net.bubble.common.utils.PropertiesUtil.java Source code

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Here is the source code for net.bubble.common.utils.PropertiesUtil.java

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/**
 * Copyright [2015-2017] [https://github.com/bubble-light/]
 *
 * 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 net.bubble.common.utils;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import net.bubble.common.exception.CommonException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PropertiesLoaderUtils;

/**
 * ?
 * @author shiwen_xiao<xiaosw@msn.cn>
 * @since 2015128
 */
public class PropertiesUtil extends PropertyPlaceholderConfigurer {

    /**
     * ? 2015128
     */
    public enum LocationEnum {
        CLASSPATH, FILESYSTEM;
    }

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

    private static Map<String, String> contextProperties;

    /**
     * ?Spring
     * 
     * @return Map<String,String> ?
     */
    public Map<String, String> getContextProperties() {
        return contextProperties;
    }

    /**
     * ?classpath?
     * @param location 
     * @param locationKind ?LocationEnum
     * @return Properties ??
     * @throws CommonException ?
     */
    public Properties loadProperties(String location, LocationEnum locationKind) throws CommonException {
        try {
            Resource resource = null;
            switch (locationKind) {
            case CLASSPATH:
                resource = new ClassPathResource(location);
                break;
            case FILESYSTEM:
                resource = new FileSystemResource(location);
                break;
            }
            return PropertiesLoaderUtils.loadProperties(resource);
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
            throw new CommonException("Read property file has error !", e);
        }
    }

    @Override
    protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props)
            throws BeansException {
        contextProperties = new HashMap<String, String>();
        for (Object key : props.keySet()) {
            if (logger.isDebugEnabled()) {
                logger.debug("load property content: {}={}", String.valueOf(key), props.get(String.valueOf(key)));
            }
            contextProperties.put(String.valueOf(key), String.valueOf(props.get(String.valueOf(key))));
        }
        super.processProperties(beanFactoryToProcess, props);
    }
}