package demo7;

import java.util.Arrays;

import java.util.List;

import javax.script.Invocable;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineManager;

public class ScriptEngineTest {

    public static void main(String[] args) throws Exception {

        ScriptEngineManager sem = new ScriptEngineManager();

        ScriptEngine engine = sem.getEngineByName("javascript");

        //

        engine.put("msg", "just a test");

        String str = "msg += '!!!';var user = {name:'tom',age:23,hobbies:['football','basketball']}; var name = user.name; var hb = user.hobbies[1];";

        engine.eval(str);

        String msg = (String) engine.get("msg");

        String name = (String) engine.get("name");

        String hb = (String) engine.get("hb");

        System.out.println(msg);

        System.out.println(name + ":" + hb);

        //

        engine.eval("function add (a, b) {c = a + b; return c; }");

        Invocable jsInvoke = (Invocable) engine;

        Object result1 = jsInvoke.invokeFunction("add", new Object[] { 10, 5 });

        System.out.println(result1);

        //

        Adder adder = jsInvoke.getInterface(Adder.class);

        int result2 = adder.add(10, 35);

        System.out.println(result2);

        //

        engine.eval("function run() {print('www.java2s.com');}");

        Invocable invokeEngine = (Invocable) engine;

        Runnable runner = invokeEngine.getInterface(Runnable.class);

        Thread t = new Thread(runner);

        t.start();

        t.join();

        //

        String jsCode = "importPackage(java.util);var list2 = Arrays.asList(['A', 'B', 'C']); ";

        engine.eval(jsCode);

        List<String> list2 = (List<String>) engine.get("list2");

        for (String val : list2) {

            System.out.println(val);

        }

    }

}

interface Adder {

    int add(int a, int b);

}