APP预签约

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/credit-repayment/partner/contracts/app-presign \
3  -H "Authorization: WECHATPAY2-SHA256-RSA2048 mchid=\"1900000001\",..." \
4  -H "Accept: application/json" \
5  -H "Wechatpay-Serial: 5157F09EFDC096DE15EBE81A47057A7232F1B8E1"  \
6  -H "Content-Type: application/json" \
7  -d '{
8    "appid" : "wxd678efh567hg6787",
9    "plan_id" : "WxCreditRepaymentPlan12345678",
10    "out_contract_code" : "WxCreditRepayment20200910100000",
11    "display_name" : "*明",
12    "contract_notify_url" : "https://yourapp.com/notify",
13    "repayment_day" : 1,
14    "repayment_amount_limit" : "10000",
15    "sub_merchant_code" : "1000000109",
16    "sub_appid" : "wxcbda96de0b165489",
17    "real_identity" : {
18      "identity_type" : "REAL_IDENTITY_TYPE_ID_CARD",
19      "identity_id" : "1axtI9EZUr0343c89xQznxau+cRWPKP4YhVAoj/mEoNSgJh0nvuqQJ1cdXZHGUzyBjOtuLeVq+OLOaWGUScSM8+QLBk+kOK8QyR1TUo44YrmIl5KkjWLa3dpNJt+nIkpN1e7yr2mxO9LGqJdeQXDCHvOiUTK6lnAVxWY0ZrF4OQFmHqOCvqTaF3VxD5a8AT3gxyayF04IJSfPV0NheZvWFBHIUeRPf1/WQmJ/wXu2MfAuESB0dLBglT85i0Rws2GopaTUNiBuJBHdg01bR+YZvSYv8EJPyxuyYVh5bg/wSotNTYnVp13OUzMBKu25yOW5+RnunesXwq9ogPnSj7EDA==",
20      "real_name" : "OEimkKuua8igpd+0YDgqF2Z61leeGD7x87j3PhzsBhAK+/lltXENEOf6ThgV7niChzIpDujIpefE2JFZCJFurf6IV5rxNWBbjFeHYyUGAbf8zDx2Wbi7y7BGjApltIhsxAk+LhQ648Kcw4FMidL/79Gh3nHUfSGX+nEl3gtNi24Ilt8Vu0MMXhA1suDzlpbNDDrYnAhb1eeMziSu8jW7lDouwJXjGh9zgFPUuTxfOpteJIZSy8HWR+QPugdXBNouEezDPN8kojKbJHRtjaBJY3n3agkXShI5yvnc+DCYM+4VgNWZpTx9D0w3KAylJPKAAluYMzj4VXzZurjpruDg2A=="
21    }
22  }'
23

