htmlunit - Trying to use HTML Unit through unix server -

my java code using html unit working fine need open webpage , fill form , click submit. when tried deploy java code jar in unix, it's unable find , click on text input fields/buttons.

so please regarding this. getting null pointer exception whenever trying fetch element id,for example :

1) htmlanchor addr = (htmlanchor) page.getelementbyid("element_id");

2) page = addr.click();

getting error @ line 2

i export class runnable jar file , running on unix java -jar

please help.

usually, print page.asxml() see how page seen.

you have network connectivity difference, between running server , machine. hostname vs 'localhost' can cause differences too.

waiting background threads can differ between machines, please read this.

also, please use latest version of htmlunit, can print used version.

hope helps