package com.smilezl.learn.clsutil;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
/**
* getallclassByInterface
* @author zhuolin
*
*/
public class ClassUtils {
@SuppressWarnings({ "rawtypes", "unchecked" })
public static List
List
if (c.isInterface()) {
String packageName = c.getPackage().getName();
try {
List
for (int i = 0; i < allClass.size(); i++) {
if (c.isAssignableFrom(allClass.get(i))) {//判断是否是个接口
if (!c.equals(allClass.get(i))) {
classList.add(allClass.get(i));
}
}
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return classList;
}
/**
* 从一个包中查找出所有的类，在jar包中不能查找
* @param packageName
* @return
*/
@SuppressWarnings("rawtypes")
private static List
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
String path = packageName.replace('.', '/');
Enumeration
List
while (resources.hasMoreElements()) {
URL resource = resources.nextElement();
dirs.add(new File(resource.getFile()));
}
ArrayList
for (File directory : dirs) {
classes.addAll(findClass(directory, packageName));
}
return classes;
}
@SuppressWarnings("rawtypes")
private static List
ArrayList
if (!directory.exists()) {
return classes;
}
File[] files = directory.listFiles();
for (File file : files) {
if (file.isDirectory()) {
classes.addAll(findClass(file, packageName + "." + file.getName()));
} else if (file.getName().endsWith(".class")) {
classes.add(Class.forName(packageName + "." + file.getName().substring(0, file.getName().length() - 6)));
}
}
return classes;
}
public static void main(String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
List
for (Class c : list) {
Human man = (Human) Class.forName(c.getName()).newInstance();
man.talk();
}
}
}