commons-configuration读取配置文件

关键工具类:

1. 1. import org.apache.commons.configuration.CompositeConfiguration;
   2. import org.apache.commons.configuration.ConfigurationException;
   3. import org.apache.commons.configuration.PropertiesConfiguration;   //</horsepower>
   4. </engine-config>

   2.读取properties文件
   

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1. import org.apache.commons.configuration.Configuration;
2. import org.apache.commons.configuration.PropertiesConfiguration;
3. public class PropertiesConfigurationExample {
4. public static void main(String[] args) throws Exception {
5. Configuration config = new PropertiesConfiguration(
6. "com/discursive/jccook/configuration/global.properties" );
7. System.out.println( "Speed: " + config.getFloat("speed"));
8. System.out.println( "Names: " + config.getString("name"));
9. }
10. }

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1. global.properties
2. threads.maximum=50
3. threads.minimum=20
4. timeout=15.52
5. interactive=true
6. color=red
7. speed=50
8. name=Default User
9. email=default@email.com
10. region=Earth

3.当有多个配置文件时,就利用ConfigurationFactory对象来访问多个不同的配置资源

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1. import java.net.URL;
2. import java.util.List;
3. import org.apache.commons.configuration.Configuration;
4. import org.apache.commons.configuration.ConfigurationFactory;
5. public class PropertiesXmlConfigurationExample {
6. public static void main(String[] args) throws Exception {
7. PropertiesXmlConfigurationExample example = new PropertiesXmlConfigurationExample();
8. ConfigurationFactory factory = new ConfigurationFactory();
9. URL configURL = example.getClass().getResource("additional-xml-configuration.xml");
10. factory.setConfigurationURL( configURL );
11. Configuration config = factory.getConfiguration();
12. List startCriteria = config.getList("start-criteria.criteria");
13. System.out.println( "Start Criteria: " + startCriteria );
14. int horsepower = config.getInt("horsepower");
15. System.out.println( "Horsepower: " + horsepower );
16. }
17. }

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1. additional-xml-configuration.xml
2. <?xml version="1.0" encoding="ISO-8859-1" ?>
3. <configuration>
4. <properties fileName="global.properties"/>
5. <xml fileName="global.xml"/>
6. </configuration>

4.CompositeConfiguration,手动加上两个配置文件

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1. import org.apache.commons.configuration.CompositeConfiguration;
2. import org.apache.commons.configuration.ConfigurationException;
3. import org.apache.commons.configuration.PropertiesConfiguration;
4. import org.apache.commons.configuration.XMLConfiguration;
5. public class Test {
6. /**
7. * @param args
8. * @throws ConfigurationException
9. */
10. public static void main(String[] args) throws ConfigurationException {
11. // TODO Auto-generated method stub
12. CompositeConfiguration config = new CompositeConfiguration();
13. config.addConfiguration(new PropertiesConfiguration(
14. "com/discursive/jccook/configuration/global.properties" ));
15. config.addConfiguration( new XMLConfiguration
16. ("com/discursive/jccook/configuration/global.xml"));
17. List startCriteria = config.getList("start-criteria.criteria");
18. int horsepower = config.getInt("horsepower");
19. System.out.println( "Start Criteria: " + startCriteria );
20. System.out.println(horsepower);
21. System.out.println( "Speed: " + config.getFloat("speed"));
22. System.out.println( "Names: " + config.getString("name"));
23. }
24. }
25. 来源： http://blog.csdn.net/zztp01/article/details/6707928