Java语言lang.NoClassDefFoundError:osgi包中的jdk/nashorn/api/scripting/ScriptUtils

ScriptEngineManager manager = new ScriptEngineManager(null);
ScriptEngine engine = manager.getEngineByName("nashorn");
BundleContext context = FrameworkUtil.getBundle(FormulaImpl.class).getBundleContext();
URL configURL = context.getBundle().getEntry("eval.txt");
if (configURL != null) {
    InputStream input = null;
    try {
        input = configURL.openStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(input));
        StringBuilder out = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            out.append(line);
        }
        engine.eval(out.toString());
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage());
    } finally {
        try {
            input.close();
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());
        }
    }
}

Object obj = engine.get("formulaColumn");

在这段代码中,obj是作为对象数组获取的。 我无法转换为对象。 我试过了

Object obj = (Object)ScriptUtils.convert(engine.get("formulaColumn"), Object.class);

从我的jsfile返回一个数组。