cn.vlabs.duckling.vwb.service.config.provider.PropertiesFileReader.java Source code

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Here is the source code for cn.vlabs.duckling.vwb.service.config.provider.PropertiesFileReader.java

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/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 *
 */

package cn.vlabs.duckling.vwb.service.config.provider;

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

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

/**
 * ??
 * @date May 10, 2010
 * @author xiejj@cnic.cn
 */
public class PropertiesFileReader extends PropertyReader {
    private static Logger log = Logger.getLogger(PropertiesFileReader.class);

    public PropertiesFileReader(String configFile) {
        super(load(configFile));
    }

    private static Properties load(String configFile) {
        Properties props = new Properties();
        FileInputStream fis = null;
        try {
            if (StringUtils.isEmpty(configFile)) {
                log.error("?");
            } else {
                fis = new FileInputStream(configFile);
                props.load(fis);
            }
        } catch (FileNotFoundException e) {
            log.error("?" + configFile + "");
        } catch (IOException e) {
            log.error(e);
        } finally {
            try {
                if (fis != null) {
                    fis.close();
                    fis = null;
                }
            } catch (IOException ioe) {
                log.error(ioe);
            }
        }
        return props;
    }
}