获取商家券事件通知地址

1curl -X GET \
2  https://api.mch.weixin.qq.com/v3/marketing/busifavor/callbacks?mchid=98568888 \
3  -H "Authorization: WECHATPAY2-SHA256-RSA2048 mchid=\"1900000001\",..." \
4  -H "Accept: application/json" 
5

1package com.java.demo;
2
3import com.java.utils.WXPayUtility; // 引用微信支付工具库，参考：https://pay.weixin.qq.com/doc/v3/merchant/4014931831
4
5import com.google.gson.annotations.SerializedName;
6import com.google.gson.annotations.Expose;
7import okhttp3.MediaType;
8import okhttp3.OkHttpClient;
9import okhttp3.Request;
10import okhttp3.RequestBody;
11import okhttp3.Response;
12
13import java.io.IOException;
14import java.io.UncheckedIOException;
15import java.security.PrivateKey;
16import java.security.PublicKey;
17import java.util.ArrayList;
18import java.util.HashMap;
19import java.util.List;
20import java.util.Map;
21
22/**
23 * 获取商家券事件通知地址
24 */
25public class GetCouponNotify {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "GET";
28  private static String PATH = "/v3/marketing/busifavor/callbacks";
29
30  public static void main(String[] args) {
31    // TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/v3/merchant/4013070756
32    GetCouponNotify client = new GetCouponNotify(
33      "19xxxxxxxx",                    // 商户号，是由微信支付系统生成并分配给每个商户的唯一标识符，商户号获取方式参考 https://pay.weixin.qq.com/doc/v3/merchant/4013070756
34      "1DDE55AD98Exxxxxxxxxx",         // 商户API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013053053
35      "/path/to/apiclient_key.pem",     // 商户API证书私钥文件路径，本地文件路径
36      "PUB_KEY_ID_xxxxxxxxxxxxx",      // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013038816
37      "/path/to/wxp_pub.pem"           // 微信支付公钥文件路径，本地文件路径
38    );
39
40    GetCouponNotifyRequest request = new GetCouponNotifyRequest();
41    request.mchid = "98568888";
42    try {
43      GetCouponNotifyResponse response = client.run(request);
44        // TODO: 请求成功，继续业务逻辑
45        System.out.println(response);
46    } catch (WXPayUtility.ApiException e) {
47        // TODO: 请求失败，根据状态码执行不同的逻辑
48        e.printStackTrace();
49    }
50  }
51
52  public GetCouponNotifyResponse run(GetCouponNotifyRequest request) {
53    String uri = PATH;
54    Map<String, Object> args = new HashMap<>();
55    args.put("mchid", request.mchid);
56    String queryString = WXPayUtility.urlEncode(args);
57    if (!queryString.isEmpty()) {
58        uri = uri + "?" + queryString;
59    }
60
61    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
62    reqBuilder.addHeader("Accept", "application/json");
63    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
64    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo, privateKey, METHOD, uri, null));
65    reqBuilder.method(METHOD, null);
66    Request httpRequest = reqBuilder.build();
67
68    // 发送HTTP请求
69    OkHttpClient client = new OkHttpClient.Builder().build();
70    try (Response httpResponse = client.newCall(httpRequest).execute()) {
71      String respBody = WXPayUtility.extractBody(httpResponse);
72      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
73        // 2XX 成功，验证应答签名
74        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
75            httpResponse.headers(), respBody);
76
77        // 从HTTP应答报文构建返回数据
78        return WXPayUtility.fromJson(respBody, GetCouponNotifyResponse.class);
79      } else {
80        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
81      }
82    } catch (IOException e) {
83      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
84    }
85  }
86
87  private final String mchid;
88  private final String certificateSerialNo;
89  private final PrivateKey privateKey;
90  private final String wechatPayPublicKeyId;
91  private final PublicKey wechatPayPublicKey;
92
93  public GetCouponNotify(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
94    this.mchid = mchid;
95    this.certificateSerialNo = certificateSerialNo;
96    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
97    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
98    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
99  }
100
101  public static class GetCouponNotifyRequest {
102    @SerializedName("mchid")
103    @Expose(serialize = false)
104    public String mchid;
105  }
106  
107  public static class GetCouponNotifyResponse {
108    @SerializedName("mchid")
109    public String mchid;
110  
111    @SerializedName("notify_url")
112    public String notifyUrl;
113  }
114  
115}
116

