js方法如下：

function add(a,b){return a + b + number;}

调用方法如下：（免费学习视频教程分享：java视频教程）

package com.cgnb.dataqualitymng; import java.io.FileReader;import java.util.Scanner; import javax.script.Bindings;import javax.script.Invocable;import javax.script.ScriptContext;import javax.script.ScriptEngine;import javax.script.ScriptEngineManager; public class ExecuJs {public static void main(String[] args) throws Exception { // 获取JS执行引擎ScriptEngine se = new ScriptEngineManager().getEngineByName("javascript");// 获取变量Bindings bindings = se.createBindings();bindings.put("number", 3);se.setBindings(bindings, ScriptContext.ENGINE_SCOPE);Scanner sc = new Scanner(System.in);while (sc.hasNextInt()) {int a = sc.nextInt();int b = sc.nextInt();System.out.println("输入的参数【" + a + "】 + 【" + b + "】");se.eval(new FileReader("D:\\desk\\test.js"));// 是否可调用if (se instanceof Invocable) {Invocable in = (Invocable) se;Integer result = (Integer) in.invokeFunction("add", a, b);System.out.println("获得的结果：" + result);} } }}

调用结果如图：

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