在web和非web环境都可以使用的属性文件属性读取java代码

代码如下:

package com.test;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class PropManager {

	private static final Log log = LogFactory.getLog(PropManager.class);

	public static Properties prop = null;
	static {
		prop = new Properties();

		InputStream in=new PropManager().getClass().getResourceAsStream("jdbc.properties");
		log.info("start load jdbc.properties config file ! in===== "+in);
		try {
			log.info("start load jdbc.properties config file ! ");
			prop.load(in);
			log.info("success load jdbc.properties config file done! ");
		} catch (IOException e1) {
			e1.printStackTrace();
			log.error(" load jdbc.properties config failure! ",e1);
		}
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		String jdbcUrl=prop.getProperty("jdbc.test.url");
		String jdbcUsername = prop.getProperty("jdbc.test.username");
		String jdbcPassword = prop.getProperty("jdbc.test.password");
		System.out.println("jdbcUrl=="+jdbcUrl);
		System.out.println("jdbcUsername=="+jdbcUsername);
		System.out.println("jdbcPassword=="+jdbcPassword);

		System.out.println("jdbcPassword=="+getProp("jdbc.admin.password"));

	}

	public static String getProp(String key)
	{
		return prop.getProperty(key);
	}

}

属性文件:

jdbc.properties:

内容如下:

#
jdbc.test.url=jdbc:mysql://192.168.0.1:3316/test?characterEncoding=GBK
jdbc.test.username=root
jdbc.test.password=123456

执行:输出:

2012-12-25 18:06:02,711 INFO [main] - com.test.PropManager.<clinit>(20) | start load jdbc.properties config file ! in=====
java.io.BufferedInputStream@14d3343
2012-12-25 18:06:02,711 INFO [main] - com.test.PropManager.<clinit>(22) | start load jdbc.properties config file !

2012-12-25 18:06:02,711 INFO [main] - com.test.PropManager.<clinit>(24) | success load jdbc.properties config file done!

jdbcUrl==jdbc:mysql://192.168.0.1:3316/test?characterEncoding=GBK
jdbcUsername==root
jdbcPassword==123456
jdbcPassword==123456

特别注意如下路径写法:

InputStream in=new PropManager().getClass().getResourceAsStream("jdbc.properties");

同时 保持 PropManager类和属性文件jdbc.properties:在一个目录下.