日期:2014-05-16  浏览次数:20433 次

java代码执行js

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

public class TestJs {

?public static String test() throws Exception {
??// 读取JS文件
??BufferedReader buf = new BufferedReader(new InputStreamReader(
????new FileInputStream(new File("js/test.js"))));

??// 调用js。。这里是关键 啊
??ScriptEngineManager scriptManager = new ScriptEngineManager();
??ScriptEngine js = scriptManager.getEngineByExtension("js");
??// 执行JS
??js.eval(buf);
??Invocable inv = (Invocable) js;

??// p1的获取 执行js中的方法
??String p1 = (String) inv.invokeFunction("test");

??return p1;
?}

?public static void main(String[] args) throws Exception {
??System.out.println(test());
?}
}

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