jvm中可用的动态脚本引擎和动态代码执行

package com.penngo.script; import javax.script.Invocable; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; public class NashornTest { public static void main(String[] args) throws Exception{ String js = """ // js调用java var Integer = Java.type("java.lang.Integer"); var System = Java.type("java.lang.System"); function add (a, b) { var sum = a + b; System.out.println("Script sum=" + sum); return Integer.valueOf(sum); } """; ScriptEngineManager sem = new ScriptEngineManager(); ScriptEngine engine = sem.getEngineByName("nashorn"); engine.eval(js); Invocable jsInvoke = (Invocable) engine; //java中调用js Object result = jsInvoke.invokeFunction("add", new Object[] { 13.1, 20.1 }); System.out.println("Nashorn result=" + result); } }