| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.InputStream; |
| import java.lang.module.Configuration; |
| import java.lang.module.ResolvedModule; |
| import java.io.IOException; |
| import java.net.URL; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| /** |
| * Basic test of ClassLoader getResource and getResourceAsStream when |
| * invoked from code in named modules. |
| */ |
| |
| public class Main { |
| |
| static final String NAME = "myresource"; |
| |
| public static void main(String[] args) throws IOException { |
| |
| // create resources in m1 |
| createResource("m1", Paths.get("."), "m1"); |
| createResource("m1", Paths.get("p1"), "m1/p1"); |
| createResource("m1", Paths.get("p1", "impl"), "m1/p1.impl"); |
| createResource("m1", Paths.get("p1", "resources"), "m1/p1.resources"); |
| |
| // create resources in m2 |
| createResource("m2", Paths.get("."), "m2"); |
| createResource("m2", Paths.get("p2"), "m2/p2"); |
| createResource("m2", Paths.get("p2", "impl"), "m2/p2.impl"); |
| createResource("m2", Paths.get("p2", "resources"), "m2/p2.resources"); |
| |
| |
| // invoke ClassLoader getResource from the unnamed module |
| ClassLoader thisLoader = Main.class.getClassLoader(); |
| |
| URL url = thisLoader.getResource(NAME); |
| assertNotNull(url); |
| |
| url = thisLoader.getResource("p1/" + NAME); |
| assertNull(url); |
| |
| url = thisLoader.getResource("p1/impl/" + NAME); |
| assertNull(url); |
| |
| url = thisLoader.getResource("p1/resources/" + NAME); |
| assertEquals(readAllAsString(url), "m1/p1.resources"); |
| |
| url = thisLoader.getResource("p2/" + NAME); |
| assertNull(url); |
| |
| url = thisLoader.getResource("p2/impl/" + NAME); |
| assertNull(url); |
| |
| url = thisLoader.getResource("p2/resources/" + NAME); |
| assertNull(url); |
| |
| |
| // invoke ClassLoader getResource from module m1 |
| url = p1.Main.getResourceInClassLoader(NAME); |
| assertNotNull(url); |
| |
| url = p1.Main.getResourceInClassLoader("p1/" + NAME); |
| assertNull(url); |
| |
| url = p1.Main.getResourceInClassLoader("p1/impl/" + NAME); |
| assertNull(url); |
| |
| url = p1.Main.getResourceInClassLoader("p1/resources/" + NAME); |
| assertEquals(readAllAsString(url), "m1/p1.resources"); |
| |
| url = p1.Main.getResourceInClassLoader("p2/" + NAME); |
| assertNull(url); |
| |
| url = p1.Main.getResourceInClassLoader("p2/impl/" + NAME); |
| assertNull(url); |
| |
| url = p1.Main.getResourceInClassLoader("p2/resources/" + NAME); |
| assertNull(url); |
| |
| |
| // invoke ClassLoader getResource from module m2 |
| url = p2.Main.getResourceInClassLoader(NAME); |
| assertNotNull(url); |
| |
| url = p2.Main.getResourceInClassLoader("p1/" + NAME); |
| assertNull(url); |
| |
| url = p2.Main.getResourceInClassLoader("p1/impl/" + NAME); |
| assertNull(url); |
| |
| url = p2.Main.getResourceInClassLoader("p1/resources/" + NAME); |
| assertEquals(readAllAsString(url), "m1/p1.resources"); |
| |
| url = p2.Main.getResourceInClassLoader("p2/" + NAME); |
| assertNull(url); |
| |
| url = p2.Main.getResourceInClassLoader("p2/impl/" + NAME); |
| assertNull(url); |
| |
| url = p2.Main.getResourceInClassLoader("p2/resources/" + NAME); |
| assertNull(url); |
| |
| |
| // invoke ClassLoader getResources from the unnamed module |
| Enumeration<URL> urls = thisLoader.getResources(NAME); |
| List<String> resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 2); |
| assertTrue(resources.contains("m1")); |
| assertTrue(resources.contains("m2")); |
| |
| urls = thisLoader.getResources("p1/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = thisLoader.getResources("p1/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = thisLoader.getResources("p1/resources/" + NAME); |
| resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 1); |
| assertTrue(resources.contains("m1/p1.resources")); |
| |
| urls = thisLoader.getResources("p2/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = thisLoader.getResources("p2/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = thisLoader.getResources("p2/resources/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| |
| // invoke ClassLoader getResources from m1 |
| urls = p1.Main.getResourcesInClassLoader(NAME); |
| resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 2); |
| assertTrue(resources.contains("m1")); |
| assertTrue(resources.contains("m2")); |
| |
| urls = p1.Main.getResourcesInClassLoader("p1/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p1.Main.getResourcesInClassLoader("p1/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p1.Main.getResourcesInClassLoader("p1/resources/" + NAME); |
| resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 1); |
| assertTrue(resources.contains("m1/p1.resources")); |
| |
| urls = p1.Main.getResourcesInClassLoader("p2/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p1.Main.getResourcesInClassLoader("p2/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p1.Main.getResourcesInClassLoader("p2/resources/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| |
| // invoke ClassLoader getResources from m2 |
| urls = p2.Main.getResourcesInClassLoader(NAME); |
| resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 2); |
| assertTrue(resources.contains("m1")); |
| assertTrue(resources.contains("m2")); |
| |
| urls = p2.Main.getResourcesInClassLoader("p1/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p2.Main.getResourcesInClassLoader("p1/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p2.Main.getResourcesInClassLoader("p1/resources/" + NAME); |
