获取购付汇账单文件下载链接

1curl -X GET \
2  https://api.mch.weixin.qq.com/v3/funds-to-oversea/bill-download-url?bill_date=2021-01-01&sub_mchid=19000000001 \
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/partner/4014985777
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 * 获取购付汇账单文件下载链接
24 */
25public class QueryDownloadInfo {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "GET";
28  private static String PATH = "/v3/funds-to-oversea/bill-download-url";
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/partner/4013080340
32    QueryDownloadInfo client = new QueryDownloadInfo(
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/partner/4013080340
34      "1DDE55AD98Exxxxxxxxxx",         // 商户API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/v3/partner/4013058924
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/partner/4013038589
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    QueryDownloadInfoRequest request = new QueryDownloadInfoRequest();
41    request.billDate = "2021-01-01";
42    request.subMchid = "19000000001";
43    try {
44      BillDownloadInfoEntity response = client.run(request);
45        // TODO: 请求成功，继续业务逻辑
46        System.out.println(response);
47    } catch (WXPayUtility.ApiException e) {
48        // TODO: 请求失败，根据状态码执行不同的逻辑
49        e.printStackTrace();
50    }
51  }
52
53  public BillDownloadInfoEntity run(QueryDownloadInfoRequest request) {
54    String uri = PATH;
55    Map<String, Object> args = new HashMap<>();
56    args.put("bill_date", request.billDate);
57    args.put("sub_mchid", request.subMchid);
58    String queryString = WXPayUtility.urlEncode(args);
59    if (!queryString.isEmpty()) {
60        uri = uri + "?" + queryString;
61    }
62
63    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
64    reqBuilder.addHeader("Accept", "application/json");
65    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
66    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo, privateKey, METHOD, uri, null));
67    reqBuilder.method(METHOD, null);
68    Request httpRequest = reqBuilder.build();
69
70    // 发送HTTP请求
71    OkHttpClient client = new OkHttpClient.Builder().build();
72    try (Response httpResponse = client.newCall(httpRequest).execute()) {
73      String respBody = WXPayUtility.extractBody(httpResponse);
74      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
75        // 2XX 成功，验证应答签名
76        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
77            httpResponse.headers(), respBody);
78
79        // 从HTTP应答报文构建返回数据
80        return WXPayUtility.fromJson(respBody, BillDownloadInfoEntity.class);
81      } else {
82        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
83      }
84    } catch (IOException e) {
85      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
86    }
87  }
88
89  private final String mchid;
90  private final String certificateSerialNo;
91  private final PrivateKey privateKey;
92  private final String wechatPayPublicKeyId;
93  private final PublicKey wechatPayPublicKey;
94
95  public QueryDownloadInfo(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
96    this.mchid = mchid;
97    this.certificateSerialNo = certificateSerialNo;
98    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
99    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
100    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
101  }
102
103  public static class QueryDownloadInfoRequest {
104    @SerializedName("bill_date")
105    @Expose(serialize = false)
106    public String billDate;
107  
108    @SerializedName("sub_mchid")
109    @Expose(serialize = false)
110    public String subMchid;
111  }
112  
113  public static class BillDownloadInfoEntity {
114    @SerializedName("hash_type")
115    public HashType hashType;
116  
117    @SerializedName("hash_value")
118    public String hashValue;
119  
120    @SerializedName("download_url")
121    public String downloadUrl;
122  }
123  
124  public enum HashType {
125    @SerializedName("SHA1")
126    SHA1
127  }
128  
129}
130

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/partner/4015119446
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/partner/4013080340
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/partner/4013080340
15		"1DDE55AD98Exxxxxxxxxx",      // 商户API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/v3/partner/4013058924
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/partner/4013038589
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 := &QueryDownloadInfoRequest{
26		BillDate: wxpay_utility.String("2021-01-01"),
27		SubMchid: wxpay_utility.String("19000000001"),
28	}
29
30	response, err := QueryDownloadInfo(config, request)
31	if err != nil {
32		fmt.Printf("请求失败: %+v\n", err)
33		// TODO: 请求失败，根据状态码执行不同的处理
34		return
35	}
36
37	// TODO: 请求成功，继续业务逻辑
38	fmt.Printf("请求成功: %+v\n", response)
39}
40
41func QueryDownloadInfo(config *wxpay_utility.MchConfig, request *QueryDownloadInfoRequest) (response *BillDownloadInfoEntity, err error) {
42	const (
43		host   = "https://api.mch.weixin.qq.com"
44		method = "GET"
45		path   = "/v3/funds-to-oversea/bill-download-url"
46	)
47
48	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
49	if err != nil {
50		return nil, err
51	}
52	query := reqUrl.Query()
53	if request.BillDate != nil {
54		query.Add("bill_date", *request.BillDate)
55	}
56	if request.SubMchid != nil {
57		query.Add("sub_mchid", *request.SubMchid)
58	}
59	reqUrl.RawQuery = query.Encode()
60	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
61	if err != nil {
62		return nil, err
63	}
64	httpRequest.Header.Set("Accept", "application/json")
65	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
66	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
67	if err != nil {
68		return nil, err
69	}
70	httpRequest.Header.Set("Authorization", authorization)
71
72	client := &http.Client{}
73	httpResponse, err := client.Do(httpRequest)
74	if err != nil {
75		return nil, err
76	}
77	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
78	if err != nil {
79		return nil, err
80	}
81	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
82		// 2XX 成功，验证应答签名
83		err = wxpay_utility.ValidateResponse(
84			config.WechatPayPublicKeyId(),
85			config.WechatPayPublicKey(),
86			&httpResponse.Header,
87			respBody,
88		)
89		if err != nil {
90			return nil, err
91		}
92		response := &BillDownloadInfoEntity{}
93		if err := json.Unmarshal(respBody, response); err != nil {
94			return nil, err
95		}
96
97		return response, nil
98	} else {
99		return nil, wxpay_utility.NewApiException(
100			httpResponse.StatusCode,
101			httpResponse.Header,
102			respBody,
103		)
104	}
105}
106
107type QueryDownloadInfoRequest struct {
108	BillDate *string `json:"bill_date,omitempty"`
109	SubMchid *string `json:"sub_mchid,omitempty"`
110}
111
112func (o *QueryDownloadInfoRequest) MarshalJSON() ([]byte, error) {
113	type Alias QueryDownloadInfoRequest
114	a := &struct {
115		BillDate *string `json:"bill_date,omitempty"`
116		SubMchid *string `json:"sub_mchid,omitempty"`
117		*Alias
118	}{
119		// 序列化时移除非 Body 字段
120		BillDate: nil,
121		SubMchid: nil,
122		Alias:    (*Alias)(o),
123	}
124	return json.Marshal(a)
125}
126
127type BillDownloadInfoEntity struct {
128	HashType    *HashType `json:"hash_type,omitempty"`
129	HashValue   *string   `json:"hash_value,omitempty"`
130	DownloadUrl *string   `json:"download_url,omitempty"`
131}
132
133type HashType string
134
135func (e HashType) Ptr() *HashType {
136	return &e
137}
138
139const (
140	HASHTYPE_SHA1 HashType = "SHA1"
141)
142