Java6 腳本引擎(用Java調用JS腳本)調用js

 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import javax.script.Invocable;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineManager;
 import javax.script.ScriptException;
 
 public class JavaScriptEngineTest {
     public static void main(String[] args) {
         try {
             JavaScriptEngineTest test = new JavaScriptEngineTest();
             test.testAdd(5, 6);
         } catch (Exception se) {
             se.printStackTrace();
         }
     }
 
     public String getPath() {
         return this.getClass().getResource("/").getPath();
     }
 
 
     public void testAdd(int a, int b) {
         ScriptEngineManager sem = new ScriptEngineManager();
         ScriptEngine jsEngine = sem.getEngineByName("js");
         try {
             jsEngine.eval(new FileReader(getPath() + "JavaScriptEngineTest.js"));
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (ScriptException e) {
             e.printStackTrace();
         }
         Invocable invocableEngine = (Invocable) jsEngine;
         try {
             Object ret = invocableEngine.invokeFunction("add", a, b);
             System.out.println(ret);
         } catch (ScriptException e) {
             e.printStackTrace();
         } catch (NoSuchMethodException e) {
             e.printStackTrace();
         }
     }
 
    
 }

JavaScriptEngineTest.js，放在同一目錄：

 function add(a,b) {
   return a+b;
 }
輸出：
11.0