获取发票下载信息

1curl -X GET \
2  https://api.mch.weixin.qq.com/v3/new-tax-control-fapiao/fapiao-applications/4200000444201910177461284488/fapiao-files?sub_mchid=1900000109&fapiao_id=20200701123456 \
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 * 获取发票下载信息
24 */
25public class GetFapiaoFileDownloadInfo {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "GET";
28  private static String PATH = "/v3/new-tax-control-fapiao/fapiao-applications/{fapiao_apply_id}/fapiao-files";
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    GetFapiaoFileDownloadInfo client = new GetFapiaoFileDownloadInfo(
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    GetFapiaoFileDownloadInfoRequest request = new GetFapiaoFileDownloadInfoRequest();
41    request.fapiaoApplyId = "4200000444201910177461284488";
42    request.subMchid = "1900000109";
43    request.fapiaoId = "20200701123456";
44    try {
45      GetFapiaoFileDownloadInfoResponse response = client.run(request);
46        // TODO: 请求成功，继续业务逻辑
47        System.out.println(response);
48    } catch (WXPayUtility.ApiException e) {
49        // TODO: 请求失败，根据状态码执行不同的逻辑
50        e.printStackTrace();
51    }
52  }
53
54  public GetFapiaoFileDownloadInfoResponse run(GetFapiaoFileDownloadInfoRequest request) {
55    String uri = PATH;
56    uri = uri.replace("{fapiao_apply_id}", WXPayUtility.urlEncode(request.fapiaoApplyId));
57    Map<String, Object> args = new HashMap<>();
58    args.put("sub_mchid", request.subMchid);
59    args.put("fapiao_id", request.fapiaoId);
60    String queryString = WXPayUtility.urlEncode(args);
61    if (!queryString.isEmpty()) {
62        uri = uri + "?" + queryString;
63    }
64
65    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
66    reqBuilder.addHeader("Accept", "application/json");
67    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
68    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo, privateKey, METHOD, uri, null));
69    reqBuilder.method(METHOD, null);
70    Request httpRequest = reqBuilder.build();
71
72    // 发送HTTP请求
73    OkHttpClient client = new OkHttpClient.Builder().build();
74    try (Response httpResponse = client.newCall(httpRequest).execute()) {
75      String respBody = WXPayUtility.extractBody(httpResponse);
76      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
77        // 2XX 成功，验证应答签名
78        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
79            httpResponse.headers(), respBody);
80
81        // 从HTTP应答报文构建返回数据
82        return WXPayUtility.fromJson(respBody, GetFapiaoFileDownloadInfoResponse.class);
83      } else {
84        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
85      }
86    } catch (IOException e) {
87      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
88    }
89  }
90
91  private final String mchid;
92  private final String certificateSerialNo;
93  private final PrivateKey privateKey;
94  private final String wechatPayPublicKeyId;
95  private final PublicKey wechatPayPublicKey;
96
97  public GetFapiaoFileDownloadInfo(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
98    this.mchid = mchid;
99    this.certificateSerialNo = certificateSerialNo;
100    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
101    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
102    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
103  }
104
105  public static class GetFapiaoFileDownloadInfoRequest {
106    @SerializedName("sub_mchid")
107    @Expose(serialize = false)
108    public String subMchid;
109  
110    @SerializedName("fapiao_apply_id")
111    @Expose(serialize = false)
112    public String fapiaoApplyId;
113  
114    @SerializedName("fapiao_id")
115    @Expose(serialize = false)
116    public String fapiaoId;
117  }
118  
119  public static class GetFapiaoFileDownloadInfoResponse {
120    @SerializedName("fapiao_download_info_list")
121    public List<FapiaoDownloadInfo> fapiaoDownloadInfoList;
122  }
123  
124  public static class FapiaoDownloadInfo {
125    @SerializedName("fapiao_id")
126    public String fapiaoId;
127  
128    @SerializedName("download_url")
129    public String downloadUrl;
130  
131    @SerializedName("status")
132    public Status status;
133  }
134  
135  public enum Status {
136    @SerializedName("ISSUE_ACCEPTED")
137    ISSUE_ACCEPTED,
138    @SerializedName("ISSUED")
139    ISSUED,
140    @SerializedName("REVERSE_ACCEPTED")
141    REVERSE_ACCEPTED,
142    @SerializedName("REVERSED")
143    REVERSED,
144    @SerializedName("ISSUE_FAILED")
145    ISSUE_FAILED,
146    @SerializedName("REVERSE_FAILED")
