[Commons Configuration] Comment utiliser SubsetConfiguration ?

Bonjour,

Mon code :
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Code:

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package com.test.configuration;
 
import org.apache.commons.configuration.BaseConfiguration;
import org.apache.commons.configuration.SubsetConfiguration;
 
public class testCommonsConfig001 {
 
        public static void main(String[] args) {
 
                BaseConfiguration config = new BaseConfiguration();
 
                config.addProperty("prefix1.car01", 11.1);
                config.addProperty("prefix1.car02", 22.2);
                config.addProperty("prefix1.car03", 33.3);
 
                config.addProperty("prefix2.car01", 11.1);
                config.addProperty("prefix2.car02", 22.2);
                config.addProperty("prefix2.car03", 33.3);
 
                System.out.println(config.getDouble("prefix1.car01"));
                System.out.println(config.getDouble("prefix1.car02"));
                System.out.println(config.getDouble("prefix1.car03"));
 
                SubsetConfiguration subsetPre01 = new SubsetConfiguration(config,
                                "prefix1");
 
                System.out.println(subsetPre01.getDouble("car01"));
 
        }
}

J'obtiens ce message d'erreur :
---------------------------

Citation:

Exception in thread "main" java.util.NoSuchElementException: 'car01' doesn't map to an existing object
at org.apache.commons.configuration.AbstractConfiguration.getDouble(AbstractConfiguration.java:734)
at com.test.configuration.testCommonsConfig001.main(testCommonsConfig001.java:30)

Pourquoi car01 n'existe-t-il pas ?

Merci,

package com.test.configuration; import java.util.Iterator; import org.apache.commons.configuration.BaseConfiguration; import org.apache.commons.configuration.Configuration; public class testCommonsConfig002 { public static void main(String[] args) { BaseConfiguration config = new BaseConfiguration(); config.addProperty("prefix1.car01", 11.1); config.addProperty("prefix1.car02", 22.2); config.addProperty("prefix1.car03", 33.3); config.addProperty("prefix2.car01", 11.1); config.addProperty("prefix2.car02", 22.2); config.addProperty("prefix2.car03", 33.3); System.out.println(config.getDouble("prefix1.car01")); System.out.println(config.getDouble("prefix1.car02")); System.out.println(config.getDouble("prefix1.car03")); Configuration subsetPre01 = config.subset("prefix1"); System.out.println(subsetPre01.getDouble("car01")); Iterator keys = subsetPre01.getKeys(); while (keys.hasNext()) { String key = (String) keys.next(); System.out.println(key); } } }