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基础类库
There is a newer version: 1.6.17
package com.alogic.naming;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.anysoft.util.IOTools;
import com.anysoft.util.Expired;
import com.anysoft.util.Properties;
import com.anysoft.util.Reportable;
import com.anysoft.util.Settings;
import com.anysoft.util.Watcher;
import com.anysoft.util.WatcherHub;
import com.anysoft.util.XmlElementProperties;
import com.anysoft.util.XmlTools;
import com.anysoft.util.resource.ResourceFactory;

/**
 * 命名服务入口
 * 
 * @author duanyy
 * @since 1.6.6.8 
 * 
 * @version 1.6.6.10 [duanyy 20161226] 

 * - 允许缓存对象过期

 * 
 * @version 1.6.7.9 [20170201 duanyy] 

 * - 采用SLF4j日志框架输出日志 

 */
public abstract class Naming  implements Context,Watcher {

	/**
	 * a logger of log4j
	 */
	protected static final Logger LOG = LoggerFactory.getLogger(Naming.class);
	
	/**
	 * Watcher Hub
	 */
	protected WatcherHub watcherHub = new WatcherHub(); // NOSONAR
	
	/**
	 * 缓存的对象
	 */
	protected Hashtable caches = new Hashtable(); // NOSONAR	
	
	/**
	 * 子配置环境列表
	 */
	protected List> subContexts = new ArrayList>(); // NOSONAR
	
	/**
	 * 获取配置文件中代表context的tag名
	 * @return tag名
	 */
	protected String getContextName(){
		return "context";
	}
	
	/**
	 * 创建Context对象实例
	 * @param e xml配置节点
	 * @param p 环境变量
	 * @param attrName 类名所对应的属性名称
	 * @return 对象实例
	 */
	protected abstract Context newInstance(Element e, Properties p, String attrName);
	
	@Override
	public void configure(Element root, Properties props) {
		Properties p = new XmlElementProperties(root,props);
		
		NodeList children = XmlTools.getNodeListByPath(root, getContextName());				
		for (int i = 0 ; i < children.getLength() ; i ++){
			Node n = children.item(i);
			if (n.getNodeType() != Node.ELEMENT_NODE){
				continue;
			}
			
			Element e = (Element)n;
			
			try {
				Context ctx = newInstance(e, p,"module"); // NOSONAR
				if (ctx != null){
					ctx.addWatcher(this);
					subContexts.add(ctx);
				}
			}catch (Exception ex){
				LOG.error("Can not create context instance,check your configuration.",ex);
			}
		}
		
		configure(p);
	}
	
	@Override
	public void configure(Properties p) {
		// nothing to do
	}	

	@Override
	public void close() throws Exception {
		caches.clear();
		
		for (Context s:subContexts){
			s.removeWatcher(this);
			IOTools.close(s);
		}
		
		subContexts.clear();
	}

	@Override
	public void report(Element xml) {
		if (xml != null) {
			xml.setAttribute("module", getClass().getName());
			xml.setAttribute("ctxName", getContextName());

			Document doc = xml.getOwnerDocument();

			for (Context c : subContexts) {
				Element context = doc.createElement(getContextName());

				c.report(context);

				xml.appendChild(context);
			}
		}
	}

	@Override
	public void report(Map json) {
		if (json != null){
			json.put("module", getClass().getName());
			json.put("ctxName", getContextName());
			
			List