java读取properties配置文件工具类

获取配置文件中配置信息

String xxx = DataParamReader.getDataParam("xxx"); 

public class DataParamReader {
	private static Logger log = Logger.getLogger(DataParamReader.class);
	private static final String PROPERTIES = "xxx.properties";
	private static Properties dataProps = null;
	
	private DataParamReader(){}
	
	private static synchronized void getInstance() {
		dataProps = new Properties();

		try {
			InputStream inputStream = Thread.currentThread()
					.getContextClassLoader().getResourceAsStream(
							PROPERTIES);
			dataProps.load(inputStream);
			log.info("读取配置文件:" + PROPERTIES);
		} catch (FileNotFoundException e2) {
			// TODO Auto-generated catch block
			log.error("未发现配置文件：" + e2.getMessage());
		} catch (IOException e1) {
			log.error("读取配置文件出错：" + e1.getMessage());
		} catch (Exception e) {
			log.error("读取配置文件出错：" + e.getMessage());
		}
	}
	
	public static String getDataParam(String name){
		if (dataProps == null){
			getInstance();
		}
		return dataProps.getProperty(name);
	}

}