属性配置文件工具类代码,Java代码库,德仔网

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【Java】属性配置文件工具类

作者:雅玉 / 发布于2016/12/6/ 815

属性配置文件工具类

package com.struts2.jquery.utils;  
  
import java.io.FileInputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.util.Properties;  
  
import org.apache.log4j.Logger;  
/**  
 *   
 * Title: crm  
 *  
 * Description: 操作属性配置文件工具类  
 *  
 * Copyright: Copyright (c) 2008  
 *  
 * Company: Newland  
 *  
 * @author yaoxj  
 * @version 1.0  2008-12-26  
 */  
public final class PropertiesUtils  
{  
  private static Logger log = Logger.getLogger(PropertiesUtils.class);  
  private static PropertiesUtils properUtils = null;  
  private static Properties prop = new Properties();  
  
  static  
  {  
      _load();  
  }  
  
  private PropertiesUtils() {  
    _load();  
  }  
  
  public static PropertiesUtils getInstance() {  
      _load();  
    return properUtils;   
   }   
    
  
  private static void _load() {   
      prop.clear();  
      InputStream ips=null;  
      try {  
        ips=getResourceAsStream("crm.properties");  
        prop.load(ips);  
    } catch (Exception e) {  
        log.error("无法载入属性配置文件！", e);  
    }finally{  
        try {  
            if(ips!=null){  
            ips.close();  
            ips=null;  
            }  
        } catch (IOException e) {  
              
            e.printStackTrace();  
        }  
    }  
  }   
    private static InputStream getResourceAsStream(String resource) throws IOException {  
        InputStream in = PropertiesUtils.class.getClassLoader().getResourceAsStream(resource);  
        if(in == null){  
          in = ClassLoader.getSystemResourceAsStream(resource);  
        }  
        if(in == null){  
          in = new FileInputStream(resource);  
        }  
        if(in == null)  
          throw new IOException("无法读取资源文件: " + resource);  
        return in;  
    }  
      
  public static String getPropsValue(String key) { String value = "";  
    if (prop.containsKey(key))  
      value = prop.getProperty(key);  
    else  
      log.equals("属性文件中没有包含这个属性！");  
  
    return value;  
  }  
  
  public static String getPropsValue_Default(String key, String defaultValue)  
  {  
    return prop.getProperty(key, defaultValue);  
  }  
    
}

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