1package main
2
3import (
4	"demo/wxpay_utility" // 引用微信支付工具库，参考 https://pay.weixin.qq.com/doc/v3/merchant/4015119334
5	"encoding/json"
6	"fmt"
7	"net/http"
8	"net/url"
9)
10
11func main() {
12	// TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/v3/merchant/4013070756
13	config, err := wxpay_utility.CreateMchConfig(
14		"19xxxxxxxx",                 // 商户号，是由微信支付系统生成并分配给每个商户的唯一标识符，商户号获取方式参考 https://pay.weixin.qq.com/doc/v3/merchant/4013070756
15		"1DDE55AD98Exxxxxxxxxx",      // 商户API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013053053
16		"/path/to/apiclient_key.pem", // 商户API证书私钥文件路径，本地文件路径
17		"PUB_KEY_ID_xxxxxxxxxxxxx",   // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013038816
18		"/path/to/wxp_pub.pem",       // 微信支付公钥文件路径，本地文件路径
19	)
20	if err != nil {
21		fmt.Println(err)
22		return
23	}
24
25	request := &GetCouponNotifyRequest{
26		Mchid: wxpay_utility.String("98568888"),
27	}
28
29	response, err := GetCouponNotify(config, request)
30	if err != nil {
31		fmt.Printf("请求失败: %+v\n", err)
32		// TODO: 请求失败，根据状态码执行不同的处理
33		return
34	}
35
36	// TODO: 请求成功，继续业务逻辑
37	fmt.Printf("请求成功: %+v\n", response)
38}
39
40func GetCouponNotify(config *wxpay_utility.MchConfig, request *GetCouponNotifyRequest) (response *GetCouponNotifyResponse, err error) {
41	const (
42		host   = "https://api.mch.weixin.qq.com"
43		method = "GET"
44		path   = "/v3/marketing/busifavor/callbacks"
45	)
46
47	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
48	if err != nil {
49		return nil, err
50	}
51	query := reqUrl.Query()
52	if request.Mchid != nil {
53		query.Add("mchid", *request.Mchid)
54	}
55	reqUrl.RawQuery = query.Encode()
56	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
57	if err != nil {
58		return nil, err
59	}
60	httpRequest.Header.Set("Accept", "application/json")
61	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
62	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
63	if err != nil {
64		return nil, err
65	}
66	httpRequest.Header.Set("Authorization", authorization)
67
68	client := &http.Client{}
69	httpResponse, err := client.Do(httpRequest)
70	if err != nil {
71		return nil, err
72	}
73	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
74	if err != nil {
75		return nil, err
76	}
77	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
78		// 2XX 成功，验证应答签名
79		err = wxpay_utility.ValidateResponse(
80			config.WechatPayPublicKeyId(),
81			config.WechatPayPublicKey(),
82			&httpResponse.Header,
83			respBody,
84		)
85		if err != nil {
86			return nil, err
87		}
88		response := &GetCouponNotifyResponse{}
89		if err := json.Unmarshal(respBody, response); err != nil {
90			return nil, err
91		}
92
93		return response, nil
94	} else {
95		return nil, wxpay_utility.NewApiException(
96			httpResponse.StatusCode,
97			httpResponse.Header,
98			respBody,
99		)
100	}
101}
102
103type GetCouponNotifyRequest struct {
104	Mchid *string `json:"mchid,omitempty"`
105}
106
107func (o *GetCouponNotifyRequest) MarshalJSON() ([]byte, error) {
108	type Alias GetCouponNotifyRequest
109	a := &struct {
110		Mchid *string `json:"mchid,omitempty"`
111		*Alias
112	}{
113		// 序列化时移除非 Body 字段
114		Mchid: nil,
115		Alias: (*Alias)(o),
116	}
117	return json.Marshal(a)
118}
119
120type GetCouponNotifyResponse struct {
121	Mchid     *string `json:"mchid,omitempty"`
122	NotifyUrl *string `json:"notify_url,omitempty"`
123}
124