华为支付-免密支付接入签约代扣场景开发步骤

.import com.huawei.petalpay.paymentservice.apiservice.client.model.BaseGwRspWithSign;
.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;
.
.public class MercApiController {
.    private static PetalPayClient payClient = new DefaultPetalPayClient(MercConfigUtil.getMercConfig());
.    /**
.     * 预签约接口调用
.     */
.    public CommonResponse contractPreSignAppV2() {
.        // 组装对象
.        PreSignRequestV2 preSignReq = getPreSignRequestV2();
.        PreSignResponse response = null;
.        try {
.            response = payClient.execute("POST", "/api/v2/contract/presign/app", PreSignResponse.class, preSignReq);
.        } 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.buildContractStr(response.getPreSignNo()));
.    }
.    public static boolean validResponse(BaseGwRspWithSign rsp) {
.        return rsp != null && "000000".equals(rsp.getResultCode());
.    }
.    /**
.     * 预签约接口请求参数组装，商户请根据业务自行实现
.     */
.    private PreSignRequestV2 getPreSignRequestV2() {
.        return PreSignRequestV2.builder().appId(MercConfigUtil.APP_ID) // appId，需要配置为与商户绑定的正确的appId
.            .mercContractCode("pay-example-" + System.currentTimeMillis()) // 签约协议号，每次请求都要变，请将pay-example-修改为商户自己的订单前缀
.            .mercNo(MercConfigUtil.MERC_NO) // 商户号
.            .planId("100") // 协议模板ID，该模板ID是商户在向华为支付提交代扣权限申请时由华为支付生成。请填写正确的协议模板ID。
.            .callbackUrl("https://www.xxxxxx.com/hw/sign/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;
.  requestContractPromise() {
.    // use your own contractStr 
.    const contractStr = '{"appId":"***","preSignNo":"***"}';
.    paymentService.requestContract(this.context, contractStr)
.      .then(() => {
.        // succeeded in signing
.        console.info('succeeded in signing');
.      })
.      .catch((error: BusinessError) => {
.        // failed to sign
.        console.error(`failed to sign, error.code: ${error.code}, error.message: ${error.message}`);
.      });
.  }
.
.  build() {
.    Column() {
.      Button('requestContractPromise')
.        .type(ButtonType.Capsule)
.        .width('50%')
.        .margin(20)
.        .onClick(() => {
.          this.requestContractPromise();
.        })
.      }
.    .width('100%')
.    .height('100%')
.  }
.}

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