内容：分别位于\myApp\WEB-INF\classes下的类和\webroot下的类，，利用URL数组指定多个仓库位置加载。
MyClassLoader：
public class MyClassLoader {public static final String WEB_ROOT = System.getProperty("user.dir") +File.separator + "webroot";public static final String WEB_APP = System.getProperty("user.dir") +File.separator + "myApp" + File.separator + "WEB-INF"+ File.separator + "classes";public static void main(String[] args) {URLClassLoader loader = null;try {URL[] urls = new URL[2];URLStreamHandler streamHandler = null;File classPath = new File(WEB_ROOT);File appPath = new File(WEB_APP);String repository1 = (new URL("file", null, classPath.getCanonicalPath() + File.separator)).toString() ;String repository2 = (new URL("file", null, appPath.getCanonicalPath() + File.separator)).toString() ;urls[0] = new URL(null, repository1, streamHandler);urls[1] = new URL(null, repository2, streamHandler);loader = new URLClassLoader(urls);} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}Class myClass = null;Class appClass = null;try {myClass = loader.loadClass("ModernServlet");appClass = loader.loadClass("PrimitiveServlet");} catch (Exception e) {System.out.println("error");}Servlet servlet = null;try {servlet = (Servlet) myClass.newInstance();servlet.init(null);servlet = (Servlet) appClass.newInstance();servlet.init(null);} catch (Exception e) {System.out.println("error");}}}
何不去远方！昆明呀——赶一个花海;
