Consistently throw FileNotFoundException even for NIO access

Issue: SPR-16334

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -26,6 +26,7 @@ import java.net.URL;
 import java.net.URLConnection;
 import java.nio.channels.FileChannel;
 import java.nio.channels.ReadableByteChannel;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.StandardOpenOption;
 
 import org.springframework.util.ResourceUtils;
@@ -42,6 +43,68 @@ import org.springframework.util.ResourceUtils;
  */
 public abstract class AbstractFileResolvingResource extends AbstractResource {
 
+	@Override
+	public boolean exists() {
+		try {
+			URL url = getURL();
+			if (ResourceUtils.isFileURL(url)) {
+				// Proceed with file system resolution
+				return getFile().exists();
+			}
+			else {
+				// Try a URL connection content-length header
+				URLConnection con = url.openConnection();
+				customizeConnection(con);
+				HttpURLConnection httpCon =
+						(con instanceof HttpURLConnection ? (HttpURLConnection) con : null);
+				if (httpCon != null) {
+					int code = httpCon.getResponseCode();
+					if (code == HttpURLConnection.HTTP_OK) {
+						return true;
+					}
+					else if (code == HttpURLConnection.HTTP_NOT_FOUND) {
+						return false;
+					}
+				}
+				if (con.getContentLength() >= 0) {
+					return true;
+				}
+				if (httpCon != null) {
+					// no HTTP OK status, and no content-length header: give up
+					httpCon.disconnect();
+					return false;
+				}
+				else {
+					// Fall back to stream existence: can we open the stream?
+					InputStream is = getInputStream();
+					is.close();
+					return true;
+				}
+			}
+		}
+		catch (IOException ex) {
+			return false;
+		}
+	}
+
+	@Override
+	public boolean isReadable() {
+		try {
+			URL url = getURL();
+			if (ResourceUtils.isFileURL(url)) {
+				// Proceed with file system resolution
+				File file = getFile();
+				return (file.canRead() && !file.isDirectory());
+			}
+			else {
+				return true;
+			}
+		}
+		catch (IOException ex) {
+			return false;
+		}
+	}
+
 	@Override
 	public boolean isFile() {
 		try {
@@ -123,81 +186,20 @@ public abstract class AbstractFileResolvingResource extends AbstractResource {
 	 * This implementation returns a FileChannel for the given URI-identified
 	 * resource, provided that it refers to a file in the file system.
 	 * @since 5.0
-	 * @see #getFile(URI)
+	 * @see #getFile()
 	 */
 	@Override
 	public ReadableByteChannel readableChannel() throws IOException {
-		if (isFile()) {
+		try {
+			// Try file system channel
 			return FileChannel.open(getFile().toPath(), StandardOpenOption.READ);
 		}
-		else {
+		catch (FileNotFoundException | NoSuchFileException ex) {
+			// Fall back to InputStream adaptation in superclass
 			return super.readableChannel();
 		}
 	}
 
-
-	@Override
-	public boolean exists() {
-		try {
-			URL url = getURL();
-			if (ResourceUtils.isFileURL(url)) {
-				// Proceed with file system resolution
-				return getFile().exists();
-			}
-			else {
-				// Try a URL connection content-length header
-				URLConnection con = url.openConnection();
-				customizeConnection(con);
-				HttpURLConnection httpCon =
-						(con instanceof HttpURLConnection ? (HttpURLConnection) con : null);
-				if (httpCon != null) {
-					int code = httpCon.getResponseCode();
-					if (code == HttpURLConnection.HTTP_OK) {
-						return true;
-					}
-					else if (code == HttpURLConnection.HTTP_NOT_FOUND) {
-						return false;
-					}
-				}
-				if (con.getContentLength() >= 0) {
-					return true;
-				}
-				if (httpCon != null) {
-					// no HTTP OK status, and no content-length header: give up
-					httpCon.disconnect();
-					return false;
-				}
-				else {
-					// Fall back to stream existence: can we open the stream?
-					InputStream is = getInputStream();
-					is.close();
-					return true;
-				}
-			}
-		}
-		catch (IOException ex) {
-			return false;
-		}
-	}
-
-	@Override
-	public boolean isReadable() {
-		try {
-			URL url = getURL();
-			if (ResourceUtils.isFileURL(url)) {
-				// Proceed with file system resolution
-				File file = getFile();
-				return (file.canRead() && !file.isDirectory());
-			}
-			else {
-				return true;
-			}
-		}
-		catch (IOException ex) {
-			return false;
-		}
-	}
-
 	@Override
 	public long contentLength() throws IOException {
 		URL url = getURL();
@@ -231,7 +233,6 @@ public abstract class AbstractFileResolvingResource extends AbstractResource {
 		return con.getLastModified();
 	}
 
-
 	/**
 	 * Customize the given {@link URLConnection}, obtained in the course of an
 	 * {@link #exists()}, {@link #contentLength()} or {@link #lastModified()} call.

