PortalManagerFactory.java

package com.jiuqi.mobile.nigo.comeclose.portal;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;

/**
 * 门户工厂（仅提供给门户网站使用，使用时。
 * 请确认对于的Manager接口以标注PortalAnnotation标签
 * 请确认您使用的方法已经标注PortalMethodAnnotation标签
 * @author modi
 *
 */
public class PortalManagerFactory {
	@SuppressWarnings("unchecked")
	public static <T> T instanceManager(Class<T> c){
		if(c.isInterface()){
			return instantceInterface(c);
		}
		return (T) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(), 
				c.getInterfaces(), 
				instanceInvocation(c));
	}
	private synchronized static <T> InvocationHandler instanceInvocation(Class<T> c) {
		try {
			Class<?> inv = Class.forName("com.jiuqi.mobile.nigo.biz.core.portal.PortalInvocationHandler", true, Thread.currentThread().getContextClassLoader());
			return (InvocationHandler) inv.getConstructors()[0].newInstance(c);
		} catch (Exception e) {
			throw new RuntimeException("实例化Manager时，invocation构建失败",e);
		}
	}
//	private static InvocationHandler instanceManagerInvocation(Class<?> managerClass){
//		return instanceInvocation(managerClass);
//	}
	@SuppressWarnings("unchecked")
	private static <T> T instantceInterface(Class<T> c){
		PortalAnnotation ma = c.getAnnotation(PortalAnnotation.class);
		if(null == ma){
			throw new RuntimeException("Manager未使用PortalAnnotation标签");
		}
		try {
			Class<?> impl = Class.forName(ma.implClass(), true, Thread.currentThread().getContextClassLoader());
			return (T) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(), 
					new Class<?>[]{c}, 
					instanceInvocation(impl));
		} catch (ClassNotFoundException e) {
			throw new RuntimeException("Manager实例化失败",e);
		} 
	}
}