package com.opensymphony.webwork.portlet.util;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
public class ClassLoaderUtils {
public ClassLoaderUtils() {
}
public static Class loadClass(String className, Class callingClass) throws ClassNotFoundException {
try {
return Thread.currentThread().getContextClassLoader().loadClass(className);
} catch (ClassNotFoundException e) {
try {
return Class.forName(className);
} catch (ClassNotFoundException ex) {
try {
return (com.opensymphony.webwork.portlet.util.ClassLoaderUtils.class).getClassLoader().loadClass(className);
} catch (ClassNotFoundException exc) {
try {
return callingClass.getClassLoader().loadClass(className);
} catch (ClassNotFoundException exce) {
throw exce;
}
}
}
}
}
public static URL getResource(String resourceName, Class callingClass) {
URL url = null;
url = Thread.currentThread().getContextClassLoader().getResource(resourceName);
if (url == null)
url = (com.opensymphony.webwork.portlet.util.ClassLoaderUtils.class).getClassLoader().getResource(resourceName);
if (url == null)
url = callingClass.getClassLoader().getResource(resourceName);
return url;
}
public static Enumeration getResources(String resourceName, Class callingClass) throws IOException {
Enumeration urls = Thread.currentThread().getContextClassLoader().getResources(resourceName);
if (urls == null) {
urls = (com.opensymphony.webwork.portlet.util.ClassLoaderUtils.class).getClassLoader().getResources(resourceName);
if (urls == null)
urls = callingClass.getClassLoader().getResources(resourceName);
}
return urls;
}
public static InputStream getResourceAsStream(String resourceName, Class callingClass) {
try {
URL url = getResource(resourceName, callingClass);
return url == null ? null : url.openStream();
} catch (IOException e) {
return null;
}
}
public static void printClassLoader() {
System.out.println("ClassLoaderUtils.printClassLoader");
printClassLoader(Thread.currentThread().getContextClassLoader());
}
public static void printClassLoader(ClassLoader cl) {
System.out.println("ClassLoaderUtils.printClassLoader(cl = " + cl + ")");
if (cl != null)
printClassLoader(cl.getParent());
}
}