商户关单

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/repayment/combine-transactions/partner/out-trade-no/1217752501201407033233368018/close \
3  -H "Authorization: WECHATPAY2-SHA256-RSA2048 mchid=\"1900000001\",..." \
4  -H "Accept: application/json" \
5  -H "Content-Type: application/json" \
6  -d '{
7    "sub_orders" : [
8      {
9        "mchid" : "1230000109",
10        "out_trade_no" : "20150806125346",
11        "sub_mchid" : "1900000109"
12      }
13    ]
14  }'
15

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 * 商户关单(还款)
24 */
25public class RepaymentClose {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "POST";
28  private static String PATH = "/v3/repayment/combine-transactions/partner/out-trade-no/{combine_out_trade_no}/close";
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    RepaymentClose client = new RepaymentClose(
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    RepaymentCloseRequest request = new RepaymentCloseRequest();
41    request.combineOutTradeNo = "1217752501201407033233368018";
42    request.subOrders = new ArrayList<>();
43    {
44      RepaymentCloseSubOrder subOrdersItem = new RepaymentCloseSubOrder();
45      subOrdersItem.mchid = "1230000109";
46      subOrdersItem.outTradeNo = "20150806125346";
47      subOrdersItem.subMchid = "1900000109";
48      request.subOrders.add(subOrdersItem);
49    };
50    try {
51      client.run(request);
52    } catch (WXPayUtility.ApiException e) {
53        // TODO: 请求失败，根据状态码执行不同的逻辑
54        e.printStackTrace();
55    }
56  }
57
58  public void run(RepaymentCloseRequest request) {
59    String uri = PATH;
60    uri = uri.replace("{combine_out_trade_no}", WXPayUtility.urlEncode(request.combineOutTradeNo));
61    String reqBody = WXPayUtility.toJson(request);
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, reqBody));
67    reqBuilder.addHeader("Content-Type", "application/json");
68    RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), reqBody);
69    reqBuilder.method(METHOD, requestBody);
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        return;
82      } else {
83        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
84      }
85    } catch (IOException e) {
86      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
87    }
88  }
89
90  private final String mchid;
91  private final String certificateSerialNo;
92  private final PrivateKey privateKey;
93  private final String wechatPayPublicKeyId;
94  private final PublicKey wechatPayPublicKey;
95
96  public RepaymentClose(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
97    this.mchid = mchid;
98    this.certificateSerialNo = certificateSerialNo;
99    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
100    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
101    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
102  }
103
104  public static class RepaymentCloseRequest {
105    @SerializedName("combine_out_trade_no")
106    @Expose(serialize = false)
107    public String combineOutTradeNo;
108  
109    @SerializedName("sub_orders")
110    public List<RepaymentCloseSubOrder> subOrders = new ArrayList<RepaymentCloseSubOrder>();
111  }
112  
113  public static class RepaymentCloseSubOrder {
114    @SerializedName("mchid")
115    public String mchid;
116  
117    @SerializedName("out_trade_no")
118    public String outTradeNo;
119  
120    @SerializedName("sub_mchid")
121    public String subMchid;
122  }
123  
124}
125

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/partner/4015119446
6	"encoding/json"
7	"fmt"
8	"net/http"
9	"net/url"
10	"strings"
11)
12
13func main() {
14	// TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/v3/partner/4013080340
15	config, err := wxpay_utility.CreateMchConfig(
16		"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
17		"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
18		"/path/to/apiclient_key.pem", // 商户API证书私钥文件路径，本地文件路径
19		"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
20		"/path/to/wxp_pub.pem",       // 微信支付公钥文件路径，本地文件路径
21	)
22	if err != nil {
23		fmt.Println(err)
24		return
25	}
26
27	request := &RepaymentCloseRequest{
28		CombineOutTradeNo: wxpay_utility.String("1217752501201407033233368018"),
29		SubOrders: []RepaymentCloseSubOrder{RepaymentCloseSubOrder{
30			Mchid:      wxpay_utility.String("1230000109"),
31			OutTradeNo: wxpay_utility.String("20150806125346"),
32			SubMchid:   wxpay_utility.String("1900000109"),
33		}},
34	}
35
36	err = RepaymentClose(config, request)
37	if err != nil {
38		fmt.Printf("请求失败: %+v\n", err)
39		// TODO: 请求失败，根据状态码执行不同的处理
40		return
41	}
42
43	// TODO: 请求成功，继续业务逻辑
44	fmt.Println("请求成功")
45}
46
47func RepaymentClose(config *wxpay_utility.MchConfig, request *RepaymentCloseRequest) (err error) {
48	const (
49		host   = "https://api.mch.weixin.qq.com"
50		method = "POST"
51		path   = "/v3/repayment/combine-transactions/partner/out-trade-no/{combine_out_trade_no}/close"
52	)
53
54	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
55	if err != nil {
56		return err
57	}
58	reqUrl.Path = strings.Replace(reqUrl.Path, "{combine_out_trade_no}", url.PathEscape(*request.CombineOutTradeNo), -1)
59	reqBody, err := json.Marshal(request)
60	if err != nil {
61		return err
62	}
63	httpRequest, err := http.NewRequest(method, reqUrl.String(), bytes.NewReader(reqBody))
64	if err != nil {
65		return err
66	}
67	httpRequest.Header.Set("Accept", "application/json")
68	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
69	httpRequest.Header.Set("Content-Type", "application/json")
70	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), reqBody)
71	if err != nil {
72		return err
73	}
74	httpRequest.Header.Set("Authorization", authorization)
75
76	client := &http.Client{}
77	httpResponse, err := client.Do(httpRequest)
78	if err != nil {
79		return err
80	}
81	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
82	if err != nil {
83		return err
84	}
85	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
86		// 2XX 成功，验证应答签名
87		err = wxpay_utility.ValidateResponse(
88			config.WechatPayPublicKeyId(),
89			config.WechatPayPublicKey(),
90			&httpResponse.Header,
91			respBody,
92		)
93		if err != nil {
94			return err
95		}
96		return nil
97	} else {
98		return wxpay_utility.NewApiException(
99			httpResponse.StatusCode,
100			httpResponse.Header,
101			respBody,
102		)
103	}
104}
105
106type RepaymentCloseRequest struct {
107	CombineOutTradeNo *string                  `json:"combine_out_trade_no,omitempty"`
108	SubOrders         []RepaymentCloseSubOrder `json:"sub_orders,omitempty"`
109}
110
111func (o *RepaymentCloseRequest) MarshalJSON() ([]byte, error) {
112	type Alias RepaymentCloseRequest
113	a := &struct {
114		CombineOutTradeNo *string `json:"combine_out_trade_no,omitempty"`
115		*Alias
116	}{
117		// 序列化时移除非 Body 字段
118		CombineOutTradeNo: nil,
119		Alias:             (*Alias)(o),
120	}
121	return json.Marshal(a)
122}
123
124type RepaymentCloseSubOrder struct {
125	Mchid      *string `json:"mchid,omitempty"`
126	OutTradeNo *string `json:"out_trade_no,omitempty"`
127	SubMchid   *string `json:"sub_mchid,omitempty"`
128}
129