下面列出了java.net.URLClassLoader#findResource ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public static void main(String[] args) throws Exception {
Path jarPath = Paths.get(System.getProperty("user.dir", "."), "test.jar");
try {
createJar(jarPath);
URL j = new URL("jar:file:" + jarPath.toString() + "!/");
URLClassLoader ucl = new URLClassLoader(new URL[]{j});
ucl.findResource("resource.txt");
URL r = new URL("jar:file:" + jarPath.toString() + "!/resource.txt");
if (!Handler.URLS.contains(r))
throw new AssertionError("jar: URL handler not invoked");
}
finally {
Files.delete(jarPath);
}
}
/**
* Returns the spring boot configuration (supports `application.properties` and `application.yml`)
* or an empty properties object if not found
*
* @param springActiveProfile currently active spring-boot profile
* @param compileClassLoader compile class loader
* @return properties object
*/
public static Properties getSpringBootApplicationProperties(String springActiveProfile, URLClassLoader compileClassLoader) {
URL ymlResource = compileClassLoader.findResource("application.yml");
URL propertiesResource = compileClassLoader.findResource("application.properties");
Properties props = getPropertiesFromApplicationYamlResource(springActiveProfile, ymlResource);
props.putAll(getPropertiesResource(propertiesResource));
return props;
}
/** Set up given number of FileObjects */
protected FileObject[] setUpFileObjects(int foCount) throws Exception {
tmp = createTempFolder();
destFolder = LocalFSTest.createFiles(foCount, 0, tmp);
File xmlbase = generateXMLFile(destFolder, new ResourceComposer(LocalFSTest.RES_NAME, LocalFSTest.RES_EXT, foCount, 0));
File jar = Utilities.createJar(tmp, "jarxmlfs.jar");
cloader = new URLClassLoader(new URL[] { jar.toURL() });
URL res = cloader.findResource(PACKAGE + xmlbase.getName());
xmlfs = new XMLFileSystem();
xmlfs.setXmlUrl(res, false);
FileObject pkg = xmlfs.findResource(PACKAGE);
return pkg.getChildren();
}
public static URL getResourceURL(String resource, Class relatedClass) {
URL result = null;
ClassLoader classLoader = relatedClass.getClassLoader();
if(classLoader instanceof java.net.URLClassLoader) {
URLClassLoader urlClassLoader = (java.net.URLClassLoader) classLoader;
result = urlClassLoader.findResource(resource);
} else {
result = classLoader.getResource(resource);
}
return result;
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if (connection instanceof JarURLConnection) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { jarURLConnection.getJarFileURL() });
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName()) != null;
}
finally {
if (urlClassLoader instanceof Closeable) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if (is != null) {
is.close();
}
}
return is != null;
}
catch (IOException ioe) {
return false;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()
});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null; }
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false; }
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()
});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null; }
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false; }
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()
});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null; }
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false; }
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()
});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null; }
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false; }
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()
});
try { return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null; }
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) { return false; }
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{
jarURLConnection.getJarFileURL()
});
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) {
return false;
}
}
/**
* Helper for WrappedCallable/WrappedRunnable
*
* @param ctx
* @param mcl
* @param wrapper
* @throws ServletException
*/
static void initModule(final NotesContext ctx, final ClassLoader mcl, final Object wrappedObject) throws ServletException {
// next initialize the context with a FakeHttpRequest. This is neccessary so that internal things
// like session-creation and so on work properly
// RPr:
// You may ask what I do here: ReLoading the module again from the MCL triggers signature checking.
if (mcl instanceof ModuleClassLoader) {
URLClassLoader dcl = (URLClassLoader) ((ModuleClassLoader) mcl).getDynamicClassLoader();
String className = wrappedObject.getClass().getName();
String str = className.replace('.', '/') + ".class";
URL url = dcl.findResource(str);
if (url != null && url.getProtocol().startsWith("xspnsf")) {
// Set up the "TopLevelXPageSigner == Signer of the runnable
// As soon as we are in a xspnsf, we do not have a SessionFactory!
ctx.setSignerSessionRights("WEB-INF/classes/" + str);
// RPr: There is a bug: you can decide if you want to use "sessionAsSigner" or "sessionAsSignerFullAccess"
// But you cannot use both simultaneously!
Session signerSession = ctx.getSessionAsSigner(true);
if (signerSession != null) {
Factory.setSessionFactory(new XPageSignerSessionFactory(false), SessionType.SIGNER);
Factory.setSessionFactory(new XPageSignerSessionFactory(true), SessionType.SIGNER_FULL_ACCESS);
} else {
// do not setup signer sessions if it is not properly signed!
Factory.setSessionFactory(new InvalidSessionFactory(), SessionType.SIGNER);
Factory.setSessionFactory(new InvalidSessionFactory(), SessionType.SIGNER_FULL_ACCESS);
}
} else {
// The code is not part from an NSF, so it resides on the server
Factory.setSessionFactory(new XPageNamedSessionFactory(Factory.getLocalServerName(), false), SessionType.SIGNER);
Factory.setSessionFactory(new XPageNamedSessionFactory(Factory.getLocalServerName(), true), SessionType.SIGNER_FULL_ACCESS);
}
}
Factory.setClassLoader(mcl);
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()});
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) {
return false;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{
jarURLConnection.getJarFileURL()
});
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) {
return false;
}
}
public static String getPropertyFromManifest(String manifestPath, String property){
try {
URLClassLoader cl = (URLClassLoader) FileUtil.class.getClassLoader();
URL url = cl.findResource(manifestPath);
Manifest manifest = new Manifest(url.openStream());
Attributes attr = manifest.getMainAttributes();
return attr.getValue(property);
} catch (IOException ex) {
logger.debug("Exception: ", ex);
return null;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{
jarURLConnection.getJarFileURL()
});
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) {
return false;
}
}
public static boolean urlExists(URL url) {
try {
URLConnection connection = url.openConnection();
if ( connection instanceof JarURLConnection ) {
JarURLConnection jarURLConnection = (JarURLConnection)connection;
URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
jarURLConnection.getJarFileURL()});
try {
return urlClassLoader.findResource(jarURLConnection.getEntryName())!=null;
}
finally {
if ( urlClassLoader instanceof Closeable ) {
((Closeable)urlClassLoader).close();
}
}
}
InputStream is = null;
try {
is = url.openStream();
}
finally {
if ( is!=null ) {
is.close();
}
}
return is!=null;
}
catch (IOException ioe) {
return false;
}
}
/**
* Returns the thorntail configuration (supports `project-defaults.yml`)
* or an empty properties object if not found
*
* @param compileClassLoader URLClassLoader for resource access
* @return thorntail configuration properties
*/
public static Properties getThorntailProperties(URLClassLoader compileClassLoader) {
URL ymlResource = compileClassLoader.findResource("project-defaults.yml");
return YamlUtil.getPropertiesFromYamlResource(ymlResource);
}