PropertiesHelper

public class PropertiesHelper {
	
	private static DebugLog LOG = LogFactory.getDebugLog(PropertiesHelper.class);
	
	public PropertiesHelper(){
		
	}
	
	/**
	 * 传入properties文件名，和key，来获得对应value
	 * @param fileName properties文件名
	 * @param key 要查的value对应的key
	 * 
	 * @return 返回key对应的value值
	 */
	public static String getValue(String fileName,String key){
		File file = new File(CommonUtils.getClassesPath() + fileName);
		InputStream fileIn = null;
		String res = "";
		try {
			fileIn = new FileInputStream(file);
			Properties properties = new Properties();
			properties.load(fileIn);
			res = properties.getProperty(key);
		} catch (FileNotFoundException e) {
			LOG.error("未找到properties文件："+e.toString());
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if(fileIn != null) {
				try  {
					fileIn.close();
				}  catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return res;
	}
	
}