Bom dia!
Gostaria de saber como faço para ler as classes(pegar uma lista) de um pacote que está dentro de um jar.
Quero que o seguinte codigo consiga fazer isso:
public static Set<Class> getPackageClasses(Package classPackage) {
Set<Class> classes = new HashSet<Class>();
try {
ClassLoader cl = classPackage.getClass().getClassLoader();
if (cl == null) {
// no class loader specified -> use thread context class loader
cl = Thread.currentThread().getContextClassLoader();
}
String packageUrl = classPackage.getName().replaceAll("\\.", "/");
Enumeration<URL> packageLocations = cl.getResources(packageUrl);
while (packageLocations.hasMoreElements()){
URL url = packageLocations.nextElement();
process(classes,url,classPackage.getName());
}
return classes;
} catch (IOException e) {
throw new ReflectionException(e);
}
}
private static void process(Set<Class> classes , URL url , String base) throws IOException{
try {
if(url.toString().contains("jar:")) {
String urlString = url.toString();
urlString = urlString.substring(urlString.indexOf(":") + 1);
url = new URL(urlString);
}
File folder = new File(url.toURI());
File[] files = folder.listFiles(new FilenameFilter(){
@Override
public boolean accept(File file, String name) {
return name.indexOf("$")<0 && name.endsWith(".class");
}
});
if(files != null) {
for (File f : files){
String name = base + "." + f.getName().substring(0, f.getName().indexOf('.'));
classes.add(loadClass(name));
}
}
} catch (URISyntaxException e) {
throw new IOException(e);
}
}
private static Class<?> loadClass(String className) throws ClassNotFoundReflectionException {
try {
return Class.forName(className);
} catch (ClassNotFoundException e) {
throw new ClassNotFoundReflectionException("Class " + className + " has not found");
}
}
Algem sabe como faz?
Abraços
.