147    REVERSE_FAILED
148  }
149  
150}
151

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	"strings"
10)
11
12func main() {
13	// TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/v3/partner/4013080340
14	config, err := wxpay_utility.CreateMchConfig(
15		"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
16		"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
17		"/path/to/apiclient_key.pem", // 商户API证书私钥文件路径，本地文件路径
18		"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
19		"/path/to/wxp_pub.pem",       // 微信支付公钥文件路径，本地文件路径
20	)
21	if err != nil {
22		fmt.Println(err)
23		return
24	}
25
26	request := &GetFapiaoFileDownloadInfoRequest{
27		SubMchid:      wxpay_utility.String("1900000109"),
28		FapiaoApplyId: wxpay_utility.String("4200000444201910177461284488"),
29		FapiaoId:      wxpay_utility.String("20200701123456"),
30	}
31
32	response, err := GetFapiaoFileDownloadInfo(config, request)
33	if err != nil {
34		fmt.Printf("请求失败: %+v\n", err)
35		// TODO: 请求失败，根据状态码执行不同的处理
36		return
37	}
38
39	// TODO: 请求成功，继续业务逻辑
40	fmt.Printf("请求成功: %+v\n", response)
41}
42
43func GetFapiaoFileDownloadInfo(config *wxpay_utility.MchConfig, request *GetFapiaoFileDownloadInfoRequest) (response *GetFapiaoFileDownloadInfoResponse, err error) {
44	const (
45		host   = "https://api.mch.weixin.qq.com"
46		method = "GET"
47		path   = "/v3/new-tax-control-fapiao/fapiao-applications/{fapiao_apply_id}/fapiao-files"
48	)
49
50	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
51	if err != nil {
52		return nil, err
53	}
54	reqUrl.Path = strings.Replace(reqUrl.Path, "{fapiao_apply_id}", url.PathEscape(*request.FapiaoApplyId), -1)
55	query := reqUrl.Query()
56	if request.SubMchid != nil {
57		query.Add("sub_mchid", *request.SubMchid)
58	}
59	if request.FapiaoId != nil {
60		query.Add("fapiao_id", *request.FapiaoId)
61	}
62	reqUrl.RawQuery = query.Encode()
63	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
64	if err != nil {
65		return nil, err
66	}
67	httpRequest.Header.Set("Accept", "application/json")
68	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
69	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
70	if err != nil {
71		return nil, err
72	}
73	httpRequest.Header.Set("Authorization", authorization)
74
75	client := &http.Client{}
76	httpResponse, err := client.Do(httpRequest)
77	if err != nil {
78		return nil, err
79	}
80	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
81	if err != nil {
82		return nil, err
83	}
84	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
85		// 2XX 成功，验证应答签名
86		err = wxpay_utility.ValidateResponse(
87			config.WechatPayPublicKeyId(),
88			config.WechatPayPublicKey(),
89			&httpResponse.Header,
90			respBody,
91		)
92		if err != nil {
93			return nil, err
94		}
95		response := &GetFapiaoFileDownloadInfoResponse{}
96		if err := json.Unmarshal(respBody, response); err != nil {
97			return nil, err
98		}
99
100		return response, nil
101	} else {
102		return nil, wxpay_utility.NewApiException(
103			httpResponse.StatusCode,
104			httpResponse.Header,
105			respBody,
106		)
107	}
108}
109
110type GetFapiaoFileDownloadInfoRequest struct {
111	SubMchid      *string `json:"sub_mchid,omitempty"`
112	FapiaoApplyId *string `json:"fapiao_apply_id,omitempty"`
113	FapiaoId      *string `json:"fapiao_id,omitempty"`
114}
115
116func (o *GetFapiaoFileDownloadInfoRequest) MarshalJSON() ([]byte, error) {
117	type Alias GetFapiaoFileDownloadInfoRequest
118	a := &struct {
119		SubMchid      *string `json:"sub_mchid,omitempty"`
120		FapiaoApplyId *string `json:"fapiao_apply_id,omitempty"`
121		FapiaoId      *string `json:"fapiao_id,omitempty"`
122		*Alias
123	}{
124		// 序列化时移除非 Body 字段
125		SubMchid:      nil,
126		FapiaoApplyId: nil,
127		FapiaoId:      nil,
128		Alias:         (*Alias)(o),
129	}
130	return json.Marshal(a)
131}
132
133type GetFapiaoFileDownloadInfoResponse struct {
134	FapiaoDownloadInfoList []FapiaoDownloadInfo `json:"fapiao_download_info_list,omitempty"`
135}
136
137type FapiaoDownloadInfo struct {
138	FapiaoId    *string `json:"fapiao_id,omitempty"`
139	DownloadUrl *string `json:"download_url,omitempty"`
140	Status      *Status `json:"status,omitempty"`
141}
142
143type Status string
144
145func (e Status) Ptr() *Status {
146	return &e
147}
148
149const (
150	STATUS_ISSUE_ACCEPTED   Status = "ISSUE_ACCEPTED"
151	STATUS_ISSUED           Status = "ISSUED"
152	STATUS_REVERSE_ACCEPTED Status = "REVERSE_ACCEPTED"
153	STATUS_REVERSED         Status = "REVERSED"
154	STATUS_ISSUE_FAILED     Status = "ISSUE_FAILED"
155	STATUS_REVERSE_FAILED   Status = "REVERSE_FAILED"
156)
157