public class ExecJs {

    /**
     * 记录日志类
     */
    private Logger log = Logger.getLogger(ExecJs.class);
    /**
     * 后置处理，执行js脚本
     * @param js
     * @throws Exception
     */
    public void execJs(String js, Map<String,Object> map) throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("execJs js : " + js);
            Iterator<Entry<String, Object>> it = map.entrySet().iterator();
            while (it.hasNext()) {
                Entry<String, Object> entry = (Entry<String, Object>) it.next();
                log.info("EXECJS MAP : " + entry.getKey() + "---" + entry.getValue());
            }// end while
        }// end if
        if ("".equals(js) || js == null) {
            log.info("EXECJS ERROR : JAVASCRIPT CONTENT IS NULL");
        } else if(map == null || map.size()<=0){
            log.info("EXECJS ERROR : MAP CONTENT IS NULL");
        } else {
            // 获取脚本引擎
            ScriptEngineManager mgr = new ScriptEngineManager();
            ScriptEngine engine = mgr.getEngineByName("javascript");
            // 绑定数据
            ScriptContext newContext = new SimpleScriptContext();
            Bindings bind = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
            bind.putAll(map);
            try {
                engine.setBindings(bind, ScriptContext.ENGINE_SCOPE);
                engine.eval(js);
            } catch (Exception e) {
                log.info("EXECJS EXCEPTION : EXECUTE JAVASCRIPT EXCEPTION", e);
                throw (e);
            }// end try
        }// end if
    }
}
调用例子
boolean flag = false;
String js = “var a = 1; var b = a + aKey;println(b);”;
Map<String,Object> map = new HashMap<String,Object>();
map.put(“aKey”, “aValue”);
try {
flag = execJs.execJs(js, map);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}