微信单号申请电子回单

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/fund-app/mch-transfer/elecsign/transfer-bill-no \
3  -H "Authorization: WECHATPAY2-SHA256-RSA2048 mchid=\"1900000001\",..." \
4  -H "Accept: application/json" \
5  -H "Content-Type: application/json" \
6  -d '{
7    "transfer_bill_no" : "1330000071100999991182020050700019480001"
8  }'
9

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 * 微信单号申请电子回单
24 */
25public class AcceptElecsignByNo {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "POST";
28  private static String PATH = "/v3/fund-app/mch-transfer/elecsign/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    AcceptElecsignByNo client = new AcceptElecsignByNo(
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    AcceptElecsignByNoRequest request = new AcceptElecsignByNoRequest();
41    request.transferBillNo = "1330000071100999991182020050700019480001";
42    try {
43      AcceptElecsignResponse 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 AcceptElecsignResponse run(AcceptElecsignByNoRequest request) {
53    String uri = PATH;
54    String reqBody = WXPayUtility.toJson(request);
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, reqBody));
60    reqBuilder.addHeader("Content-Type", "application/json");
61    RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), reqBody);
62    reqBuilder.method(METHOD, requestBody);
63    Request httpRequest = reqBuilder.build();
64
65    // 发送HTTP请求
66    OkHttpClient client = new OkHttpClient.Builder().build();
67    try (Response httpResponse = client.newCall(httpRequest).execute()) {
68      String respBody = WXPayUtility.extractBody(httpResponse);
69      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
70        // 2XX 成功，验证应答签名
71        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
72            httpResponse.headers(), respBody);
73
74        // 从HTTP应答报文构建返回数据
75        return WXPayUtility.fromJson(respBody, AcceptElecsignResponse.class);
76      } else {
77        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
78      }
79    } catch (IOException e) {
80      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
81    }
82  }
83
84  private final String mchid;
85  private final String certificateSerialNo;
86  private final PrivateKey privateKey;
87  private final String wechatPayPublicKeyId;
88  private final PublicKey wechatPayPublicKey;
89
90  public AcceptElecsignByNo(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
91    this.mchid = mchid;
92    this.certificateSerialNo = certificateSerialNo;
93    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
94    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
95    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
96  }
97
98  public static class AcceptElecsignByNoRequest {
99    @SerializedName("transfer_bill_no")
100    public String transferBillNo;
101  }
102  
103  public static class AcceptElecsignResponse {
104    @SerializedName("state")
105    public ElecsignStatus state;
106  
107    @SerializedName("create_time")
108    public String createTime;
109  }
110  
111  public enum ElecsignStatus {
112    @SerializedName("GENERATING")
113    GENERATING,
114    @SerializedName("FINISHED")
115    FINISHED,
116    @SerializedName("FAILED")
117    FAILED
118  }
119  
120}
121

1package main
2
3import (
4	"bytes"
5	"demo/wxpay_utility" // 引用微信支付工具库，参考 https://pay.weixin.qq.com/doc/v3/merchant/4015119334
6	"encoding/json"
7	"fmt"
8	"net/http"
9	"net/url"
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 := &AcceptElecsignByNoRequest{
27		TransferBillNo: wxpay_utility.String("1330000071100999991182020050700019480001"),
28	}
29
30	response, err := AcceptElecsignByNo(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 AcceptElecsignByNo(config *wxpay_utility.MchConfig, request *AcceptElecsignByNoRequest) (response *AcceptElecsignResponse, err error) {
42	const (
43		host   = "https://api.mch.weixin.qq.com"
44		method = "POST"
45		path   = "/v3/fund-app/mch-transfer/elecsign/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	reqBody, err := json.Marshal(request)
53	if err != nil {
54		return nil, err
55	}
56	httpRequest, err := http.NewRequest(method, reqUrl.String(), bytes.NewReader(reqBody))
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	httpRequest.Header.Set("Content-Type", "application/json")
63	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), reqBody)
64	if err != nil {
65		return nil, err
66	}
67	httpRequest.Header.Set("Authorization", authorization)
68
69	client := &http.Client{}
70	httpResponse, err := client.Do(httpRequest)
71	if err != nil {
72		return nil, err
73	}
74	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
75	if err != nil {
76		return nil, err
77	}
78	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
79		// 2XX 成功，验证应答签名
80		err = wxpay_utility.ValidateResponse(
81			config.WechatPayPublicKeyId(),
82			config.WechatPayPublicKey(),
83			&httpResponse.Header,
84			respBody,
85		)
86		if err != nil {
87			return nil, err
88		}
89		response := &AcceptElecsignResponse{}
90		if err := json.Unmarshal(respBody, response); err != nil {
91			return nil, err
92		}
93
94		return response, nil
95	} else {
96		return nil, wxpay_utility.NewApiException(
97			httpResponse.StatusCode,
98			httpResponse.Header,
99			respBody,
100		)
101	}
102}
103
104type AcceptElecsignByNoRequest struct {
105	TransferBillNo *string `json:"transfer_bill_no,omitempty"`
106}
107
108type AcceptElecsignResponse struct {
109	State      *ElecsignStatus `json:"state,omitempty"`
110	CreateTime *string         `json:"create_time,omitempty"`
111}
112
113type ElecsignStatus string
114
115func (e ElecsignStatus) Ptr() *ElecsignStatus {
116	return &e
117}
118
119const (
120	ELECSIGNSTATUS_GENERATING ElecsignStatus = "GENERATING"
121	ELECSIGNSTATUS_FINISHED   ElecsignStatus = "FINISHED"
122	ELECSIGNSTATUS_FAILED     ElecsignStatus = "FAILED"
123)
124