本文給出了一個例子,說明了如何利用configuration對properties的屬性進行添加刪除修改操作

下載地址　：　 http://jakarta.apache.org/commons/configuration

依賴jar　：　　
?commons-collections-3.2.jar
?commons-configuration-1.3.jar
?commons-lang-2.2.jar
?commons-logging-1.1.jar
?commons-logging-adapters-1.1.jar
?commons-logging-api-1.1.jar

讀取properties文件的例子:

配置文件:

addProperties.properties

greeting = Hello,how are you?
colors.background = #FFFFFFFF
colors.pie = #FF0000/#00FF00/#0000FF
colors.graph = #808080/#00FFCC/#6422FF

usergui.properties

# Properties definining the GUI
colors.background = #FFFFFF
colors.foreground = #000080

window.width = 500
window.height = 300

# chart colors
colors.pie = #FF0000, #00FF00, #0000FF

# chart colors 這種發(fā)方式同上
#colors.pie = #FF0000;
#colors.pie = #00FF00;
#colors.pie = #0000FF;

application.name = Killer App
application.version = 1.6.2

application.title = ${application.name} ${application.version}

?

實現(xiàn)類 :

import java.awt.Dimension;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;

/**
?* <p>文件名稱: Properties.java </p>
?* <p>文件描述:? 它還提供了自動存盤和自動更新的功能:Automatic Reloading Automatic Saving</p>
?* <p>版權(quán)所有: 版權(quán)所有(C)2001-2004</p>
?* <p>公??? 司: </p>
?* <p>內(nèi)容摘要: 無</p>
?* <p>其他說明: 無</p>
?* <p>創(chuàng)建日期：2006-11-9</p>
?* <p>完成日期：2006-11-9</p>
?* <p>修改記錄1: // 修改歷史記錄，包括修改日期、修改者及修改內(nèi)容</p>
?* <pre>
?*??? 修改日期：
?*??? 版 本 號：
?*??? 修 改 人：
?*??? 修改內(nèi)容：
?* </pre>
?* <p>修改記錄2：…</p>
?* @version 1.0
?* @author?楊威?*/

/**
?* @author yangwei0048700358
?*
?*/
public class Properties {
??? public static void readProperties() {
??????? try {

??????????? //讀取常規(guī)數(shù)據(jù)
??????????? PropertiesConfiguration config = new PropertiesConfiguration(
??????????????????? "usergui.properties");
??????????? String backColor = config.getString("colors.background");
??????????? Dimension size = new Dimension(config.getInt("window.width"),
??????????????????? config.getInt("window.height"));
??????????? System.out.println("height is " + size.getHeight() + " width is " +
??????????????? size.getWidth() + " backGround is" + backColor);

??????????? //在這個usergui.properties 文件中也可以引用其它的文件，具體語法如下：
//??????????? # usergui.properties
//
//??????????? include = colors.properties
//??????????? include = sizes.properties

??????????? //Lists and arrays 讀取數(shù)組屬性

??????????? //以數(shù)組的方式獲得
//??????????? String[] colors = config.getStringArray("colors.pie");

??????????? //list方式
??????????? List colorList = config.getList("colors.pie");
??????????? Iterator iterator=colorList.iterator();
??????????? while(iterator.hasNext()){
??????????????? System.out.println("the element is "+iterator.next());
??????????? }

?????????? //Variable Interpolation
??????????? String title = config.getString("application.title");
??????????? System.out.println("title is "+title);

??????? } catch (ConfigurationException e) {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }
??? }

??? public static void setProperties(){
??????? //出始化一個文件
??????? addProperties();
??????? File file = new File("addProperties.properties");
//????? 寫入數(shù)據(jù)
??????? PropertiesConfiguration config=null;
??????? try
??????? {
??????????? config = new PropertiesConfiguration(file.getAbsolutePath());
??????? }
??????? catch (ConfigurationException e)
??????? {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }
??????? config.setProperty("colors.background", "#FFFFFFFF");
??????? try
??????? {
??????????? config.save();
??????????? //另一種存盤的方式 config.save("usergui.backup.properties);
??????? }
??????? catch (ConfigurationException e)
??????? {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }

??? }

??? public static void addProperties(){
??????? //出始化一個文件
??????? File file = new File("addProperties.properties");
??????? if(file.exists()){
??????????? file.delete();
??????? }
??????? try
??????? {
??????????? file.createNewFile();
??????????? System.out.println("文件出始化成功");
??????? }
??????? catch (IOException e)
??????? {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }

??????? //寫入數(shù)據(jù)
??????? PropertiesConfiguration config=null;
??????? try
??????? {
??????????? config = new PropertiesConfiguration(file.getAbsolutePath());
??????? }
??????? catch (ConfigurationException e)
??????? {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }

//????? Change the list delimiter character to a slash
??????? config.setListDelimiter('/');
//???????? Now add some properties
??????? config.addProperty("greeting", "Hello, how are you?");
??????? config.addProperty("colors.background", "#000000");
??????? config.addProperty("colors.pie",
????????? new String[] { "#FF0000", "#00FF00", "#0000FF" });
??????? config.addProperty("colors.graph", "#808080/#00FFCC/#6422FF");

//???????? Access data
??????? String salut = config.getString("greeting");
??????? System.out.println("salut : "+salut);
??????? String[] colGraph = config.getStringArray("colors.graph");
??????? System.out.println("colGraph : "+colGraph);
??????? String firstPieColor = config.getString("colors.pie");
??????? //另一種方式List colPie = config.getList("colors.pie");
??????? System.out.println("firstPieColor : "+firstPieColor);

??????? //存盤
??????? try
??????? {
??????????? config.save();
??????? }
??????? catch (ConfigurationException e)
??????? {
??????????? // TODO Auto-generated catch block
??????????? e.printStackTrace();
??????? }

??? }
??? /**
???? * @param args
???? */
??? public static void main(String[] args) {
??????? readProperties();
??????? setProperties();
??????? // TODO Auto-generated method stub
??? }
}