nms-nmsserver/src/com/nms/server/common/Config.java

package com.nms.server.common;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Properties;

import javax.swing.JOptionPane;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

/**
 * 获取和保存myconfig信息的类
 * 
 * @author ZGGG3
 * 
 */
public class Config {
	private static Logger logger = Logger.getLogger(Config.class);
	private static Properties properties;
	private static String url = null;
	public static Config config = Config.getInstance();
//	private static ResourceBundle resource;
	
	public static String getSystemDir() {
		return System.getProperty("user.dir");
	}

	/**
	 * 单例 初始化获取实例
	 * 
	 * @return
	 */
	public static Config getInstance() {
		if (config == null)
			return new Config();
		return config;
	}

	/**
	 * 单例 重新读取文件已获取参数
	 * 
	 * @return
	 */
	public static Config reinitialize() {
		config = null;
		return new Config();
	}

	/**
	 * 构造函数私有，用于单例实例
	 */
	private Config() {
		//执行参数更新及检查
		ConfigUpdate.getInstance();
		//加载配置文件
		URL urlObj = Config.class.getClassLoader().getResource("myconfig.properties");
//		resource = ResourceBundle.getBundle(DefaultConfig.class.getName());
		if(urlObj==null){
//			JOptionPane.showMessageDialog(null, "未找到参数配文件！\n请运行"+Constants.COMMON_CONFIG_EXE_NAME+"初始化参数配置", "错误", JOptionPane.ERROR_MESSAGE);
			JOptionPane.showMessageDialog(null, "Parameter configuration file not found! \nPlease run "+Constants.COMMON_CONFIG_EXE_NAME+"initialization parameter configuration", "Error", JOptionPane.ERROR_MESSAGE);
//			JOptionPane.showMessageDialog(null, "i18n_server.Config.initConfig_n81i"+Constants.COMMON_CONFIG_EXE_NAME+"i18n_server.Config.initConfig.init_n81i", "i18n_server.Config.error_n81i", JOptionPane.ERROR_MESSAGE);
			System.exit(0);
		}else{
			url = urlObj.getPath().replaceAll("%20", " ");
		}
		properties = new Properties();
		try {
			properties.load(new FileInputStream(url));
		} catch (IOException e) {
			logger.error("Reading properties file error"+"",e);
		}
	}
	/**
	 * 根据name获取value
	 * 
	 * @param name
	 * @return
	 */
	public static Boolean getBoolan(String name,Boolean defaultValue) {
		try {
			String val = getString(name,defaultValue==null?null:defaultValue.toString());
			return StringUtils.isEmpty(val)? null : Boolean.valueOf(val);
		} catch (Exception e) {
			logger.error("Digital formatting error", e);
		}
		return null;
	}
	/**
	 * 根据name获取value
	 * 
	 * @param name
	 * @return
	 */
	public static Integer getInteger(String name,Integer defaultValue) {
		try {
			String val = getString(name,defaultValue==null?null:defaultValue.toString());
			return StringUtils.isEmpty(val)? null : Integer.parseInt(val);
		} catch (Exception e) {
			logger.error("Digital formatting error", e);
		}
		return null;
	}
	/**
	 * 根据name获取value
	 * 
	 * @param name
	 * @return
	 */
	public static String getString(String name,String defaultValue) {
		String str = null;
		/* 获取参数值：先从资源文件取值，如果为空，则从默认参数配置中取值 */
		str = properties.getProperty(name,defaultValue);
			
		if(StringUtils.isNotEmpty(str)){
			str = str.trim();
		}else{
			logger.warn("Resource configuration file abnormality >> "+name+" Value is empty");
		}

		return str;
	}

	/**
	 * 向资源配置文件中添加或更新一个键值对
	 * 
	 * @time Jul 7, 2011-3:52:45 PM
	 * @param key
	 * @param value
	 */
	public static void setValueByName(String key, String value) {
		// 添加或更新键值对
		properties.setProperty(key, value);
		try {
			// 保存到文件
			if (url != null && !"".equals(url)) {
				String fileName = url.substring(
						url.lastIndexOf(File.separator), url.length());
				properties.store(new FileOutputStream(url), fileName);
			}
		} catch (FileNotFoundException e) {
			logger.error("The properties file Set Value file does not find ERROR "+"",e);
		} catch (IOException e) {
			logger.error("Properties file Set Value set value ERROR"+"",e);
		}
	}
/*
	// 测试主函数
	 public static void main(String[] args) {
		 Config cfg=new Config();
		 String oid="mission.file.download.dir";
		 System.out.println("---------"+cfg.getString(oid));
	}
	 */
}