华为支付-商户基础支付场景开发步骤

import com.huawei.petalpay.paymentservice.apiservice.client.model.PreOrderCreateRequestV2;
import com.huawei.petalpay.paymentservice.apiservice.client.model.PreOrderCreateResponse;
import com.huawei.petalpay.paymentservice.apiservice.client.model.PreSignRequestV2;
import com.huawei.petalpay.paymentservice.apiservice.client.model.PreSignResponse;
import com.huawei.petalpay.paymentservice.core.client.DefaultPetalPayClient;
import com.huawei.petalpay.paymentservice.core.client.PetalPayClient;
import com.huawei.petalpay.paymentservice.example.common.CommonResponse;
import com.huawei.petalpay.paymentservice.example.common.MercConfigUtil;
import lombok.extern.slf4j.Slf4j;

public class MercApiController {
    private static PetalPayClient payClient = new DefaultPetalPayClient(MercConfigUtil.getMercConfig());
    /**
     * 预下单接口调用
     */
    public CommonResponse aggrPreOrderForAppV2() {
        // 组装对象
        PreOrderCreateRequestV2 preOrderReq = getPreOrderCreateRequestV2();
        PreOrderCreateResponse response = null;
        try {
            response = payClient.execute("POST", "/api/v2/aggr/preorder/create/app", PreOrderCreateResponse.class,
                preOrderReq);
        } catch (Exception e) {
            // todo 异常处理
            log.error("request error ", e);
            return CommonResponse.buildErrorRsp(e.getMessage());
        }
        if (!validResponse(response)) {
            // todo 异常处理
            log.error("response is invalid ", response);
            return CommonResponse.buildFailRsp(response);
        }
        return CommonResponse.buildSuccessRsp(payClient.buildOrderStr(response.getPrepayId()));
    }
    public static boolean validResponse(BaseGwRspWithSign rsp) {
        return rsp != null && "000000".equals(rsp.getResultCode());
    }
    /**
     * 预下单接口请求参数组装，商户请根据业务自行实现
     */
    public static PreOrderCreateRequestV2 getPreOrderCreateRequestV2() {
        return PreOrderCreateRequestV2.builder()
            .mercOrderNo("pay-example-" + System.currentTimeMillis()) // 每次订单号都要变，请将pay-example-修改为商户自己的订单前缀
            .appId(MercConfigUtil.APP_ID)  // appId，需要配置为与商户绑定的正确的appId
            .mercNo(MercConfigUtil.MERC_NO) // 商户的商户号
            .tradeSummary("请修改为对应的商品简称") // 请修改为商品简称
            .bizType("100002") // (100001：虚拟商品购买,100002：实物商品购买,100004：航旅交通服务,100005：活动票务订购,100006：商业服务消费,100007：生活服务消费,100008：租金缴纳,100009：会员费缴纳,100011：其他商家消费,100037：公共便民服务)
            .totalAmount(2L)
            .callbackUrl("https://www.xxxxxx.com/hw/pay/callback") // 回调通知地址，通知URL必须为直接可访问的URL，要求为https地址。最大长度为512。请替换为格式正确的结果通知回调地址。
            .build();
    }

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import { BusinessError } from '@kit.BasicServicesKit';
import { paymentService } from '@kit.PaymentKit';
import { common } from '@kit.AbilityKit';

@Entry
@Component
struct Index {
  context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
  requestPaymentPromise() {
    // use your own orderStr
    const orderStr = '{"app_id":"***","merc_no":"***","prepay_id":"xxx","timestamp":"1680259863114","noncestr":"1487b8a60ed9f9ecc0ba759fbec23f4f","sign":"****","auth_id":"***"}';
    paymentService.requestPayment(this.context, orderStr)
      .then(() => {
        // pay success
        console.info('succeeded in paying');
      })
      .catch((error: BusinessError) => {
        // failed to pay
        console.error(`failed to pay, error.code: ${error.code}, error.message: ${error.message}`);
      });
  }

  build() {
    Column() {
      Button('requestPaymentPromise')
        .type(ButtonType.Capsule)
        .width('50%')
        .margin(20)
        .onClick(() => {
          this.requestPaymentPromise();
        })
      }
    .width('100%')
    .height('100%')
  }
}

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