Scripting javax.script.ScriptEngine 관련 참고사항 (sample java 포함)

import java.util.List;

import java.util.stream.Collectors;

 

import javax.script.Invocable;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineFactory;

import javax.script.ScriptEngineManager;

import javax.script.ScriptException;

 

public class TestScriptEngine {

 

    public static void main(String args[]) {

        

        

        ScriptEngineManager manager = new ScriptEngineManager();

        List<ScriptEngineFactory> engineFactories = manager.getEngineFactories();

 

        for (ScriptEngineFactory factory : engineFactories) {

            System.out.println("engine name: " + factory.getEngineName());

            System.out.println("engine version: " + factory.getEngineVersion());

 

            String extensions = factory.getExtensions().stream().collect(Collectors.joining(", "));

            System.out.println("extensions: " + extensions);

 

            System.out.println("language name: " + factory.getLanguageName());

            System.out.println("language version: " + factory.getLanguageVersion());

 

            String mimeTypes = factory.getMimeTypes().stream().collect(Collectors.joining(", "));

            System.out.println("mimeTypes: " + mimeTypes);

 

            String shortNames = factory.getNames().stream().collect(Collectors.joining(", "));

            System.out.println("shortNames :" + shortNames);

 

            String[] params = { ScriptEngine.NAME, ScriptEngine.ENGINE, ScriptEngine.ENGINE_VERSION,

                    ScriptEngine.LANGUAGE, ScriptEngine.LANGUAGE_VERSION };

 

            for (String param : params) {

                System.out.printf("parameter '%s': %s\n", param, factory.getParameter(param));

            }

            System.out.println("---------------");

        }

        

        

        

        

        ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");

        try {

            if(!(engine instanceof Invocable))  {

                System.out.println("Invocable 인터페이스 사용 불가");

            } else {

                System.out.println("Invocable 인터페이스 사용 가능");

            }

            System.out.println("---------------");

            

            engine.eval("print('Hello World');");

        } catch (ScriptException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}