[CONFIGURATION-685] Implicit external dependency on DynaBean while loading a config

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Assignee: Unassigned
• Reporter: Fabien Renaud
• Created: 22/Dec/17 09:14
• Updated: 22/Dec/17 22:46
• Resolved: 22/Dec/17 17:22

Description

100% repro.

Getting an exception: DynaBean not found when trying to load an apache config file.
Exception:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/beanutils/DynaBean
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at com.sun.proxy.$Proxy0.<clinit>(Unknown Source)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:739)
        at org.apache.commons.configuration2.builder.fluent.Parameters.createParametersProxy(Parameters.java:307)
        at org.apache.commons.configuration2.builder.fluent.Parameters.fileBased(Parameters.java:186)
        at com.example.App.main(App.java:13)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.beanutils.DynaBean
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 11 more

when running:

package com.example;

import org.apache.commons.configuration2.YAMLConfiguration;
import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.ex.ConfigurationException;

class App {

  public static void main(String[] args) throws ConfigurationException {
    Parameters params = new Parameters();
    FileBasedConfigurationBuilder<YAMLConfiguration> builder1 = new FileBasedConfigurationBuilder<>(YAMLConfiguration.class)
      .configure(params.fileBased().setFileName("file.yml"));

    YAMLConfiguration conf = builder1.getConfiguration();
  }

}

with build.gradle:

apply plugin: 'java'
apply plugin: 'application'

mainClassName = "com.example.App"

repositories {
    jcenter()
}

dependencies {
  compile group: 'org.apache.commons', name: 'commons-configuration2', version: '2.2'
}