CodePayService service = new CodePayService.Builder().config(config).build();

PrepayRequest prepayRequest = new PrepayRequest();

prepayRequest.setAppid("应用AppID");

prepayRequest.setMchid("直连商户号。");

prepayRequest.setDescription("商品描述");

prepayRequest.setOutTradeNo("商户系统内部订单号");

Amount amount = new Amount();

amount.setTotal("订单总金额，单位为分");

amount.setCurrency("CNY");

prepayRequest.setAmount(amount);

Payer payer = new Payer();

payer.setAuthCode("付款码支付授权码，即用户打开微信钱包显示的码");

prepayRequest.setPayer(payer);

SceneInfo sceneInfo = new SceneInfo();

StoreInfo storeInfo = new StoreInfo();

storeInfo.setId("0001");

sceneInfo.setStoreInfo(storeInfo);

prepayRequest.setSceneInfo(sceneInfo);

PrepayResponse prepayResponse = service.prepay(prepayRequest);

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