js函數保存在String字符串中

package com.netease.qiyu.test.datastageservice.service.impl;import com.netease.qiyu.test.datastageservice.service.KefuSipAccountRegisterService; import org.springframework.stereotype.Service;import javax.script.Invocable; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; import java.io.IOException; import java.io.StringReader;@Service public class KefuSipAccountRegisterServiceImpl implements KefuSipAccountRegisterService {public static void initialToolbarSDK(){// js function：getRouteInfo，入參為province// 參數不要帶var。。不然后面執行方法的時候會報錯。。String routeScript = "function getRouteInfo(province){ \n" + " if (province=='henan') "+ " return 'http://127.0.0.1/resweb';\n" + " else "+ " return '未找到對應的省份信息，province='+province;\n" + "}";// 腳本的執行結果String scriptResult = "";// 1.得到腳本引擎ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");try {// 2.引擎讀取 腳本字符串engine.eval(new StringReader(routeScript));// 如果js存在文件里，舉例// Resource aesJs = new ClassPathResource("js/aes.js");// this.engine.eval(new FileReader(aesJs.getFile()));// 3.將引擎轉換為Invocable，這樣才可以掉用js的方法Invocable invocable = (Invocable)engine;// 4.使用 invocable.invokeFunction掉用js腳本里的方法，第一個參數為方法名，后面的參數為被調用的js方法的入參scriptResult = (String)invocable.invokeFunction("getRouteInfo", "henan");} catch (ScriptException e) {e.printStackTrace();System.out.println("Error executing script: " + e.getMessage() + " script:[" + routeScript + "]");} catch (NoSuchMethodException e) {e.printStackTrace();System.out.println("Error executing script,為找到需要的方法: " + e.getMessage() + " script:[" + routeScript + "]");}System.out.println(scriptResult.toString());}public static void main(String args[]){initialToolbarSDK();} }

js函數保存在.js文件中

public static void initialToolbarSDK(){String scriptResult = "";ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");try {//文件路徑設置成絕對路徑即可String jsFile = "service/impl/test.js";FileInputStream fileInputStream = new FileInputStream(new File(jsFile));Reader scriptReader = new InputStreamReader(fileInputStream, "utf-8");engine.eval(scriptReader);Invocable invocable = (Invocable)engine;scriptResult = (String)invocable.invokeFunction("getRouteInfo", "henan1");} catch (ScriptException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}System.out.println(scriptResult.toString());} 超強干貨來襲 云風專訪：近40年碼齡，通宵達旦的技術人生

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