前提

1、JDK1.8

2、引入jar包

<!--graalvm.js --><dependency> ???<groupId>org.graalvm.js</groupId> ???<artifactId>js</artifactId> ???<version>1.0.0-rc12</version></dependency>

运行

package com.terwergreen;import org.graalvm.polyglot.Context;import org.graalvm.polyglot.Value;import java.util.function.Consumer;public class Main { ???private Object renderedObject = null; ???private Consumer<Object> fnResolve = object -> { ???????renderedObject = object; ???????System.out.println("fnResolve=>promiseResolved"); ???}; ???private Consumer<Object> fnRejected = object -> { ???????renderedObject = object; ???????System.out.println("fnRejected=>promiseRejected"); ???}; ???private void execute() { ???????try (Context context = Context.newBuilder("js").allowAllAccess(true).build()) { ???????????Value eval = context.eval("js", ???????????????????"(async function() { return 'Hello World' });" ???????????); ???????????eval.execute().invokeMember("then", fnResolve, fnRejected); ???????????System.out.println("renderedObject = " + renderedObject); ???????} catch (Exception e) { ???????????e.printStackTrace(); ???????} ???} ???public static void main(String[] args) { ???????Main main = new Main(); ???????main.execute(); ???}}

使用graalvm.js调用promise

原文地址：https://www.cnblogs.com/tangyouwei/p/10357340.html