商户单号申请电子回单

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 * 商户单号申请电子回单
24 */
25public class AcceptElecsignByOutNo {
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/out-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    AcceptElecsignByOutNo client = new AcceptElecsignByOutNo(
33      "填入 商户号",  // 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      "填入 商户API证书序列号", // 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      "填入 商户API证书私钥文件路径", // 商户API证书私钥文件路径，本地文件路径
36      "填入 微信支付公钥ID", // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/v3/merchant/4013038816
37      "填入 微信支付公钥文件路径" // 微信支付公钥文件路径，本地文件路径
38    );
39
40    AcceptElecsignByOutNoRequest request = new AcceptElecsignByOutNoRequest();
41    request.outBillNo = "plfk2020042013";
42    try {
43      AcceptElecsignResponse response = client.run(request);
44
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 AcceptElecsignResponse run(AcceptElecsignByOutNoRequest request) {
54    String uri = PATH;
55    String reqBody = WXPayUtility.toJson(request);
56
57    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
58    reqBuilder.addHeader("Accept", "application/json");
59    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
60    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo,privateKey, METHOD, uri, reqBody));
61    reqBuilder.addHeader("Content-Type", "application/json");
62    RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), reqBody);
63    reqBuilder.method(METHOD, requestBody);
64    Request httpRequest = reqBuilder.build();
65
66    // 发送HTTP请求
67    OkHttpClient client = new OkHttpClient.Builder().build();
68    try (Response httpResponse = client.newCall(httpRequest).execute()) {
69      String respBody = WXPayUtility.extractBody(httpResponse);
70      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
71        // 2XX 成功，验证应答签名
72        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
73            httpResponse.headers(), respBody);
74
75        // 从HTTP应答报文构建返回数据
76        return WXPayUtility.fromJson(respBody, AcceptElecsignResponse.class);
77      } else {
78        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
79      }
80    } catch (IOException e) {
81      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
82    }
83  }
84
85  private final String mchid;
86  private final String certificateSerialNo;
87  private final PrivateKey privateKey;
88  private final String wechatPayPublicKeyId;
89  private final PublicKey wechatPayPublicKey;
90
91  public AcceptElecsignByOutNo(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
92    this.mchid = mchid;
93    this.certificateSerialNo = certificateSerialNo;
94    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
95    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
96    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
97  }
98
99  public static class AcceptElecsignByOutNoRequest {
100    @SerializedName("out_bill_no")
101    public String outBillNo;
102  }
103  
104  public static class AcceptElecsignResponse {
105    @SerializedName("state")
106    public ElecsignStatus state;
107  
108    @SerializedName("create_time")
109    public String createTime;
110  }
111  
112  public enum ElecsignStatus {
113    @SerializedName("GENERATING")
114    GENERATING,
115    @SerializedName("FINISHED")
116    FINISHED,
117    @SerializedName("FAILED")
118    FAILED
119  }
120  
121}
122

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		"填入 商户号",           // 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		"填入 商户API证书序列号",    // 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		"填入 商户API证书私钥文件路径", // 商户API证书私钥文件路径，本地文件路径
18		"填入 微信支付公钥ID",      // 微信支付公钥ID，如何获取请参考https://pay.weixin.qq.com/doc/v3/merchant/4013038816
19		"填入 微信支付公钥文件路径",    // 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 := &AcceptElecsignByOutNoRequest{
27		OutBillNo: wxpay_utility.String("plfk2020042013"),
28	}
29
30	response, err := AcceptElecsignByOutNo(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 AcceptElecsignByOutNo(config *wxpay_utility.MchConfig, request *AcceptElecsignByOutNoRequest) (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/out-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.Path, 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
75	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
76	if err != nil {
77		return nil, err
78	}
79
80	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
81		// 2XX 成功，验证应答签名
82		err = wxpay_utility.ValidateResponse(
83			config.WechatPayPublicKeyId(),
84			config.WechatPayPublicKey(),
85			&httpResponse.Header,
86			respBody,
87		)
88		if err != nil {
89			return nil, err
90		}
91
92		if err := json.Unmarshal(respBody, response); err != nil {
93			return nil, err
94		}
95
96		return response, nil
97	} else {
98		return nil, &wxpay_utility.ApiException{
99			StatusCode: httpResponse.StatusCode,
100			Header:     httpResponse.Header,
101			Body:       respBody,
102		}
103	}
104}
105
106type AcceptElecsignByOutNoRequest struct {
107	OutBillNo *string `json:"out_bill_no,omitempty"`
108}
109
110type AcceptElecsignResponse struct {
111	State      *ElecsignStatus `json:"state,omitempty"`
112	CreateTime *string         `json:"create_time,omitempty"`
113}
114
115type ElecsignStatus string
116
117func (e ElecsignStatus) Ptr() *ElecsignStatus {
118	return &e
119}
120
121const (
122	ELECSIGNSTATUS_GENERATING ElecsignStatus = "GENERATING"
123	ELECSIGNSTATUS_FINISHED   ElecsignStatus = "FINISHED"
124	ELECSIGNSTATUS_FAILED     ElecsignStatus = "FAILED"
125)

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/fund-app/mch-transfer/elecsign/out-bill-no \
3  -H "Authorization: WECHATPAY2-SHA256-RSA2048 mchid=\"1900000001\",..." \
4  -H "Accept: application/json" \
5  -H "Content-Type: application/json" \
6  -d '{
7    "out_bill_no" : "plfk2020042013"
8  }'
9