jacob c++里方法的类型是bstr ,为啥JAVA调用时老是出错

[id(4)] HRESULT sayHello2([in] BSTR say, [out, retval] BSTR* result);

ComThread.InitMTA(true);
ActiveXComponent com = new ActiveXComponent("CLSID:FF90EFCA-0856-4159-A9CC-0E7BBC317554") ;

  Dispatch disp = (Dispatch) com.getObject();
  Variant  a = new Variant(11);
  Variant  b = new Variant(2);
  Variant c  =  new Variant();

  c = Dispatch.call(disp, "Add",2,3);
  System.out.println(c.toString());
  Variant v = Dispatch.call(disp, "sayHello2","fuck");

  System.out.println(v.toString());
     Can't map name to dispid: sayHello2

BSTR 在VC里面是utf16编码， 你传字符串过去要转成那样才行。

就是宽字符指针，送对应的宽字符串进去。

ComThread.InitMTA(true);
ActiveXComponent com = new ActiveXComponent("CLSID:FF90EFCA-0856-4159-A9CC-0E7BBC317554") ;

  Dispatch disp = (Dispatch) com.getObject();
  Variant  a = new Variant(11);
  Variant  b = new Variant(2);
  Variant c  =  new Variant();

  c = Dispatch.call(disp, "Add",2,3);
  System.out.println(c.toString());



   //用新的字符编码生成字符串
  try {
    byte[] bs = "fuck".getBytes();
    String xx = new String(bs, "UTF-8");
    Variant v = Dispatch.call(disp, "sayHello2",xx);
    System.out.println(v.toString());
} catch (UnsupportedEncodingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
 结果正确，