com.wechat.pay.java.service.payments.jsapi.JsapiServiceExtension Maven / Gradle / Ivy

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A Java SDK for WeChat Pay APIv3
There is a newer version: 0.2.15
package com.wechat.pay.java.service.payments.jsapi;

import com.wechat.pay.java.core.Config;
import com.wechat.pay.java.core.cipher.Signer;
import com.wechat.pay.java.core.exception.HttpException;
import com.wechat.pay.java.core.exception.MalformedMessageException;
import com.wechat.pay.java.core.exception.ServiceException;
import com.wechat.pay.java.core.exception.ValidationException;
import com.wechat.pay.java.core.http.HostName;
import com.wechat.pay.java.core.http.HttpClient;
import com.wechat.pay.java.core.util.NonceUtil;
import com.wechat.pay.java.service.payments.jsapi.model.CloseOrderRequest;
import com.wechat.pay.java.service.payments.jsapi.model.PrepayRequest;
import com.wechat.pay.java.service.payments.jsapi.model.PrepayWithRequestPaymentResponse;
import com.wechat.pay.java.service.payments.jsapi.model.QueryOrderByIdRequest;
import com.wechat.pay.java.service.payments.jsapi.model.QueryOrderByOutTradeNoRequest;
import com.wechat.pay.java.service.payments.model.Transaction;
import java.time.Instant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * JSAPI 支付的扩展类。
 *
 * 它封装了 JsapiService，并提供了一个增强的 JSAPI 下单方法 prepayWithRequestPayment。
 */
public class JsapiServiceExtension {
  private final Signer signer;
  private final String signType;
  private final JsapiService jsapiService;
  private static final Logger logger = LoggerFactory.getLogger(JsapiServiceExtension.class);

  private JsapiServiceExtension(
      Config config, HttpClient httpClient, HostName hostName, String signType) {
    this.signer = config.createSigner();
    JsapiService.Builder builder = new JsapiService.Builder().config(config);
    this.signType = signType;
    if (httpClient != null) {
      builder.httpClient(httpClient);
    }
    if (hostName != null) {
      builder.hostName(hostName);
    }
    this.jsapiService = builder.build();
  }

  /**
   * JSAPI 支付下单，并返回 JSAPI 调起支付数据。推荐使用！
   *
   * 请求成功后，该方法返回预支付交易会话标识 prepay_id 和客户端 JSAPI 调起支付所需参数。 它相比 JsApiService.prepay
   * 更简单易用，因为无需开发者自行计算调起支付签名。
   *
   * @param request 请求参数
   * @return PrepayWithRequestPaymentResponse
   * @throws HttpException 发送HTTP请求失败。例如构建请求参数失败、发送请求失败、I/O错误等。包含请求信息。
   * @throws ValidationException 发送HTTP请求成功，验证微信支付返回签名失败。
   * @throws ServiceException 发送HTTP请求成功，服务返回异常。例如返回状态码小于200或大于等于300。
   * @throws MalformedMessageException 服务返回成功，content-type不为application/json、解析返回体失败。
   */
  public PrepayWithRequestPaymentResponse prepayWithRequestPayment(PrepayRequest request) {
    String prepayId = jsapiService.prepay(request).getPrepayId();
    long timestamp = Instant.now().getEpochSecond();
    String nonceStr = NonceUtil.createNonce(32);
    String packageVal = "prepay_id=" + prepayId;
    String message =
        request.getAppid() + "\n" + timestamp + "\n" + nonceStr + "\n" + packageVal + "\n";
    logger.debug("Message for RequestPayment signatures is[{}]", message);
    String sign = signer.sign(message).getSign();
    PrepayWithRequestPaymentResponse response = new PrepayWithRequestPaymentResponse();
    response.setAppId(request.getAppid());
    response.setTimeStamp(String.valueOf(timestamp));
    response.setNonceStr(nonceStr);
    response.setPackageVal(packageVal);
    response.setSignType(signType);
    response.setPaySign(sign);
    return response;
  }

  /**
   * 微信支付订单号查询订单
   *
   * @param request 请求参数
   * @return Transaction
   * @throws HttpException 发送HTTP请求失败。例如构建请求参数失败、发送请求失败、I/O错误等。包含请求信息。
   * @throws ValidationException 发送HTTP请求成功，验证微信支付返回签名失败。
   * @throws ServiceException 发送HTTP请求成功，服务返回异常。例如返回状态码小于200或大于等于300。
   * @throws MalformedMessageException 服务返回成功，content-type不为application/json、解析返回体失败。
   */
  public Transaction queryOrderById(QueryOrderByIdRequest request) {
    return jsapiService.queryOrderById(request);
  }

  /**
   * 商户订单号查询订单
   *
   * @param request 请求参数
   * @return Transaction
   * @throws HttpException 发送HTTP请求失败。例如构建请求参数失败、发送请求失败、I/O错误等。包含请求信息。
   * @throws ValidationException 发送HTTP请求成功，验证微信支付返回签名失败。
   * @throws ServiceException 发送HTTP请求成功，服务返回异常。例如返回状态码小于200或大于等于300。
   * @throws MalformedMessageException 服务返回成功，content-type不为application/json、解析返回体失败。
   */
  public Transaction queryOrderByOutTradeNo(QueryOrderByOutTradeNoRequest request) {
    return jsapiService.queryOrderByOutTradeNo(request);
  }

  /**
   * 关闭订单
   *
   * @param request 请求参数
   * @throws HttpException 发送HTTP请求失败。例如构建请求参数失败、发送请求失败、I/O错误等。包含请求信息。
   * @throws ValidationException 发送HTTP请求成功，验证微信支付返回签名失败。
   * @throws ServiceException 发送HTTP请求成功，服务返回异常。例如返回状态码小于200或大于等于300。
   * @throws MalformedMessageException 服务返回成功，content-type不为application/json、解析返回体失败。
   */
  public void closeOrder(CloseOrderRequest request) {
    jsapiService.closeOrder(request);
  }

  public static class Builder {
    private Config config;
    private HttpClient httpClient;
    private HostName hostName;
    private String signType;

    public Builder config(Config config) {
      this.config = config;
      return this;
    }

    public Builder httpClient(HttpClient httpClient) {
      this.httpClient = httpClient;
      return this;
    }

    public Builder hostName(HostName hostName) {
      this.hostName = hostName;
      return this;
    }

    public Builder signType(String signType) {
      this.signType = signType;
      return this;
    }

    public JsapiServiceExtension build() {
      return new JsapiServiceExtension(
          config, httpClient, hostName, signType == null ? "RSA" : signType);
    }
  }
}