ISO 8583 包装 120 字段

Question

我想设置120的子字段，谁能指导一下？

目前我正在使用 JPOS 库来打包数据，下面是示例打包消息。

        request.setPackager(packager);
        request.setMTI(Constants.MTI.FINANCIAL_RESPONSE.getValue());
        request.set(new ISOField(2, unpackedMsg.getString(2)));
        request.set(new ISOField(3, "000062"));
        request.set(new ISOField(4, unpackedMsg.getString(4)));
        request.set(new ISOField(7, unpackedMsg.getString(7)));
        request.set(new ISOField(11, unpackedMsg.getString(11)));
        request.set(new ISOField(12, unpackedMsg.getString(12)));
        request.set(new ISOField(13, unpackedMsg.getString(13)));
        request.set(new ISOField(15, unpackedMsg.getString(15)));
        request.set(new ISOField(18, unpackedMsg.getString(18)));
        request.set(new ISOField(22, unpackedMsg.getString(22)));
        request.set(new ISOField(24, unpackedMsg.getString(24)));
        request.set(new ISOField(32, unpackedMsg.getString(32)));
        request.set(new ISOField(33, unpackedMsg.getString(33)));
        request.set(new ISOField(37, unpackedMsg.getString(37)));
        request.set(new ISOField(38, Constants.getRandomNumberString()));
        request.set(new ISOField(39, Constants.SUCCESS_RESPONSE));
        request.set(new ISOField(41, unpackedMsg.getString(41)));
        request.set(new ISOField(43, unpackedMsg.getString(43)));
        request.set(new ISOField(49, unpackedMsg.getString(49)));
        request.set(new ISOField(103, unpackedMsg.getString(103)));
        request.set(new ISOField(120, sb.toString()));

想在120的子字段下添加数据

120 feild values should be as mentioned in the screenshot

Answer 1

问题出在 MLI 上，当我发送给第 3 方时长度不合适。

ISO 8583 包装 120 字段

ISO 8583 packing 120 feild

java

iso

pack

iso8583

jpos