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -17,6 +17,7 @@
 package org.springframework.core.io;
 
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -26,6 +27,7 @@ import java.nio.channels.FileChannel;
 import java.nio.channels.ReadableByteChannel;
 import java.nio.channels.WritableByteChannel;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.StandardOpenOption;
 
 import org.springframework.util.Assert;
@@ -115,12 +117,17 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	}
 
 	/**
-	 * This implementation opens a FileInputStream for the underlying file.
+	 * This implementation opens a NIO file stream for the underlying file.
 	 * @see java.io.FileInputStream
 	 */
 	@Override
 	public InputStream getInputStream() throws IOException {
-		return Files.newInputStream(this.file.toPath());
+		try {
+			return Files.newInputStream(this.file.toPath());
+		}
+		catch (NoSuchFileException ex) {
+			throw new FileNotFoundException(ex.getMessage());
+		}
 	}
 
 	/**
@@ -183,7 +190,12 @@ public class FileSystemResource extends AbstractResource implements WritableReso
 	 */
 	@Override
 	public ReadableByteChannel readableChannel() throws IOException {
-		return FileChannel.open(this.file.toPath(), StandardOpenOption.READ);
+		try {
+			return FileChannel.open(this.file.toPath(), StandardOpenOption.READ);
+		}
+		catch (NoSuchFileException ex) {
+			throw new FileNotFoundException(ex.getMessage());
+		}
 	}
 
 	/**

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -26,11 +26,13 @@ import java.nio.channels.WritableByteChannel;
 import java.nio.file.Files;
 import java.nio.file.StandardOpenOption;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.ResourceUtils;
 
 /**
  * Subclass of {@link UrlResource} which assumes file resolution, to the degree
- * of implementing the {@link WritableResource} interface for it.
+ * of implementing the {@link WritableResource} interface for it. This resource
+ * variant also caches resolved {@link File} handles from {@link #getFile()}.
  *
  * <p>This is the class resolved by {@link DefaultResourceLoader} for a "file:..."
  * URL location, allowing a downcast to {@link WritableResource} for it.
@@ -44,6 +46,10 @@ import org.springframework.util.ResourceUtils;
  */
 public class FileUrlResource extends UrlResource implements WritableResource {
 
+	@Nullable
+	private volatile File file;
+
+
 	/**
 	 * Create a new {@code FileUrlResource} based on the given URL object.
 	 * <p>Note that this does not enforce "file" as URL protocol. If a protocol
@@ -71,11 +77,14 @@ public class FileUrlResource extends UrlResource implements WritableResource {
 
 
 	@Override
-	public Resource createRelative(String relativePath) throws MalformedURLException {
-		if (relativePath.startsWith("/")) {
-			relativePath = relativePath.substring(1);
+	public File getFile() throws IOException {
+		File file = this.file;
+		if (file != null) {
+			return file;
 		}
-		return new FileUrlResource(new URL(getURL(), relativePath));
+		file = super.getFile();
+		this.file = file;
+		return file;
 	}
 
 	@Override
@@ -106,4 +115,12 @@ public class FileUrlResource extends UrlResource implements WritableResource {
 		return FileChannel.open(getFile().toPath(), StandardOpenOption.WRITE);
 	}
 
+	@Override
+	public Resource createRelative(String relativePath) throws MalformedURLException {
+		if (relativePath.startsWith("/")) {
+			relativePath = relativePath.substring(1);
+		}
+		return new FileUrlResource(new URL(getURL(), relativePath));
+	}
+
 }

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -26,6 +26,7 @@ import java.net.URL;
 import java.nio.channels.ReadableByteChannel;
 import java.nio.channels.WritableByteChannel;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.OpenOption;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -202,7 +203,12 @@ public class PathResource extends AbstractResource implements WritableResource {
 	 */
 	@Override
 	public ReadableByteChannel readableChannel() throws IOException {
-		return Files.newByteChannel(this.path, StandardOpenOption.READ);
+		try {
+			return Files.newByteChannel(this.path, StandardOpenOption.READ);
+		}
+		catch (NoSuchFileException ex) {
+			throw new FileNotFoundException(ex.getMessage());
+		}
 	}
 
