2.Properties操作工具类

public class ConfigKit
{
   
    private static Logger logger = Logger.getLogger(ConfigKit.class);
       
    /**
     * 增加属性文件值
     * @param key
     * @param value
     */
    public static void addProperties(String key[], String value[], String file)
    {
        Properties iniFile = getProperties(file);
        FileOutputStream oFile = null;
        try
        {
            iniFile.put(key, value);
            oFile = new FileOutputStream(file, true);
            iniFile.store(oFile, "modify properties file");
        }
        catch (FileNotFoundException e)
        {
            logger.warn("do " + file + " FileNotFoundException:", e);
        }
        catch (IOException e)
        {
            logger.warn("do " + file + " IOException:", e);
        }
        finally
        {
            try
            {
                if (oFile != null)
                {
                    oFile.close();
                }
            }
            catch (IOException e)
            {
                logger.warn("do " + file + " IOException:", e);
            }
        }
    }
   
    /**
     * 读取配置文件
     * @return
     */
    public static Properties getProperties(String file)
    {
        Properties pro = null;
        // 从文件mdxbu.properties中读取网元ID和模块ID信息
        FileInputStream in = null;
        try
        {
            in = new FileInputStream(file);
            pro = new Properties();
            pro.load(in);
           
        }
        catch (Exception e)
        {
            logger.warn("Read " + file + " IOException:", e);
        }
        finally
        {
            try
            {
                if (in != null)
                {
                    in.close();
                }
            }
            catch (IOException e)
            {
                logger.warn("Read " + file + " IOException:", e);
            }
        }
        return pro;
    }
   
    /**
     * 保存属性到文件中
     * @param pro
     * @param file
     */
    public static void saveProperties(Properties pro, String file)
    {
        if (pro == null)
        {
            return;
        }
        FileOutputStream oFile = null;
        try
        {
            oFile = new FileOutputStream(file, false);
            pro.store(oFile, "modify properties file");
        }
        catch (FileNotFoundException e)
        {
            logger.warn("do " + file + " FileNotFoundException:", e);
        }
        catch (IOException e)
        {
            logger.warn("do " + file + " IOException:", e);
        }
        finally
        {
            try
            {
                if (oFile != null)
                {
                    oFile.close();
                }
            }
            catch (IOException e)
            {
                logger.warn("do " + file + " IOException:", e);
            }
        }
    }
   
    /**
     * 修改属性文件
     * @param key
     * @param value
     */
    public static void updateProperties(String key, String value, String file)
    {
        //key为空则返回
        if (key == null || "".equalsIgnoreCase(key))
        {
            return;
        }
        Properties pro = getProperties(file);
        if (pro == null)
        {
            pro = new Properties();
        }
        pro.put(key, value);
       
        //保存属性到文件中
        saveProperties(pro, file);
    }
}