com.eryansky.common.utils.io.ResourceUtils.java Source code

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Here is the source code for com.eryansky.common.utils.io.ResourceUtils.java

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/**
 *  Copyright (c) 2012-2014 http://www.eryansky.com
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 */
package com.eryansky.common.utils.io;

import org.apache.commons.io.IOUtils;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

/**
 * ?.
 * @author &wencp wencp@strongit.com.cn
 * @date   2012-12-15 ?8:43:52
 */
public class ResourceUtils {

    /**
     *  {res}.properties  key 
     * 
     * @param baseName
     * @param key
     * @return
     */
    public static String getString(String baseName, String key) {
        return _getStringForLocale(Locale.getDefault(), baseName, key);
    }

    /**
     *  {res}.properties  key 
     * 
     * @param locale
     * @param baseName
     * @param key
     * @return
     */
    private static String _getStringForLocale(Locale locale, String baseName, String key) {
        try {
            ResourceBundle rb = ResourceBundle.getBundle(baseName, locale, ResourceUtils.class.getClassLoader());
            return (rb != null) ? rb.getString(key) : null;
        } catch (MissingResourceException e) {
            return null;
        } catch (NullPointerException e) {
            return null;
        }
    }

    /**
     *  {res}.properties  key ??
     * 
     * @param baseName
     * @param key
     * @param args
     * @return
     */
    public static String getString(String baseName, String key, Object... args) {
        String text = getString(baseName, key);
        return (text != null) ? MessageFormat.format(text, args) : null;
    }

    /**
     *  {res}.properties  key ??
     * 
     * @param locale
     * @param baseName
     * @param key
     * @param args
     * @return
     */
    public static String getStringForLocale(Locale locale, String baseName, String key, Object... args) {
        String text = _getStringForLocale(locale, baseName, key);
        return (text != null) ? MessageFormat.format(text, args) : null;
    }

    /**
     * {res}.properties?
     * @param resource ?
     * @return ?
     */
    public static String loadFromResource(String resource) {
        InputStream in = null;
        BufferedReader reader = null;
        try {
            in = new FileInputStream(resource);
            reader = new BufferedReader(new InputStreamReader(in, "utf-8"));
            return IOUtils.toString(reader);
        } catch (Exception excp) {
            throw new RuntimeException(excp);
        } finally {
            IOUtils.closeQuietly(reader);
            IOUtils.closeQuietly(in);
            reader = null;
        }
    }

}