PropertiesUtil

package com.neptune.common.utils.properties;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

public class PropertiesUtil{

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

    /**
     * 默认编码为UTF-8
     */
    private static String DEFAULT_ENCODING = "UTF-8";

    private static Properties prop = new Properties();

    public PropertiesUtil(String fileName){
        readProperties(fileName);
    }

    /**
     * 读取配置文件
     * 
     * @param fileName
     */
    public void readProperties(String fileName){
        try{
            InputStreamReader inputStream = new InputStreamReader(this.getClass().getClassLoader().getResourceAsStream(fileName), DEFAULT_ENCODING);
            prop.load(inputStream);
            InputStream in = PropertiesUtil.class.getResourceAsStream("/" + fileName);
            BufferedReader buf = new BufferedReader(new InputStreamReader(in));
            prop.load(buf);
        }catch (IOException e){
            LOGGER.error("reading the configuration file is abnormal");
        }
    }

    /**
     * 根据key读取对应的value
     * 
     * @param key
     * @return
     */
    public static String getProperty(String key){
        return prop.getProperty(key);
    }

    /**
     * 获取所有的配置信息
     * @return
     * @return Map<?,?>
     * @throws
     */
    public Map<?, ?> getAll(){
        Map<String, String> map = new HashMap<String, String>();
        Enumeration<?> enu = prop.propertyNames();
        while (enu.hasMoreElements()){
            String key = (String) enu.nextElement();
            String value = prop.getProperty(key);
            map.put(key, value);
        }
        return map;
    }

}

转载于:https://my.oschina.net/easy3399/blog/1593497