dbconfig.java

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/*
 * Created on 2005-10-16
 * Author 曹汕
 * Version 1.0
 * Copyright by CS.SSPKU Inc. All rights reserved. 
 */
package com.struts.utils;
import java.util.*;
import java.io.*;
import java.lang.*;



/**
 *从Database.properties中获取数据库配置信息 
 */


public class DBConfig  {
	private final static  String filename="Database.properties";
	private static Properties ps;
	
		//装载properties文件
	private Properties LoadProperties() throws Exception{
		
		InputStream is =new FileInputStream(filename);
		ps=new Properties();
		ps.load(is);
		if(is!=null)is.close();
		return ps;
	}
	
		//消除相应字段的值两端的空格
	public String getValue(String key){
		if(ps==null)
			try {
				ps=LoadProperties();
			} catch (Exception e) {
				e.printStackTrace();
			}
		return ps.getProperty(key).trim();
		}
	
	public static void main(String[] ats){
		DBConfig dbconfig=new DBConfig();
		String DriverName=dbconfig.getValue("DB.DriverName");
		System.out.println(DriverName);
		}
}