common-configuration的一些应用
此程序依赖commons-configuration-1.6.jar和commons-lang-2.6.jar两个jar包。
需要先在工程的src目录下建立如下几个文件：
config.properties代码：
ip = 127.0.0.1 port = 8081 id = 111 application.name = Killer App application.version = 1.6.2 application.title = ${application.name} ${application.version} keys = cn,com,org,uk,edu,jp,hkenname = include = configiiff.propertieskeysh = cn/com/org/uk/edu/jp/hkmyname =shihuan
<?xml version="1.0" encoding="UTF-8"?><gui-definition> <colors> <background>#808080</background> <text>#000000</text> <header>#008000</header> <link normal="#000080" visited="#800080"/> <default>${colors.header}</default> </colors> <rowsPerPage>15</rowsPerPage> <buttons> <name>OK,Cancel,Help</name> <name>Yes,No,Cancel</name> </buttons> <numberFormat pattern="###\,###.##"/> </gui-definition><?xml version="1.0" encoding="UTF-8"?><database> <tables> <table tableType="system"> <name>users</name> <fields> <field> <name>uid</name> <type>long</type> </field> <field> <name>uname</name> <type>java.lang.String</type> </field> <field> <name>firstName</name> <type>java.lang.String</type> </field> <field> <name>lastName</name> <type>java.lang.String</type> </field> <field> <name>email</name> <type>java.lang.String</type> </field> </fields> </table> <table tableType="application"> <name>documents</name> <fields> <field> <name>docid</name> <type>long</type> </field> <field> <name>name</name> <type>java.lang.String</type> </field> <field> <name>creationDate</name> <type>java.util.Date</type> </field> <field> <name>authorID</name> <type>long</type> </field> <field> <name>version</name> <type>int</type> </field> </fields> </table> </tables> </database>
; last modified 28 April 2011 by ShiHuan[owner]name=ShiHuanorganization=Acme Products [database]server=192.168.2.67 ; use IP address in case network name resolution is not workingport=1521
import java.util.Collection;import java.util.Iterator;import java.util.List;import java.util.Set;import org.apache.commons.configuration.AbstractConfiguration;import org.apache.commons.configuration.AbstractFileConfiguration;import org.apache.commons.configuration.CompositeConfiguration;import org.apache.commons.configuration.Configuration;import org.apache.commons.configuration.ConfigurationException;import org.apache.commons.configuration.INIConfiguration;import org.apache.commons.configuration.PropertiesConfiguration;import org.apache.commons.configuration.XMLConfiguration;import org.apache.log4j.Logger;public class TestConfiguration {static Logger logger = Logger.getLogger(TestConfiguration.class);public static void readProperties(){//注意路径默认指向的是classpath的根目录 Configuration config = null;try {config = new PropertiesConfiguration("config.properties");String ip = config.getString("ip");System.out.println(ip);int port = config.getInt("port"); System.out.println(port);String title = config.getString("application.title"); System.out.println(title);//再举个Configuration的比较实用的方法吧,在读取配置文件的时候有可能这个键值对应的值为空，那么在下面这个方法中 //你就可以为它设置默认值。比如下面这个例子就会在test.properties这个文件中找id的值，如果找不到就会给id设置值为123 //这样就保证了java的包装类不会返回空值。虽然功能很简单，但是很方便很实用。 Integer id = config.getInteger("id", new Integer(123)); System.out.println(id);//config.setProperty("enname", "Hello"); //((AbstractFileConfiguration) config).save();((AbstractFileConfiguration) config).isAutoSave(); config.setProperty("enname", "Hello"); String emmname = config.getString("enname");System.out.println(emmname);//如果在properties 文件中有如下属性keys=cn,com,org,uk,edu,jp,hk //可以实用下面的方式读取： String[] keys1 = config.getStringArray("keys"); for(int i=0; i<keys1.length; i++){System.out.println(keys1[i]);}System.out.println();System.out.println();List keys2 = config.getList("keys");for (Iterator iterator = keys2.iterator(); iterator.hasNext();) {String strKeys = (String) iterator.next();System.out.println(strKeys);}String myname = config.getString("myname");System.out.println(myname);} catch (ConfigurationException e) {logger.error(e.getMessage());}}public static void readPropertieshh(){try {AbstractConfiguration.setDefaultListDelimiter('/'); //设置指定分隔符 Configuration config = new