Read comma separated attributes in Java using configuration2

I have this attribute:

move.patternfile.include = *1a.txt,*2a.txt

I'm trying to put it in the list using Apache Commons configuration2

My code is:

Configurations configs = new Configurations();
AbstractConfiguration config = configs.properties(new File(fileName));
config.setListDelimiterHandler(new DefaultListDelimiterHandler(','));

I can read all the other attributes, but what I want is still a 1 - size list

This is the command to retrieve values:

List<String> linclude = configuration.getList(String.class,"patternfile.include");

Can you help me?

Solution

Based on this, it seems that the delimiter must be set before reading properties from the file The following code works when I run it, but generates a warning

Parameters params = new Parameters();
FileBasedConfigurationBuilder<PropertiesConfiguration> builder =
     new FileBasedConfigurationBuilder<PropertiesConfiguration>(
             PropertiesConfiguration.class).configure(params.fileBased()
             .setListDelimiterHandler(new DefaultListDelimiterHandler(','))
             .setFile(new File("test.properties")));
PropertiesConfiguration config = builder.getConfiguration();

List<String> linclude = config.getList(String.class,"patternfile.include");

System.out.println(linclude.size());
for(String item: linclude){
    System.out.println(item);
}

test. properties

patternfile. include = * 1a. txt,* 2a. txt

yield

two

* 1a. txt

* 2a. txt

This is the warning I see when I run:

Jun 26,2016 2:12:17 AM org.apache.commons.beanutils.FluentPropertyBeanIntrospector introspect
WARNING: Error when creating PropertyDescriptor for public final void org.apache.commons.configuration2.AbstractConfiguration.setProperty(java.lang.String,java.lang.Object)! Ignoring this property.
java.beans.IntrospectionException: bad write method arg count: public final void org.apache.commons.configuration2.AbstractConfiguration.setProperty(java.lang.String,java.lang.Object)
    at java.beans.PropertyDescriptor.findPropertyType(UnkNown Source)
    at java.beans.PropertyDescriptor.setWriteMethod(UnkNown Source)
    at java.beans.PropertyDescriptor.<init>(UnkNown Source)
    at org.apache.commons.beanutils.FluentPropertyBeanIntrospector.createFluentPropertyDescritor(FluentPropertyBeanIntrospector.java:177)
    at org.apache.commons.beanutils.FluentPropertyBeanIntrospector.introspect(FluentPropertyBeanIntrospector.java:140)
    at org.apache.commons.beanutils.PropertyUtilsBean.fetchIntrospectionData(PropertyUtilsBean.java:2234)
    at org.apache.commons.beanutils.PropertyUtilsBean.getIntrospectionData(PropertyUtilsBean.java:2215)
    at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:950)
    at org.apache.commons.beanutils.PropertyUtilsBean.isWriteable(PropertyUtilsBean.java:1466)
    at org.apache.commons.configuration2.beanutils.BeanHelper.isPropertyWriteable(BeanHelper.java:521)
    at org.apache.commons.configuration2.beanutils.BeanHelper.initProperty(BeanHelper.java:357)
    at org.apache.commons.configuration2.beanutils.BeanHelper.initBeanProperties(BeanHelper.java:273)
    at org.apache.commons.configuration2.beanutils.BeanHelper.initBean(BeanHelper.java:192)
    at org.apache.commons.configuration2.beanutils.BeanHelper$BeanCreationContextImpl.initBean(BeanHelper.java:669)
    at org.apache.commons.configuration2.beanutils.Defaultbeanfactory.initBeanInstance(Defaultbeanfactory.java:162)
    at org.apache.commons.configuration2.beanutils.Defaultbeanfactory.createBean(Defaultbeanfactory.java:116)
    at org.apache.commons.configuration2.beanutils.BeanHelper.createBean(BeanHelper.java:459)
    at org.apache.commons.configuration2.beanutils.BeanHelper.createBean(BeanHelper.java:479)
    at org.apache.commons.configuration2.beanutils.BeanHelper.createBean(BeanHelper.java:492)
    at org.apache.commons.configuration2.builder.BasicConfigurationBuilder.createResultInstance(BasicConfigurationBuilder.java:447)
    at org.apache.commons.configuration2.builder.BasicConfigurationBuilder.createResult(BasicConfigurationBuilder.java:417)
    at org.apache.commons.configuration2.builder.BasicConfigurationBuilder.getConfiguration(BasicConfigurationBuilder.java:285)
    at main.Main.main(Main.java:25)

I found this link about this warning message