/** {@inheritDoc} */
@Override
public URL getResource(String name) {
URL url = findResource(name);
if (url == null) url = ClassLoader.getSystemResource(name);
if (url == null) url = super.getResource(name);
return url;
}
/** 获取类的class文件位置的URL。这个方法是本类最基础的方法，供其它方法调用。 */
public URL getClassLocationURL(final Class cls) {
if (cls == null) {
throw new IllegalArgumentException("class that input is null");
}
URL result = null;
final String clsAsResource = cls.getName().replace('.', '/').concat(".class");
final ProtectionDomain pd = cls.getProtectionDomain();
if (pd != null) {
final CodeSource cs = pd.getCodeSource();
if (cs != null) {
result = cs.getLocation();
}
if (result != null) {
if ("file".equals(result.getProtocol())) {
try {
if (result.toExternalForm().endsWith(".jar")
|| result.toExternalForm().endsWith(".zip")) {
result =
new URL(
"jar:".concat(result.toExternalForm()).concat("!/").concat(clsAsResource));
} else if (new File(result.getFile()).isDirectory()) {
result = new URL(result, clsAsResource);
}
} catch (MalformedURLException ignore) {
}
}
}
}
if (result == null) {
final ClassLoader clsLoader = cls.getClassLoader();
result =
clsLoader != null
? clsLoader.getResource(clsAsResource)
: ClassLoader.getSystemResource(clsAsResource);
}
return result;
}
public java.net.URL getResource(String name) {
return ClassLoader.getSystemResource(name);
}
public static void main(String[] args) throws Exception {
System.out.println(
"Checking that all known MBeans that are "
+ "NotificationBroadcasters have sane "
+ "MBeanInfo.getNotifications()");
System.out.println("Checking platform MBeans...");
checkPlatformMBeans();
URL codeBase = ClassLoader.getSystemResource("javax/management/MBeanServer.class");
if (codeBase == null) {
throw new Exception("Could not determine codeBase for " + MBeanServer.class);
}
System.out.println();
System.out.println("Looking for standard MBeans...");
String[] classes = findStandardMBeans(codeBase);
System.out.println("Testing standard MBeans...");
for (int i = 0; i < classes.length; i++) {
String name = classes[i];
Class<?> c;
try {
c = Class.forName(name);
} catch (Throwable e) {
System.out.println(name + ": cannot load (not public?): " + e);
continue;
}
if (!NotificationBroadcaster.class.isAssignableFrom(c)) {
System.out.println(name + ": not a NotificationBroadcaster");
continue;
}
if (Modifier.isAbstract(c.getModifiers())) {
System.out.println(name + ": abstract class");
continue;
}
NotificationBroadcaster mbean;
Constructor<?> constr;
try {
constr = c.getConstructor();
} catch (Exception e) {
System.out.println(name + ": no public no-arg constructor: " + e);
continue;
}
try {
mbean = (NotificationBroadcaster) constr.newInstance();
} catch (Exception e) {
System.out.println(name + ": no-arg constructor failed: " + e);
continue;
}
check(mbean);
}
System.out.println();
System.out.println("Testing some explicit cases...");
check(new RelationService(false));
/*
We can't do this:
check(new RequiredModelMBean());
because the Model MBean spec more or less forces us to use the
names GENERIC and ATTRIBUTE_CHANGE for its standard notifs.
*/
checkRMIConnectorServer();
System.out.println();
if (!suspicious.isEmpty()) System.out.println("SUSPICIOUS CLASSES: " + suspicious);
if (failed.isEmpty()) System.out.println("TEST PASSED");
else {
System.out.println("TEST FAILED: " + failed);
System.exit(1);
}
}