PropertiesConfiguration("configiiff.properties"); String[] keys1 = config.getStringArray("keysh"); for(int i=0; i<keys1.length; i++){System.out.println(keys1[i]);}System.out.println();System.out.println();List keys2 = config.getList("keysh");for (Iterator iterator = keys2.iterator(); iterator.hasNext();) {String strKeys = (String) iterator.next();System.out.println(strKeys);}} catch (ConfigurationException e) {logger.error(e.getMessage());}}public static void readXml(){try {XMLConfiguration config = new XMLConfiguration("xmltest.xml");/** *<colors> * <background>#808080</background> * <text>#000000</text> * <header>#008000</header> * <link normal="#000080" visited="#800080"/> * <default>${colors.header}</default> *</colors> *这是从上面的xml中摘抄的一段，我们现在来解析它， *colors是根标签下的直接子标签，所以是顶级名字空间 */ String backColor = config.getString("colors.background");System.out.println(backColor);String textColor = config.getString("colors.text"); System.out.println(textColor);//现在我们知道了如何读取标签下的数据，那么如何读标签中的属性呢？看下面 //<link normal="#000080" visited="#800080"/> String linkNormal = config.getString("colors.link[@normal]"); System.out.println(linkNormal);//还支持引用呢！ //<default>${colors.header}</default> String defColor = config.getString("colors.default"); System.out.println(defColor);//也支持其他类型，但是一定要确定类型正确，否则要报异常哦 //<rowsPerPage>15</rowsPerPage> int rowsPerPage = config.getInt("rowsPerPage");System.out.println(rowsPerPage);//加属性config.addProperty("shihuan", "shihuan");config.addProperty("updatehala", "updatehala");System.out.println(config.getString("shihuan"));System.out.println(config.getString("updatehala"));//获得同名结点的集合List buttons = config.getList("buttons.name"); for(Object button : buttons){ System.out.println(button.toString()); }System.out.println();System.out.println();//取消分隔符XMLConfiguration configList = new XMLConfiguration();configList.setDelimiterParsingDisabled(true);configList.setFileName("xmltest.xml"); configList.load();List buttonsList = configList.getList("buttons.name"); for(Object buttonList : buttonsList){ System.out.println(buttonList.toString()); }//更复杂的xml文件XMLConfiguration configXml = new XMLConfiguration(); configXml.setDelimiterParsingDisabled(true); configXml.setFileName("database.xml"); configXml.load(); Object prop = configXml.getProperty("tables.table.name"); if(prop instanceof Collection) { System.out.println("Number of tables: " + ((Collection) prop).size()); } //return users System.out.println(configXml.getProperty("tables.table(0).name")); //return system System.out.println(configXml.getProperty("tables.table(0)[@tableType]")); //return documents System.out.println(configXml.getProperty("tables.table(1).name")); //return null,因为只有两个table所以这个值为null System.out.println(configXml.getProperty("tables.table(2).name")); //return [docid, name, creationDate, authorID, version] //如果所要找的节点不存在唯一值，则返回Collection类型 System.out.println(configXml.getProperty("tables.table(1).fields.field.name")); //[long, long] //与上面的相同，返回值不唯一 System.out.println(configXml.getProperty("tables.table.fields.field(0).type")); //return creationDate System.out.println(configXml.getProperty("tables.table(1).fields.field(2).name")); } catch (ConfigurationException e) {logger.error(e.getMessage());} }public static void readIni(){try {INIConfiguration config = new INIConfiguration("config.ini");String basestr = config.getBasePath();System.out.println(basestr);String filestr = config.getFileName();System.out.println(filestr);String pathstr = config.getPath();System.out.println(pathstr);Set zykhstr = config.getSections();for(Object setVal : zykhstr){System.out.println(setVal.toString());}System.out.println();System.out.println();for(Iterator iter = config.getKeys(); iter.hasNext();){System.out.println(iter.next().toString());System.out.println(config.getString(iter.next().toString()));}} catch (ConfigurationException e) {logger.error(e.getMessage());} }/** * @param args */public static void main(String[] args) {//TestConfiguration.readProperties();//TestConfiguration.readPropertieshh();//TestConfiguration.readXml();TestConfiguration.readIni();}}