com.zxy.commons.lang.conf.AbstractConfigProperties.java Source code

Introduction

Here is the source code for com.zxy.commons.lang.conf.AbstractConfigProperties.java

Source

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 com.zxy.commons.lang.conf;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Properties;

import org.apache.commons.lang.BooleanUtils;
import org.apache.commons.lang.math.NumberUtils;

import com.google.common.io.ByteSource;
import com.google.common.io.Resources;

/** 
 * ?properties?
 * 
 * <p>
 * ????
 * <p>
 * <a href="BaseConfigProperties.java"><i>View Source</i></a>
 * 
 * @author zhaoxunyong@qq.com
 * @version 1.0
 * @since 1.0 
 */
public abstract class AbstractConfigProperties {

    private Properties properties;

    protected AbstractConfigProperties() {
        try {
            properties = load();
        } catch (IOException e) {
            throw new AssertionError(e);
        }
    }

    /**
     * ?Properties
     * 
     * @return Properties
     * @throws IOException
     */
    @SuppressWarnings("PMD.EmptyCatchBlock")
    private Properties load() throws IOException {
        //      final URL url = Resources.getResource(resource);
        final URL url = getPath();
        final ByteSource byteSource = Resources.asByteSource(url);
        final Properties properties = new Properties();
        InputStream inputStream = null;
        try {
            inputStream = byteSource.openBufferedStream();
            properties.load(inputStream);
            //         properties.list(System.out);
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException ioException) {
                    // do nothing
                }
            }
        }
        return properties;
    }

    /**
     * ??
     * 
     * <p>
     * ?
     * ????config.properties
     * <pre>
     *   protected URL getPath() {
     *      return this.getClass().getResource("/config.properties");
     *   }
     * </pre>
     * @return ?
     * @throws IOException IOException
    */
    protected abstract URL getPath() throws IOException;

    protected URL classpath2URL(final String name) throws MalformedURLException {
        String configName = name;
        if (configName.charAt(0) == '/') {
            configName = name.replaceAll("^/", "");
        }
        return this.getClass().getResource("/" + configName);
    }

    /**
     * ?keyString
     * 
     * @param key key
     * @return value
     */
    public String getString(String key) {
        return properties.getProperty(key);
    }

    /**
     * ?keybooleantrue/false
     * 
     * @param key key
     * @return value
     */
    public boolean getBoolean(String key) {
        String value = properties.getProperty(key);
        return BooleanUtils.toBoolean(value);
    }

    /**
     * ?keyint
     * 
     * @param key key
     * @return value
     */
    public int getInt(String key) {
        String value = properties.getProperty(key);
        return NumberUtils.toInt(value, 0);
    }

    /**
     * ?keybyte
     * 
     * @param key key
     * @return value
     */
    public byte getByte(String key) {
        String value = properties.getProperty(key);
        return NumberUtils.toByte(value);
    }

    /**
     * ?keyint
     * 
     * @param key key
     * @return value
     */
    public long getLong(String key) {
        String value = properties.getProperty(key);
        return NumberUtils.toLong(value, 0);
    }
}