有没有办法将java对象（包含附件数据）直接设置为MimeMessaage作为附件

Question

我知道我们可以如下设置文件系统中的文件或链接到MimeMessage作为附件。

private void RequestMultiplePermission() {

        // Creating String Array with Permissions.
        ActivityCompat.requestPermissions(LoginActivity.this, new String[]
                {
                        CALL_PHONE,
                        READ_PHONE_STATE
                }, RequestPermissionCode);

    }
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {

            case RequestPermissionCode:

                if (grantResults.length > 0) {

                    boolean GetCallPermission = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                    boolean GetReadphoneper = grantResults[1] == PackageManager.PERMISSION_GRANTED;

                    if (GetCallPermission && GetReadphoneper) {

                        Toast.makeText(LoginActivity.this, "Permission Granted", Toast.LENGTH_LONG).show();
                    }
                    else {
                        ///Toast.makeText(Login.this,"Permission Granted",Toast.LENGTH_LONG).show();
                    }
                }
                break;
        }
    }

但是我想知道是否可以直接将java对象的内容设置为MimeMessage的附件。我有代表电子邮件附件的附件java类。我需要将附件对象主体设置为MimeMessage。请帮忙。