Properties 工具类

Properties 工具类

/** * Program  : PropertyConfigUtil.java<br/> * Author   : Ices<br/> * Create   : 2007-7-24 上午10:46:57<br/> * * Copyright 1997-2006 by Embedded Internet Solutions Inc., * All rights reserved. * * This software is the confidential and proprietary information * of Embedded Internet Solutions Inc.("Confidential Information"). * You shall not disclose such Confidential Information and shall * use it only in accordance with the terms of the license agreement * you entered into with Embedded Internet Solutions Inc. * */import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.util.Properties;import org.apache.log4j.Logger;public class PropertyConfigUtil {/** * Logger for this class */private static final Logger logger = Logger.getLogger(PropertyConfigUtil.class);private String propertiesPath;public PropertyConfigUtil(String propertiesPath) {this.propertiesPath = propertiesPath;}public String getValue(String key) {Properties properties = new Properties();InputStream inputStream = null;try {inputStream = PropertyConfigUtil.class.getResourceAsStream(this.propertiesPath);properties.load(inputStream);//check(key, properties);return properties.getProperty(key);} catch (FileNotFoundException e) {e.printStackTrace();logger.warn("getValue(String) - exception ignored", e);} catch (IOException e) {e.printStackTrace();logger.error("getValue(String)", e);} finally {try {if (inputStream == null) {logger.error("can not get resourse:" + propertiesPath);} else {inputStream.close();}} catch (IOException e) {logger.error("getValue(String)", e);e.printStackTrace();}}return null;}protected boolean check(String key, Properties properties) {if (properties.containsKey(key)) {return true;} else {throw new IllegalArgumentException("the property file["+ this.propertiesPath + "] do not have the key:" + key);}}}