撤销转账

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/fund-app/mch-transfer/transfer-bills/out-bill-no/plfk2020042013/cancel \
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 * 撤销转账
24 */
25public class CancelTransfer {
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/transfer-bills/out-bill-no/{out_bill_no}/cancel";
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    CancelTransfer client = new CancelTransfer(
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    CancelTransferRequest request = new CancelTransferRequest();
41    request.outBillNo = "plfk2020042013";
42    try {
43      CancelTransferResponse 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 CancelTransferResponse run(CancelTransferRequest request) {
53    String uri = PATH;
54    uri = uri.replace("{out_bill_no}", WXPayUtility.urlEncode(request.outBillNo));
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.addHeader("Content-Type", "application/json");
61    RequestBody emptyBody = RequestBody.create(null, "");
62    reqBuilder.method(METHOD, emptyBody);
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, CancelTransferResponse.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 CancelTransfer(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 CancelTransferRequest {
99    @SerializedName("out_bill_no")
100    @Expose(serialize = false)
101    public String outBillNo;
102  }
103  
104  public static class CancelTransferResponse {
105    @SerializedName("out_bill_no")
106    public String outBillNo;
107  
108    @SerializedName("transfer_bill_no")
109    public String transferBillNo;
110  
111    @SerializedName("state")
112    public String state;
113  
114    @SerializedName("update_time")
115    public String updateTime;
116  }
117  
118}
119

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 := &CancelTransferRequest{
27		OutBillNo: wxpay_utility.String("plfk2020042013"),
28	}
29
30	response, err := CancelTransfer(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 CancelTransfer(config *wxpay_utility.MchConfig, request *CancelTransferRequest) (response *CancelTransferResponse, err error) {
42	const (
43		host   = "https://api.mch.weixin.qq.com"
44		method = "POST"
45		path   = "/v3/fund-app/mch-transfer/transfer-bills/out-bill-no/{out_bill_no}/cancel"
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, "{out_bill_no}", url.PathEscape(*request.OutBillNo), -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	httpRequest.Header.Set("Content-Type", "application/json")
60	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
61	if err != nil {
62		return nil, err
63	}
64	httpRequest.Header.Set("Authorization", authorization)
65
66	client := &http.Client{}
67	httpResponse, err := client.Do(httpRequest)
68	if err != nil {
69		return nil, err
70	}
71	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
72	if err != nil {
73		return nil, err
74	}
75	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
76		// 2XX 成功，验证应答签名
77		err = wxpay_utility.ValidateResponse(
78			config.WechatPayPublicKeyId(),
79			config.WechatPayPublicKey(),
80			&httpResponse.Header,
81			respBody,
82		)
83		if err != nil {
84			return nil, err
85		}
86		response := &CancelTransferResponse{}
87		if err := json.Unmarshal(respBody, response); err != nil {
88			return nil, err
89		}
90
91		return response, nil
92	} else {
93		return nil, wxpay_utility.NewApiException(
94			httpResponse.StatusCode,
95			httpResponse.Header,
96			respBody,
97		)
98	}
99}
100
101type CancelTransferRequest struct {
102	OutBillNo *string `json:"out_bill_no,omitempty"`
103}
104
105func (o *CancelTransferRequest) MarshalJSON() ([]byte, error) {
106	type Alias CancelTransferRequest
107	a := &struct {
108		OutBillNo *string `json:"out_bill_no,omitempty"`
109		*Alias
110	}{
111		// 序列化时移除非 Body 字段
112		OutBillNo: nil,
113		Alias:     (*Alias)(o),
114	}
115	return json.Marshal(a)
116}
117
118type CancelTransferResponse struct {
119	OutBillNo      *string `json:"out_bill_no,omitempty"`
120	TransferBillNo *string `json:"transfer_bill_no,omitempty"`
121	State          *string `json:"state,omitempty"`
122	UpdateTime     *string `json:"update_time,omitempty"`
123}
124