[jira] [Resolved] (CONFIGURATION-794) Unclosed file handle when reading config from JAR file URL

["Gary D. Gregory (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CONFIGURATION-794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary D. Gregory resolved CONFIGURATION-794.
-------------------------------------------
    Fix Version/s: 2.8
       Resolution: Fixed

This fix requires you to disable caching, you will need to update code (from the test), from, for example:
{code:java}
        final FileBasedConfigurationBuilder<PropertiesConfiguration> builder = 
            new FileBasedConfigurationBuilder<>(PropertiesConfiguration.class)
                .configure(new FileBasedBuilderParametersImpl()
                .setURL(url));
{code}
to:
{code:java}
        final FileBasedConfigurationBuilder<PropertiesConfiguration> builder = 
            new FileBasedConfigurationBuilder<>(PropertiesConfiguration.class)
                .configure(new FileBasedBuilderParametersImpl()
                .setURL(url, new URLConnectionOptions().setUseCaches(false)));
{code}
Note the use of {{FileBasedBuilderProperties}}'s
 {{setURL(URL, URLConnectionOptions)}} 
 instead of 
 {{setURL(URL)}}


> Unclosed file handle when reading config from JAR file URL
> ----------------------------------------------------------
>
>                 Key: CONFIGURATION-794
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-794
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 2.7
>            Reporter: Robin Jansohn
>            Priority: Major
>             Fix For: 2.8
>
>
> We read a properties file which is included in a JAR file. Unfortunately we cannot find any method to close the opened file handle after reading the properties.
> This currently means that the JAR file can only be deleted after the JVM shuts down. I'll open a PR which shows the behavior.
> We currently run our code mostly on Windows systems and Oracle JDK8.
> PR: https://github.com/apache/commons-configuration/pull/76



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