 	/**
@@ -215,7 +221,7 @@ public class PathResource extends AbstractResource implements WritableResource {
 	}
 
 	/**
-	 * This implementation returns the underlying File's length.
+	 * This implementation returns the underlying file's length.
 	 */
 	@Override
 	public long contentLength() throws IOException {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -18,13 +18,13 @@ package org.springframework.core.io;
 
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.net.URI;
 import java.nio.ByteBuffer;
 import java.nio.channels.ReadableByteChannel;
 import java.nio.channels.WritableByteChannel;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.AccessDeniedException;
-import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 
@@ -75,136 +75,136 @@ public class PathResourceTests {
 
 
 	@Test
-	public void nullPath() throws Exception {
+	public void nullPath() {
 		thrown.expect(IllegalArgumentException.class);
 		thrown.expectMessage("Path must not be null");
 		new PathResource((Path) null);
 	}
 
 	@Test
-	public void nullPathString() throws Exception {
+	public void nullPathString() {
 		thrown.expect(IllegalArgumentException.class);
 		thrown.expectMessage("Path must not be null");
 		new PathResource((String) null);
 	}
 
 	@Test
-	public void nullUri() throws Exception {
+	public void nullUri() {
 		thrown.expect(IllegalArgumentException.class);
 		thrown.expectMessage("URI must not be null");
 		new PathResource((URI) null);
 	}
 
 	@Test
-	public void createFromPath() throws Exception {
+	public void createFromPath() {
 		Path path = Paths.get(TEST_FILE);
 		PathResource resource = new PathResource(path);
 		assertThat(resource.getPath(), equalTo(TEST_FILE));
 	}
 
 	@Test
-	public void createFromString() throws Exception {
+	public void createFromString() {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getPath(), equalTo(TEST_FILE));
 	}
 
 	@Test
-	public void createFromUri() throws Exception {
+	public void createFromUri() {
 		File file = new File(TEST_FILE);
 		PathResource resource = new PathResource(file.toURI());
 		assertThat(resource.getPath(), equalTo(file.getAbsoluteFile().toString()));
 	}
 
 	@Test
-	public void getPathForFile() throws Exception {
+	public void getPathForFile() {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getPath(), equalTo(TEST_FILE));
 	}
 
 	@Test
-	public void getPathForDir() throws Exception {
+	public void getPathForDir() {
 		PathResource resource = new PathResource(TEST_DIR);
 		assertThat(resource.getPath(), equalTo(TEST_DIR));
 	}
 
 	@Test
-	public void fileExists() throws Exception {
+	public void fileExists() {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.exists(), equalTo(true));
 	}
 
 	@Test
-	public void dirExists() throws Exception {
+	public void dirExists() {
 		PathResource resource = new PathResource(TEST_DIR);
 		assertThat(resource.exists(), equalTo(true));
 	}
 
 	@Test
-	public void fileDoesNotExist() throws Exception {
+	public void fileDoesNotExist() {
 		PathResource resource = new PathResource(NON_EXISTING_FILE);
 		assertThat(resource.exists(), equalTo(false));
 	}
 
 	@Test
-	public void fileIsReadable() throws Exception {
+	public void fileIsReadable() {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.isReadable(), equalTo(true));
 	}
 
 	@Test
-	public void doesNotExistIsNotReadable() throws Exception {
+	public void doesNotExistIsNotReadable() {
 		PathResource resource = new PathResource(NON_EXISTING_FILE);
 		assertThat(resource.isReadable(), equalTo(false));
 	}
 
 	@Test
-	public void directoryIsNotReadable() throws Exception {
+	public void directoryIsNotReadable() {
 		PathResource resource = new PathResource(TEST_DIR);
 		assertThat(resource.isReadable(), equalTo(false));
 	}
 
 	@Test
-	public void getInputStream() throws Exception {
+	public void getInputStream() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		byte[] bytes = FileCopyUtils.copyToByteArray(resource.getInputStream());
 		assertThat(bytes.length, greaterThan(0));
 	}
 
 	@Test
-	public void getInputStreamForDir() throws Exception {
+	public void getInputStreamForDir() throws IOException {
 		PathResource resource = new PathResource(TEST_DIR);
 		thrown.expect(FileNotFoundException.class);
 		resource.getInputStream();
 	}
 
