How to execute javascript on a webpage using java

问题

I am establishing a HttpUrlConnection with a webpage . Now I have javascript snippet that I want to execute on this webpage . How can I do this ?

回答1:

You could try :

    private static ScriptEngineManager mgr = null;
    private static ScriptEngine engine = null;

    mgr = new ScriptEngineManager();
    engine = mgr.getEngineByName("JavaScript");

    Object eval = engine.eval(s); // s is javascript code

回答2:

Since Javascript needs some kind of Virtual Machine to run in - usually provided by browsers or programms which act like browsers (so called headless browsers), you have to use some kind of "browsing engine" (so to say) to run the page in. Perhaps WebEngine may be worth a look.

来源：https://stackoverflow.com/questions/22716447/how-to-execute-javascript-on-a-webpage-using-java