package com.tgb.SpringActivemq.utils;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.log4j.Logger;

public class MqPropertyUtil {

	private static final Logger logger = Logger.getLogger(MqPropertyUtil.class);
	private static Properties props;
	static {
		loadProps();
	}

	synchronized static private void loadProps() {
		logger.info("開始載入properties檔案內容.......");
		props = new Properties();
		InputStream in = null;
		try {
			// 第一種，通過類載入器進行獲取properties檔案流
			in = MqPropertyUtil.class.getClassLoader().getResourceAsStream("mq.properties");
			// 第二種，通過類進行獲取properties檔案流
			// in = PropertyUtil.class.getResourceAsStream("/mq.properties");
			props.load(in);
		} catch (FileNotFoundException e) {
			logger.error("jdbc.properties檔案未找到");
		} catch (IOException e) {
			logger.error("出現IOException");
		} finally {
			try {
				if (null != in) {
					in.close();
				}
			} catch (IOException e) {
				logger.error("jdbc.properties檔案流關閉出現異常");
			}
		}
		logger.info("載入properties檔案內容完成...........");
		logger.info("properties檔案內容：" + props);
	}

	public static String getProperty(String key) {
		if (null == props) {
			loadProps();
		}
		return props.getProperty(key);
	}

	public static String getProperty(String key, String defaultValue) {
		if (null == props) {
			loadProps();
		}
		return props.getProperty(key, defaultValue);
	}
}