com.gc.core.framework.utils.PropertiesUtils.java Source code

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Here is the source code for com.gc.core.framework.utils.PropertiesUtils.java

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/**
 * Copyright (c) 2005-2010 springside.org.cn
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * 
 * $Id: PropertiesUtils.java 1211 2010-09-10 16:20:45Z calvinxiu $
 */
package com.gc.core.framework.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.DefaultPropertiesPersister;
import org.springframework.util.PropertiesPersister;

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

/**
 * Properties Util.
 * 
 * @author calvin
 */
public class PropertiesUtils {

    private static final String DEFAULT_ENCODING = "UTF-8";

    private static Logger logger = LoggerFactory.getLogger(PropertiesUtils.class);

    private static PropertiesPersister propertiesPersister = new DefaultPropertiesPersister();
    private static ResourceLoader resourceLoader = new DefaultResourceLoader();

    /**
     * properties, ???.
     * Spring Resource?, ?UTF-8.
     * 
     * @see org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
     */
    public static Properties loadProperties(String... resourcesPaths) throws IOException {
        Properties props = new Properties();

        for (String location : resourcesPaths) {

            logger.debug("Loading properties file from:" + location);

            InputStream is = null;
            try {
                Resource resource = resourceLoader.getResource(location);
                is = resource.getInputStream();
                propertiesPersister.load(props, new InputStreamReader(is, DEFAULT_ENCODING));
            } catch (IOException ex) {
                logger.info("Could not load properties from classpath:" + location + ": " + ex.getMessage());
            } finally {
                if (is != null) {
                    is.close();
                }
            }
        }
        return props;
    }
}