//ScriptEngineManager sem = new ScriptEngineManager();  //ScriptEngine engine  = sem.getEngineByName("JavaScript");  //String script = "function helloFunction(name) { return 'Hello everybody,' + name;}";        //engine.eval(script);        //Invocable inv = (Invocable) engine;         //String res = (String) inv.invokeFunction("helloFunction", "Scripting");        //out.println("res:" + res);

好难啊