So rufen Sie Methoden in js in Java auf

// js 代码
STRING_UTIL = {};
STRING_UTIL.isNotEmpty = function (str){
    return "" != str;
}

// java 代码
Reader scriptReaderB = new InputStreamReader(
new FileInputStream(
    new File("F:\tech-study\js-comm\release\bundle.js")),"utf-8");
      
      
      engine.eval(scriptReaderB);
      // engine.eval(scriptReaderA);
      if (engine instanceof Invocable)  
      {  
          // 调用JS方法  
          Invocable invocable = (Invocable)engine;  
          Object result = invocable.invokeFunction("STRING_UTIL.isNotEmpty", new Object[]{"hahaha"});
          
          System.out.println(result.toString());

      }
// 调用异常
java.lang.NoSuchMethodException: no such method: STRING_UTIL.isNotEmpty
    at com.sun.script.javascript.RhinoScriptEngine.invoke(RhinoScriptEngine.java:286)
    at com.sun.script.javascript.RhinoScriptEngine.invokeFunction(RhinoScriptEngine.java:258)
    at AAAAAAA.main(AAAAAAA.java:29)

// 如果在添加一个全局函数
function isNotEmpty (str){
    return STRING_UTIL.isNotEmpty(str);
}

Ändern Sie die Aufrufmethode in

Object result = invocable.invokeFunction("isNotEmpty", new Object[]{"hahaha"});

So funktioniert es