Question

Following Getting Started with the AWS SDK for Java tutorial, to run the AwsConsoleApp sample:

java -cp .:/Users/marius/Dev/aws-java-sdk-1.3.8/lib/aws-java-sdk-1.3.8.jar AwsConsoleApp

I get the following issues:

===========================================
Welcome to the AWS Java SDK!
===========================================
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at com.amazonaws.util.VersionInfoUtils.<clinit>(VersionInfoUtils.java:41)
    at com.amazonaws.ClientConfiguration.<clinit>(ClientConfiguration.java:31)
    at com.amazonaws.services.ec2.AmazonEC2Client.<init>(AmazonEC2Client.java:95)
    at AwsConsoleApp.init(AwsConsoleApp.java:93)
    at AwsConsoleApp.main(AwsConsoleApp.java:105)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 5 more

The same full SDK that was loaded in the classpath at compile time is given during runtime as well, so I can’t figure out what’s missing.

Answer 1

Among the SDK prerequisites, you have:

Requires Apache Commons (Codec, HTTP Client, and Logging) third-party packages, which are included in the third-party directory of the SDK.

so I just added them to my .bashrc:

#   Apache Commons Logging
export CLASSPATH=$CLASSPATH:/Users/marius/Dev/aws-java-sdk-1.3.8/third-party/commons-logging-1.1.1/*
#   Apache Commons HTTP Client
export CLASSPATH=$CLASSPATH:/Users/marius/Dev/aws-java-sdk-1.3.8/third-party/httpcomponents-client-4.1.1/*
#   Apache Commons Codec
export CLASSPATH=$CLASSPATH:/Users/marius/Dev/aws-java-sdk-1.3.8/third-party/commons-codec-1.3/*