@Test

    public void aa() throws NoSuchMethodException {

        String regular = "function regular(args1){ return 1+args1 ;}";

        ScriptEngine engine = new ScriptEngineManager().getEngineByName("javascript");

        try {

            engine.eval(regular);

            if (engine instanceof Invocable) {

                Invocable invoke = (Invocable) engine;

                String result = invoke.invokeFunction("regular", 1).toString();

                System.out.println(result);

            } else {

                System.out.println("error");

            }

        } catch (ScriptException e) {

            System.out.println("表达式runtime错误:" + e.getMessage());

        }

    }