				if (!jar.startsWith("jar:")) {
@@ -62,6 +64,16 @@ abstract class TomcatResources {
 		}
 	}
 
+	private String getDecodedFile(URL url) {
+		try {
+			return URLDecoder.decode(url.getFile(), "UTF-8");
+		}
+		catch (UnsupportedEncodingException ex) {
+			throw new IllegalStateException(
+					"Failed to decode '" + url.getFile() + "' using UTF-8");
+		}
+	}
+
 	protected final Context getContext() {
 		return this.context;
 	}

spring-boot/src/main/java/org/springframework/boot/context/embedded/undertow/UndertowEmbeddedServletContainerFactory.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -494,7 +494,7 @@ public class UndertowEmbeddedServletContainerFactory
 		resourceManagers.add(rootResourceManager);
 		for (URL url : metaInfResourceUrls) {
 			if ("file".equals(url.getProtocol())) {
-				File file = new File(url.getFile());
+				File file = new File(getDecodedFile(url));
 				if (file.isFile()) {
 					try {
 						resourceJarUrls.add(new URL("jar:" + url + "!/"));

spring-boot/src/test/java/org/springframework/boot/context/embedded/AbstractEmbeddedServletContainerFactoryTests.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.boot.context.embedded;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.FileWriter;
 import java.io.FilenameFilter;
 import java.io.IOException;
@@ -50,8 +49,6 @@ import java.util.Set;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicReference;
-import java.util.jar.JarEntry;
-import java.util.jar.JarOutputStream;
 import java.util.zip.GZIPInputStream;
 
 import javax.net.ssl.SSLContext;
@@ -1038,54 +1035,6 @@ public abstract class AbstractEmbeddedServletContainerFactoryTests {
 		assertThat(documentRoot).isNull();
 	}
 
-	@Test
-	public void includeJarWithStaticResources() throws Exception {
-		AbstractEmbeddedServletContainerFactory factory = getFactory();
-		File jarFile = this.temporaryFolder.newFile("test.jar");
-		JarOutputStream jarOutputStream = new JarOutputStream(new FileOutputStream(jarFile));
-		JarEntry jarEntry = new JarEntry("META-INF/resources");
-		jarOutputStream.putNextEntry(jarEntry);
-		jarOutputStream.closeEntry();
-		jarOutputStream.close();
-		String path = "file:" + jarFile.getAbsolutePath();
-
-		boolean isStaticResource = factory.isStaticResource(new URL(path));
-
-		assertThat(isStaticResource).isTrue();
-	}
-
-	@Test
-	public void includeJarWithStaticResourcesWithUrlEncodedSpaces() throws Exception {
-		AbstractEmbeddedServletContainerFactory factory = getFactory();
-		this.temporaryFolder.newFolder("test parent");
-		File jarFile = this.temporaryFolder.newFile("test parent/test.jar");
-		JarOutputStream jarOutputStream = new JarOutputStream(new FileOutputStream(jarFile));
-		JarEntry jarEntry = new JarEntry("META-INF/resources");
-		jarOutputStream.putNextEntry(jarEntry);
-		jarOutputStream.closeEntry();
-		jarOutputStream.close();
-		String path = "file:" + jarFile.getAbsolutePath().replaceAll(" ", "%20");
-
-		boolean isStaticResource = factory.isStaticResource(new URL(path));
-
-		assertThat(isStaticResource).isTrue();
-	}
-
-	@Test
-	public void excludeJarWithoutStaticResources() throws Exception {
-		AbstractEmbeddedServletContainerFactory factory = getFactory();
-		File jarFile = this.temporaryFolder.newFile("test.jar");
-		JarOutputStream jarOutputStream = new JarOutputStream(
-				new FileOutputStream(jarFile));
-		jarOutputStream.closeEntry();
-		jarOutputStream.close();
-		String path = "file:" + jarFile.getAbsolutePath();
-
-		boolean isStaticResource = factory.isStaticResource(new URL(path));
-
-		assertThat(isStaticResource).isFalse();
-	}
-
 	protected abstract void addConnector(int port,
 			AbstractEmbeddedServletContainerFactory factory);