微信单号查询电子回单

1curl -X GET \
2  https://api.mch.weixin.qq.com/v3/fund-app/mch-transfer/elecsign/transfer-bill-no/1330000071100999991182020050700019480001 \
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 * 微信单号查询电子回单
24 */
25public class QueryElecsignByNo {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "GET";
28  private static String PATH = "/v3/fund-app/mch-transfer/elecsign/transfer-bill-no/{transfer_bill_no}";
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    QueryElecsignByNo client = new QueryElecsignByNo(
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    QueryElecsignByNoRequest request = new QueryElecsignByNoRequest();
41    request.transferBillNo = "1330000071100999991182020050700019480001";
42    try {
43      QueryElecsignResponse 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 QueryElecsignResponse run(QueryElecsignByNoRequest request) {
53    String uri = PATH;
54    uri = uri.replace("{transfer_bill_no}", WXPayUtility.urlEncode(request.transferBillNo));
55
56    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
57    reqBuilder.addHeader("Accept", "application/json");
58    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
59    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo, privateKey, METHOD, uri, null));
60    reqBuilder.method(METHOD, null);
61    Request httpRequest = reqBuilder.build();
62
63    // 发送HTTP请求
64    OkHttpClient client = new OkHttpClient.Builder().build();
65    try (Response httpResponse = client.newCall(httpRequest).execute()) {
66      String respBody = WXPayUtility.extractBody(httpResponse);
67      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
68        // 2XX 成功，验证应答签名
69        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
70            httpResponse.headers(), respBody);
71
72        // 从HTTP应答报文构建返回数据
73        return WXPayUtility.fromJson(respBody, QueryElecsignResponse.class);
74      } else {
75        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
76      }
77    } catch (IOException e) {
78      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
79    }
80  }
81
82  private final String mchid;
83  private final String certificateSerialNo;
84  private final PrivateKey privateKey;
85  private final String wechatPayPublicKeyId;
86  private final PublicKey wechatPayPublicKey;
87
88  public QueryElecsignByNo(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
89    this.mchid = mchid;
90    this.certificateSerialNo = certificateSerialNo;
91    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
92    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
93    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
94  }
95
96  public static class QueryElecsignByNoRequest {
97    @SerializedName("transfer_bill_no")
98    @Expose(serialize = false)
99    public String transferBillNo;
100  }
101  
102  public static class QueryElecsignResponse {
103    @SerializedName("state")
104    public ElecsignStatus state;
105  
106    @SerializedName("create_time")
107    public String createTime;
108  
109    @SerializedName("update_time")
110    public String updateTime;
111  
112    @SerializedName("hash_type")
113    public ElecsignHashType hashType;
114  
115    @SerializedName("hash_value")
116    public String hashValue;
117  
118    @SerializedName("download_url")
119    public String downloadUrl;
120  }
121  
122  public enum ElecsignStatus {
123    @SerializedName("GENERATING")
124    GENERATING,
125    @SerializedName("FINISHED")
126    FINISHED,
127    @SerializedName("FAILED")
128    FAILED
129  }
130  
131  public enum ElecsignHashType {
132    @SerializedName("SHA256")
133    SHA256,
134    @SerializedName("SM3")
135    SM3
136  }
137  
138}
139

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	"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/merchant/4013070756
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/merchant/4013070756
16		"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
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/merchant/4013038816
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 := &QueryElecsignByNoRequest{
27		TransferBillNo: wxpay_utility.String("1330000071100999991182020050700019480001"),
28	}
29
30	response, err := QueryElecsignByNo(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 QueryElecsignByNo(config *wxpay_utility.MchConfig, request *QueryElecsignByNoRequest) (response *QueryElecsignResponse, err error) {
42	const (
43		host   = "https://api.mch.weixin.qq.com"
44		method = "GET"
45		path   = "/v3/fund-app/mch-transfer/elecsign/transfer-bill-no/{transfer_bill_no}"
46	)
47
48	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
49	if err != nil {
50		return nil, err
51	}
52	reqUrl.Path = strings.Replace(reqUrl.Path, "{transfer_bill_no}", url.PathEscape(*request.TransferBillNo), -1)
53	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
54	if err != nil {
55		return nil, err
56	}
57	httpRequest.Header.Set("Accept", "application/json")
58	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
59	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
60	if err != nil {
61		return nil, err
62	}
63	httpRequest.Header.Set("Authorization", authorization)
64
65	client := &http.Client{}
66	httpResponse, err := client.Do(httpRequest)
67	if err != nil {
68		return nil, err
69	}
70	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
71	if err != nil {
72		return nil, err
73	}
74	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
75		// 2XX 成功，验证应答签名
76		err = wxpay_utility.ValidateResponse(
77			config.WechatPayPublicKeyId(),
78			config.WechatPayPublicKey(),
79			&httpResponse.Header,
80			respBody,
81		)
82		if err != nil {
83			return nil, err
84		}
85		response := &QueryElecsignResponse{}
86		if err := json.Unmarshal(respBody, response); err != nil {
87			return nil, err
88		}
89
90		return response, nil
91	} else {
92		return nil, wxpay_utility.NewApiException(
93			httpResponse.StatusCode,
94			httpResponse.Header,
95			respBody,
96		)
97	}
98}
99
100type QueryElecsignByNoRequest struct {
101	TransferBillNo *string `json:"transfer_bill_no,omitempty"`
102}
103
104func (o *QueryElecsignByNoRequest) MarshalJSON() ([]byte, error) {
105	type Alias QueryElecsignByNoRequest
106	a := &struct {
107		TransferBillNo *string `json:"transfer_bill_no,omitempty"`
108		*Alias
109	}{
110		// 序列化时移除非 Body 字段
111		TransferBillNo: nil,
112		Alias:          (*Alias)(o),
113	}
114	return json.Marshal(a)
115}
116
117type QueryElecsignResponse struct {
118	State       *ElecsignStatus   `json:"state,omitempty"`
119	CreateTime  *string           `json:"create_time,omitempty"`
120	UpdateTime  *string           `json:"update_time,omitempty"`
121	HashType    *ElecsignHashType `json:"hash_type,omitempty"`
122	HashValue   *string           `json:"hash_value,omitempty"`
123	DownloadUrl *string           `json:"download_url,omitempty"`
124}
125
126type ElecsignStatus string
127
128func (e ElecsignStatus) Ptr() *ElecsignStatus {
129	return &e
130}
131
132const (
133	ELECSIGNSTATUS_GENERATING ElecsignStatus = "GENERATING"
134	ELECSIGNSTATUS_FINISHED   ElecsignStatus = "FINISHED"
135	ELECSIGNSTATUS_FAILED     ElecsignStatus = "FAILED"
136)
137
138type ElecsignHashType string
139
140func (e ElecsignHashType) Ptr() *ElecsignHashType {
141	return &e
142}
143
144const (
145	ELECSIGNHASHTYPE_SHA256 ElecsignHashType = "SHA256"
146	ELECSIGNHASHTYPE_SM3    ElecsignHashType = "SM3"
147)
148