采用commons-configuration包实现属性文件读取的工具类

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代码如下:

package com.yanek.base;import org.apache.commons.configuration.CompositeConfiguration;import org.apache.commons.configuration.ConfigurationException;import org.apache.commons.configuration.PropertiesConfiguration;public class PropManager {/** * @param args */public static void main(String[] args) {String jdbcUrl = PropManager.getInstance().getProperty("jdbc.cms.url");String jdbcUsername = PropManager.getInstance().getProperty("jdbc.cms.username");String jdbcPassword = PropManager.getInstance().getProperty("jdbc.cms.password");System.out.println("jdbcUrl:"+jdbcUrl);System.out.println("jdbcUsername:"+jdbcUsername);System.out.println("jdbcPassword:"+jdbcPassword);System.out.println(PropManager.getInstance());System.out.println(PropManager.getInstance());}private PropManager() {}private static PropManager propManager;public synchronized static PropManager getInstance() {if (propManager == null) {propManager = new PropManager();}return propManager;}public static CompositeConfiguration config = new CompositeConfiguration();static {try {config.addConfiguration(new PropertiesConfiguration("jdbc.properties"));} catch (ConfigurationException e) {e.printStackTrace();}}public String  getProperty(String key){return config.getString(key);}}

测试输出:

jdbcUrl:jdbc:mysql://127.0.0.1:3306/easycms?characterEncoding=UTF8
jdbcUsername:root
jdbcPassword:root
com.yanek.base.PropManager@174cc1f
com.yanek.base.PropManager@174cc1f

使用的包: commons-configuration-1.6.jar

几点说明:

1. 采用了单态设计模式,

2.属性文件在classpath目录下.

3. 采用commons-configuration-1.6.jar来读取属性文件

jdbc.properties文件:

jdbc.cms.url=jdbc:mysql://127.0.0.1:3306/easycms?characterEncoding=UTF8
jdbc.cms.username=root
jdbc.cms.password=root