 	@Test
-	public void getInputStreamDoesNotExist() throws Exception {
+	public void getInputStreamDoesNotExist() throws IOException {
 		PathResource resource = new PathResource(NON_EXISTING_FILE);
 		thrown.expect(FileNotFoundException.class);
 		resource.getInputStream();
 	}
 
 	@Test
-	public void getUrl() throws Exception {
+	public void getUrl() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getURL().toString(), Matchers.endsWith("core/io/example.properties"));
 	}
 
 	@Test
-	public void getUri() throws Exception {
+	public void getUri() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getURI().toString(), Matchers.endsWith("core/io/example.properties"));
 	}
 
 	@Test
-	public void getFile() throws Exception {
+	public void getFile() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		File file = new File(TEST_FILE);
 		assertThat(resource.getFile().getAbsoluteFile(), equalTo(file.getAbsoluteFile()));
 	}
 
 	@Test
-	public void getFileUnsupported() throws Exception {
+	public void getFileUnsupported() throws IOException {
 		Path path = mock(Path.class);
 		given(path.normalize()).willReturn(path);
 		given(path.toFile()).willThrow(new UnsupportedOperationException());
@@ -214,72 +214,72 @@ public class PathResourceTests {
 	}
 
 	@Test
-	public void contentLength() throws Exception {
+	public void contentLength() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		File file = new File(TEST_FILE);
 		assertThat(resource.contentLength(), equalTo(file.length()));
 	}
 
 	@Test
-	public void contentLengthForDirectory() throws Exception {
+	public void contentLengthForDirectory() throws IOException {
 		PathResource resource = new PathResource(TEST_DIR);
 		File file = new File(TEST_DIR);
 		assertThat(resource.contentLength(), equalTo(file.length()));
 	}
 
 	@Test
-	public void lastModified() throws Exception {
+	public void lastModified() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		File file = new File(TEST_FILE);
 		assertThat(resource.lastModified() / 1000, equalTo(file.lastModified() / 1000));
 	}
 
 	@Test
-	public void createRelativeFromDir() throws Exception {
+	public void createRelativeFromDir() throws IOException {
 		Resource resource = new PathResource(TEST_DIR).createRelative("example.properties");
 		assertThat(resource, equalTo((Resource) new PathResource(TEST_FILE)));
 	}
 
 	@Test
-	public void createRelativeFromFile() throws Exception {
+	public void createRelativeFromFile() throws IOException {
 		Resource resource = new PathResource(TEST_FILE).createRelative("../example.properties");
 		assertThat(resource, equalTo((Resource) new PathResource(TEST_FILE)));
 	}
 
 	@Test
-	public void filename() throws Exception {
+	public void filename() {
 		Resource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getFilename(), equalTo("example.properties"));
 	}
 
 	@Test
-	public void description() throws Exception {
+	public void description() {
 		Resource resource = new PathResource(TEST_FILE);
 		assertThat(resource.getDescription(), containsString("path ["));
 		assertThat(resource.getDescription(), containsString(TEST_FILE));
 	}
 
 	@Test
-	public void fileIsWritable() throws Exception {
+	public void fileIsWritable() {
 		PathResource resource = new PathResource(TEST_FILE);
 		assertThat(resource.isWritable(), equalTo(true));
 	}
 
 	@Test
-	public void directoryIsNotWritable() throws Exception {
+	public void directoryIsNotWritable() {
 		PathResource resource = new PathResource(TEST_DIR);
 		assertThat(resource.isWritable(), equalTo(false));
 	}
 
 	@Test
-	public void outputStream() throws Exception {
+	public void outputStream() throws IOException {
 		PathResource resource = new PathResource(temporaryFolder.newFile("test").toPath());
 		FileCopyUtils.copy("test".getBytes(StandardCharsets.UTF_8), resource.getOutputStream());
 		assertThat(resource.contentLength(), equalTo(4L));
 	}
 
 	@Test
-	public void doesNotExistOutputStream() throws Exception {
+	public void doesNotExistOutputStream() throws IOException {
 		File file = temporaryFolder.newFile("test");
 		file.delete();
 		PathResource resource = new PathResource(file.toPath());
@@ -288,14 +288,14 @@ public class PathResourceTests {
 	}
 
 	@Test
-	public void directoryOutputStream() throws Exception {
+	public void directoryOutputStream() throws IOException {
 		PathResource resource = new PathResource(TEST_DIR);
 		thrown.expect(FileNotFoundException.class);
 		resource.getOutputStream();
 	}
 