| resources = readAllAsStrings(urls); |
| assertTrue(resources.size() == 1); |
| assertTrue(resources.contains("m1/p1.resources")); |
| |
| urls = p2.Main.getResourcesInClassLoader("p2/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p2.Main.getResourcesInClassLoader("p2/impl/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| urls = p2.Main.getResourcesInClassLoader("p2/resources/" + NAME); |
| assertTrue(readAllAsStrings(urls).isEmpty()); |
| |
| |
| // invoke ClassLoader getResourceAsStream from the unnamed module |
| InputStream in = thisLoader.getResourceAsStream(NAME); |
| assertNotNull(in); |
| |
| in = thisLoader.getResourceAsStream("p1/" + NAME); |
| assertNull(in); |
| |
| in = thisLoader.getResourceAsStream("p1/impl/" + NAME); |
| assertNull(in); |
| |
| in = thisLoader.getResourceAsStream("p1/resources/" + NAME); |
| assertEquals(readAllAsString(in), "m1/p1.resources"); |
| |
| in = thisLoader.getResourceAsStream("p2/" + NAME); |
| assertNull(in); |
| |
| in = thisLoader.getResourceAsStream("p2/impl/" + NAME); |
| assertNull(in); |
| |
| in = thisLoader.getResourceAsStream("p2/resources/" + NAME); |
| assertNull(in); |
| |
| |
| // invoke ClassLoader getResource from modules m1 |
| in = p1.Main.getResourceAsStreamInClassLoader(NAME); |
| assertNotNull(in); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p1/" + NAME); |
| assertNull(in); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p1/impl/" + NAME); |
| assertNull(in); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p1/resources/" + NAME); |
| assertEquals(readAllAsString(in), "m1/p1.resources"); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p2/" + NAME); |
| assertNull(in); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p2/impl/" + NAME); |
| assertNull(in); |
| |
| in = p1.Main.getResourceAsStreamInClassLoader("p2/resources/" + NAME); |
| assertNull(in); |
| |
| |
| // invoke ClassLoader getResource from modules m2 |
| in = p2.Main.getResourceAsStreamInClassLoader(NAME); |
| assertNotNull(in); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p1/" + NAME); |
| assertNull(in); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p1/impl/" + NAME); |
| assertNull(in); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p1/resources/" + NAME); |
| assertEquals(readAllAsString(in), "m1/p1.resources"); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p2/" + NAME); |
| assertNull(in); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p2/impl/" + NAME); |
| assertNull(in); |
| |
| in = p2.Main.getResourceAsStreamInClassLoader("p2/resources/" + NAME); |
| assertNull(in); |
| |
| |
| // SecurityManager case |
| System.setSecurityManager(new SecurityManager()); |
| |
| assertNull(Main.class.getClassLoader().getResource("/" + NAME)); |
| assertNull(p1.Main.getResourceInClassLoader("/" + NAME)); |
| assertNull(p2.Main.getResourceInClassLoader("/" + NAME)); |
| |
| assertNull(Main.class.getClassLoader().getResourceAsStream("/" + NAME)); |
| assertNull(p1.Main.getResourceAsStreamInClassLoader("/" + NAME)); |
| assertNull(p2.Main.getResourceAsStreamInClassLoader("/" + NAME)); |
| |
| System.out.println("Success!"); |
| } |
| |
| /** |
| * Create a resource in the sub-directory of the given exploded module |
| */ |
| static void createResource(String mn, Path subdir, String msg) throws IOException { |
| Path dir = directoryFor(mn).resolve(subdir); |
| Path file = dir.resolve(NAME); |
| Files.write(file, msg.getBytes("UTF-8")); |
| } |
| |
| /** |
| * Returns the directory for the given module (by name). |
| */ |
| static Path directoryFor(String mn) { |
| Configuration cf = ModuleLayer.boot().configuration(); |
| ResolvedModule resolvedModule = cf.findModule(mn).orElse(null); |
| if (resolvedModule == null) |
| throw new RuntimeException("not found: " + mn); |
| Path dir = Paths.get(resolvedModule.reference().location().get()); |
| if (!Files.isDirectory(dir)) |
| throw new RuntimeException("not a directory: " + dir); |
| return dir; |
| } |
| |
| static String readAllAsString(InputStream in) throws IOException { |
| if (in == null) |
| return null; |
| try (in) { |
| return new String(in.readAllBytes(), "UTF-8"); |
| } |
| } |
| |
| static String readAllAsString(URL url) throws IOException { |
| if (url == null) |
| return null; |
| InputStream in = url.openStream(); |
| return readAllAsString(url.openStream()); |
| } |
| |
| static List<String> readAllAsStrings(Enumeration<URL> urls) throws IOException { |
| List<String> result = new ArrayList<>(); |
| while (urls.hasMoreElements()) { |
| URL url = urls.nextElement(); |
| result.add(readAllAsString(url)); |
| } |
| return result; |
| } |
| |
| static void assertTrue(boolean condition) { |
| if (!condition) throw new RuntimeException(); |
| } |
| |
| static void assertFalse(boolean condition) { |
| if (condition) throw new RuntimeException(); |
| } |
| |
| static void assertNull(Object o) { |
| assertTrue(o == null); |
| } |
| |
| static void assertNotNull(Object o) { |
| assertTrue(o != null); |
| } |
| |
| static void assertEquals(Object actual, Object expected) { |
| if (expected == null) { |
| assertNull(actual); |
| } else { |
| assertTrue(expected.equals(actual)); |
| } |
| } |
| |
| static void assertNotEquals(Object actual, Object expected) { |
| if (expected == null) { |
| assertNotNull(actual); |
| } else { |
| assertTrue(!expected.equals(actual)); |
| } |
| } |
| } |
| |