siteurls2.java

一个用struts tiles的在线影院web系统

package com.eline.vod.utils;

import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import com.blue.web.common.util.AppSettings;

public class SiteUrls2 {

	public static final String URL_HOME		= "home";
	public static final String URL_REGISTER	= "register";
	public static final String URL_USER_DO	= "user.do";
	public static final String URL_GROUP		= "group";
	public static final String URL_MOVIE		= "movie";
	public static final String URL_WND_MOVIEPLAYER	= "window.movie.player";

	public static final String URL_PDA_REPWD	= "pda.retrievepassword";
	public static final String URL_PDA_LOGIN	= "pda.login";

	private static SiteUrls2 instance	= null;
	private Map _properties = null;

	private SiteUrls2() {
		_properties = new HashMap();
	}
	
	public static SiteUrls2 getInstance() {
		if (instance == null)
			instance = new SiteUrls2();
		return instance;
	}
	
	public void init(String configURL) throws Exception {
		Element rootElement = null;
		try {
			URL url = new URL(configURL);
			InputSource xmlInp = new InputSource(url.openStream());

			DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
			DocumentBuilder parser = docBuilderFactory.newDocumentBuilder();

			Document doc = parser.parse(xmlInp);

			rootElement = doc.getDocumentElement();
			rootElement.normalize();
		} catch (IOException e) {
			throw new Exception("Failed to open/read configuration file." + e);
		} catch (SAXException e) {
			throw new Exception("Invalid configuration file's content." + e);
		} catch (Exception e) {
			throw e;
		}
		try {
			loadValuesFromConfigurationXml(rootElement);
		} catch (Exception e) {
			throw new Exception("Error for process configuration datas." + e);
		}
	}
	
	private void loadValuesFromConfigurationXml(Element rootElement) throws Exception {
		NodeList nodes = rootElement.getChildNodes();
		for (int i = 0; i < nodes.getLength(); i ++) {
			Node node = nodes.item(i);
			if (node != null && node instanceof Element) {
				if ("url".equals(node.getNodeName())) {
					processSingleNode(node);
				}
			}
		}
	}
	private void processSingleNode(Node node) {
		NamedNodeMap attrs = node.getAttributes();
		String key = null;
		String value = null;
		for (int i = 0; i < attrs.getLength(); i ++) {
			Node attr = attrs.item(i);
			if ("name".equals(attr.getNodeName())) {
				key = attr.getNodeValue();
			} else if ("path".equals(attr.getNodeName())) {
				value = attr.getNodeValue();
			}
		}
		if (key != null && key.length() > 0 && value != null && value.length() > 0) {
			String rootPath = AppSettings.getInstance().getProperty(AppKeys.APP_ROOT);
			System.out.println("url["+key+"]=" + rootPath + value);
			_properties.put(key, rootPath + value);
		}
	}

	public synchronized String getProperty(String key) {
		return (String)_properties.get(key);
	}
	
	public synchronized void setProperty(String key, String value) {
		_properties.put(key, value);
	}
	
	public String getHomeURL() {
		return getProperty(SiteUrls2.URL_HOME);
	}
	public String getMovieURL() {
		return getProperty(SiteUrls2.URL_MOVIE);
	}
	public String getMovieGroupURL() {
		return getProperty(SiteUrls2.URL_GROUP);
	}
	public String getRegisterURL() {
		return getProperty(SiteUrls2.URL_REGISTER);
	}
}