 	@Test
-	public void getReadableByteChannel() throws Exception {
+	public void getReadableByteChannel() throws IOException {
 		PathResource resource = new PathResource(TEST_FILE);
 		ReadableByteChannel channel = null;
 		try {
@@ -313,7 +313,7 @@ public class PathResourceTests {
 	}
 
 	@Test
-	public void getReadableByteChannelForDir() throws Exception {
+	public void getReadableByteChannelForDir() throws IOException {
 		PathResource resource = new PathResource(TEST_DIR);
 		try {
 			resource.readableChannel();
@@ -324,14 +324,14 @@ public class PathResourceTests {
 	}
 
 	@Test
-	public void getReadableByteChannelDoesNotExist() throws Exception {
+	public void getReadableByteChannelDoesNotExist() throws IOException {
 		PathResource resource = new PathResource(NON_EXISTING_FILE);
-		thrown.expect(NoSuchFileException.class);
+		thrown.expect(FileNotFoundException.class);
 		resource.readableChannel();
 	}
 
 	@Test
-	public void getWritableChannel() throws Exception {
+	public void getWritableChannel() throws IOException {
 		PathResource resource = new PathResource(temporaryFolder.newFile("test").toPath());
 		ByteBuffer buffer = ByteBuffer.wrap("test".getBytes(StandardCharsets.UTF_8));
 		WritableByteChannel channel = null;

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -201,8 +201,8 @@ public class ResourceTests {
 				return name;
 			}
 			@Override
-			public InputStream getInputStream() {
-				return null;
+			public InputStream getInputStream() throws IOException {
+				throw new FileNotFoundException();
 			}
 		};
 
@@ -211,21 +211,21 @@ public class ResourceTests {
 			fail("FileNotFoundException should have been thrown");
 		}
 		catch (FileNotFoundException ex) {
-			assertTrue(ex.getMessage().indexOf(name) != -1);
+			assertTrue(ex.getMessage().contains(name));
 		}
 		try {
 			resource.getFile();
 			fail("FileNotFoundException should have been thrown");
 		}
 		catch (FileNotFoundException ex) {
-			assertTrue(ex.getMessage().indexOf(name) != -1);
+			assertTrue(ex.getMessage().contains(name));
 		}
 		try {
 			resource.createRelative("/testing");
 			fail("FileNotFoundException should have been thrown");
 		}
 		catch (FileNotFoundException ex) {
-			assertTrue(ex.getMessage().indexOf(name) != -1);
+			assertTrue(ex.getMessage().contains(name));
 		}
 
 		assertThat(resource.getFilename(), nullValue());
@@ -235,19 +235,19 @@ public class ResourceTests {
 	public void testContentLength() throws IOException {
 		AbstractResource resource = new AbstractResource() {
 			@Override
-			public InputStream getInputStream() throws IOException {
+			public InputStream getInputStream() {
 				return new ByteArrayInputStream(new byte[] { 'a', 'b', 'c' });
 			}
 			@Override
 			public String getDescription() {
-				return null;
+				return "";
 			}
 		};
 		assertThat(resource.contentLength(), is(3L));
 	}
 
 	@Test
-	public void testGetReadableByteChannel() throws IOException {
+	public void testReadableChannel() throws IOException {
 		Resource resource = new FileSystemResource(getClass().getResource("Resource.class").getFile());
 		ReadableByteChannel channel = null;
 		try {
@@ -264,4 +264,24 @@ public class ResourceTests {
 		}
 	}
 
+	@Test(expected = FileNotFoundException.class)
+	public void testInputStreamNotFoundOnFileSystemResource() throws IOException {
+		new FileSystemResource(getClass().getResource("Resource.class").getFile()).createRelative("X").getInputStream();
+	}
+
+	@Test(expected = FileNotFoundException.class)
+	public void testReadableChannelNotFoundOnFileSystemResource() throws IOException {
+		new FileSystemResource(getClass().getResource("Resource.class").getFile()).createRelative("X").readableChannel();
+	}
+
+	@Test(expected = FileNotFoundException.class)
+	public void testInputStreamNotFoundOnClassPathResource() throws IOException {
+		new ClassPathResource("Resource.class", getClass()).createRelative("X").getInputStream();
+	}
+
+	@Test(expected = FileNotFoundException.class)
+	public void testReadableChannelNotFoundOnClassPathResource() throws IOException {
+		new ClassPathResource("Resource.class", getClass()).createRelative("X").readableChannel();
+	}
+
 }