package com.lf.server.helper;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import javax.script.Invocable;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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import java.io.File;
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import java.io.FileReader;
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/**
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* JS帮助类
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*
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* @author WWW
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* @date 2024-02-29
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*/
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public class JsHelper {
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private final static Log log = LogFactory.getLog(JsHelper.class);
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/**
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* 调用JS方法
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*/
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public static Object callJsFn(String jsFile, String function, String str) {
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try {
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// 创建 JavaScript 引擎管理器
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ScriptEngineManager manager = new ScriptEngineManager();
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// 获取 JavaScript 引擎
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ScriptEngine engine = manager.getEngineByName("javascript");
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File f = new File(jsFile);
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if (!f.exists() || f.isDirectory()) {
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return null;
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}
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FileReader reader = new FileReader(f);
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// 编译并运行 JavaScript 脚本
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engine.eval(reader);
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// 调用 JavaScript 函数
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Invocable invocable = (Invocable) engine;
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return invocable.invokeFunction(function, str);
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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return null;
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}
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}
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}
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