extendedaction.java

企业管理信息系统 myeclipse+mysql+hibernate+struts

package com.emis.framework;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.Action;

import com.emis.util.Constants;

public abstract class ExtendedAction extends Action {
	Log log=LogFactory.getLog(this.getClass());
	
	/**
	 * 得到一个具体的业务代理实例
	 * @param factoryKey   具体某个工厂,可扩展
	 * @param serviceKey   某个业务的key
	 * @return
	 */
	protected IEmisActionProxy getService(String factoryKey,String serviceKey) {
		//可以指定工厂类
		IEmisFactory faction=(IEmisFactory)getApplicationObject(factoryKey);

		IEmisActionProxy service=null;
		try{
			service=faction.createService(serviceKey);
		}catch(Exception ex){ 
		    System.out.println("加载服务出现错误！！");
		    return null;
		}
		return service;     
	}
	
	/**
	 * 默认加载EmisActionProxyFactory工厂
	 * @param serviceKey
	 * @return
	 */
	protected IEmisActionProxy getService(String serviceKey) {
		return (this.getService(Constants.EMIS_FACTORY_KEY,serviceKey));
	}
	
	/**
	 * 
	 * @param serviceFactoryKey
	 * @return
	 *这个方法通过key取出容器中的对象
	 */
	protected Object getApplicationObject(String key){
		return servlet.getServletContext().getAttribute(key);
	}
}