public static File locationOf(Class clazz) {
String path = clazz.getProtectionDomain().getCodeSource().getLocation().getPath();
path = path.contains("!") ? path.substring(0, path.lastIndexOf('!')) : path;
if (!path.isEmpty() && path.charAt(0) == '/') {
path = "file:" + path;
}
try {
return getRelativeFile(new File(new URL(path).toURI()), currentDir);
} catch (Exception e) {
Log.severe("", e);
return getRelativeFile(new File(path), currentDir);
}
}
/** 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;
}