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POExecute batch files from JAVA and capture batch environment
 

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  1. POExecute batch files from JAVA and capture batch environment
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    <p>I need a solution that allows to capture the batch file exit code and the resultant environment - by this I mean that I need to retrieve the system environment + variables set within the batch.</p> <p>For better understanding here is what I came up with. Unfortunately the printEnvironment() method does not print out the variable MyVar set previously in batch but only the system variables. Is there a way to capture "MyVar" without changeing the batch file itself?</p> <pre><code>import java.io.IOException; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Map; class Main{ public static void main(String[] args){ String command = "C:/temp/varTest.bat"; MyTask mt = new MyTask(command); mt.run(); } } class MyTask implements Runnable{ private ProcessBuilder pb; private Process process; private int exitCode; private Map&lt;String, String&gt; env; private String command; public MyTask(String command){ this.command = command; } public void run(){ try { pb = new ProcessBuilder(command); process = pb.start(); process.waitFor(); exitCode = process.exitValue(); } catch (IOException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); }finally{ System.out.println("Execution finished! Exit code: " + exitCode); printEnvironment(); process.destroy(); } } private void printEnvironment(){ env = pb.environment(); List&lt;String&gt; envKeys = new ArrayList&lt;String&gt;(env.keySet()); Collections.sort(envKeys); for(String key : envKeys){ System.out.println(key+" ==&gt; "+env.get(key)); } } } </code></pre> <p>The batch file code:</p> <pre><code>set MyVar=VAL </code></pre>
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    1. COanother xy problem? http://meta.stackexchange.com/questions/66377/what-is-the-xy-problem
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    2. COright, one problem at a time. Once it's answered I will complain that this is not what I meat. Anyways here you go...
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