JAVA main class not found when using Apple auto-ingest tool

Question

I am trying to setup a cronjob to download my daily and weekly reports from iTunes Connect. I have downloaded Apple's Autoingestion.class and I have made the following shell script to download the weekly reports:

java Autoingestion <MyAccountName> <MyPassword> <MyVendorID> Sales Weekly Summary

This shell script is stored inside the same directory as the Autoingestion.class. When I run this shell script inside the directory, it works fine. If I go to another directory and run it, I am getting the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: Autoingestion
Caused by: java.lang.ClassNotFoundException: Autoingestion
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
Could not find the main class: Autoingestion. Program will exit.

Because it does not work when being ran from another directory, my cronjob does not work.

Does anyone have an idea why this happens and if there is anything to do to get rid of it?

Answer 1

Use the following script:

#!/usr/bin/env bash
cd "$( dirname "$0" )"
java Autoingestion <MyAccountName> <MyPassword> <MyVendorID> Sales Weekly Summary

This will change the working directory to the location of the script, then execute the Java program.

The reason is probably the implied class path .. From man java:

   -cp classpath
          Specifies a list of directories, JAR archives, and ZIP  archives
          to  search for class files.  Class path entries are separated by
          colons (:). Specifying -classpath or -cp overrides  any  setting
          of the CLASSPATH environment variable.

          If -classpath and -cp are not used and CLASSPATH is not set, the
          user class path consists of the current directory (.).

Since java doesn't find Autoingestion in your current working directory if you call the script from somewhere else, it fails to launch.

Depending on the exact behavior of the program (e.g. writing files in the current working directory) you can also try specifying a proper -classpath, e.g.:

java -cp "$( dirname "$0" )" Autoingestion <MyAccountName> <MyPassword> <MyVendorID> Sales Weekly Summary