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 * App预签约
24 */
25public class PartnerPresignContractByApp {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "POST";
28  private static String PATH = "/v3/credit-repayment/partner/contracts/app-presign";
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    PartnerPresignContractByApp client = new PartnerPresignContractByApp(
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    PresignContractByAppRequest request = new PresignContractByAppRequest();
41    request.appid = "wxd678efh567hg6787";
42    request.planId = "WxCreditRepaymentPlan12345678";
43    request.outContractCode = "WxCreditRepayment20200910100000";
44    request.displayName = "*明";
45    request.contractNotifyUrl = "https://yourapp.com/notify";
46    request.repaymentDay = 1L;
47    request.repaymentAmountLimit = "10000";
48    request.subMerchantCode = "1000000109";
49    request.subAppid = "wxcbda96de0b165489";
50    request.realIdentity = new RealIdentity();
51    request.realIdentity.identityType = RealIdentityType.REAL_IDENTITY_TYPE_ID_CARD;
52    request.realIdentity.identityId = client.encrypt("identity_id");
53    request.realIdentity.realName = client.encrypt("real_name");
54    try {
55      PresignContractByAppResponse response = client.run(request);
56        // TODO: 请求成功，继续业务逻辑
57        System.out.println(response);
58    } catch (WXPayUtility.ApiException e) {
59        // TODO: 请求失败，根据状态码执行不同的逻辑
60        e.printStackTrace();
61    }
62  }
63
64  public PresignContractByAppResponse run(PresignContractByAppRequest request) {
65    String uri = PATH;
66    String reqBody = WXPayUtility.toJson(request);
67
68    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
69    reqBuilder.addHeader("Accept", "application/json");
70    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
71    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo,privateKey, METHOD, uri, reqBody));
72    reqBuilder.addHeader("Content-Type", "application/json");
73    RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), reqBody);
74    reqBuilder.method(METHOD, requestBody);
75    Request httpRequest = reqBuilder.build();
76
77    // 发送HTTP请求
78    OkHttpClient client = new OkHttpClient.Builder().build();
79    try (Response httpResponse = client.newCall(httpRequest).execute()) {
80      String respBody = WXPayUtility.extractBody(httpResponse);
81      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
82        // 2XX 成功，验证应答签名
83        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
84            httpResponse.headers(), respBody);
85
86        // 从HTTP应答报文构建返回数据
87        return WXPayUtility.fromJson(respBody, PresignContractByAppResponse.class);
88      } else {
89        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
90      }
91    } catch (IOException e) {
92      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
93    }
94  }
95
96  private final String mchid;
97  private final String certificateSerialNo;
98  private final PrivateKey privateKey;
99  private final String wechatPayPublicKeyId;
100  private final PublicKey wechatPayPublicKey;
101
102  public PartnerPresignContractByApp(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
103    this.mchid = mchid;
104    this.certificateSerialNo = certificateSerialNo;
105    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
106    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
107    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
108  }
109
110  public String encrypt(String plainText) {
111    return WXPayUtility.encrypt(this.wechatPayPublicKey, plainText);
112  }
113
114  public static class PresignContractByAppRequest {
115    @SerializedName("appid")
116    public String appid;
117  
118    @SerializedName("plan_id")
119    public String planId;
120  
121    @SerializedName("out_contract_code")
122    public String outContractCode;
123  
124    @SerializedName("display_name")
125    public String displayName;
126  
127    @SerializedName("contract_notify_url")
128    public String contractNotifyUrl;
129  
130    @SerializedName("repayment_day")
131    public Long repaymentDay;
132  
133    @SerializedName("repayment_amount_limit")
134    public String repaymentAmountLimit;
135  
136    @SerializedName("sub_merchant_code")
137    public String subMerchantCode;
138  
139    @SerializedName("sub_appid")
140    public String subAppid;
141  
142    @SerializedName("real_identity")
143    public RealIdentity realIdentity;
144  }
145  
146  public static class PresignContractByAppResponse {
147    @SerializedName("presign_token")
148    public String presignToken;
149  
150    @SerializedName("redirect_service")
151    public String redirectService;
152  }
153  
154  public static class RealIdentity {
155    @SerializedName("identity_type")
156    public RealIdentityType identityType;
157  
158    @SerializedName("identity_id")
159    public String identityId;
160  
161    @SerializedName("real_name")
162    public String realName;
163  }
164  
165  public enum RealIdentityType {
166    @SerializedName("REAL_IDENTITY_TYPE_INVALID")
167    REAL_IDENTITY_TYPE_INVALID,
168    @SerializedName("REAL_IDENTITY_TYPE_ID_CARD")
169    REAL_IDENTITY_TYPE_ID_CARD
170  }
171  
172}
173

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)
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/partner/4013080340
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/partner/4013080340
16		"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
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/partner/4013038589
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 := &PresignContractByAppRequest{
27		Appid:                wxpay_utility.String("wxd678efh567hg6787"),
28		PlanId:               wxpay_utility.String("WxCreditRepaymentPlan12345678"),
29		OutContractCode:      wxpay_utility.String("WxCreditRepayment20200910100000"),
30		DisplayName:          wxpay_utility.String("*明"),
31		ContractNotifyUrl:    wxpay_utility.String("https://yourapp.com/notify"),
32		RepaymentDay:         wxpay_utility.Int64(1),
33		RepaymentAmountLimit: wxpay_utility.String("10000"),
34		SubMerchantCode:      wxpay_utility.String("1000000109"),
35		SubAppid:             wxpay_utility.String("wxcbda96de0b165489"),
36		RealIdentity: &RealIdentity{
37			IdentityType: REALIDENTITYTYPE_REAL_IDENTITY_TYPE_ID_CARD.Ptr(),
38			IdentityId:   wxpay_utility.String("1axtI9EZUr0343c89xQznxau+cRWPKP4YhVAoj/mEoNSgJh0nvuqQJ1cdXZHGUzyBjOtuLeVq+OLOaWGUScSM8+QLBk+kOK8QyR1TUo44YrmIl5KkjWLa3dpNJt+nIkpN1e7yr2mxO9LGqJdeQXDCHvOiUTK6lnAVxWY0ZrF4OQFmHqOCvqTaF3VxD5a8AT3gxyayF04IJSfPV0NheZvWFBHIUeRPf1/WQmJ/wXu2MfAuESB0dLBglT85i0Rws2GopaTUNiBuJBHdg01bR+YZvSYv8EJPyxuyYVh5bg/wSotNTYnVp13OUzMBKu25yOW5+RnunesXwq9ogPnSj7EDA=="), /*请传入wxpay_utility.EncryptOAEPWithPublicKey 加密结果*/
39			RealName:     wxpay_utility.String("OEimkKuua8igpd+0YDgqF2Z61leeGD7x87j3PhzsBhAK+/lltXENEOf6ThgV7niChzIpDujIpefE2JFZCJFurf6IV5rxNWBbjFeHYyUGAbf8zDx2Wbi7y7BGjApltIhsxAk+LhQ648Kcw4FMidL/79Gh3nHUfSGX+nEl3gtNi24Ilt8Vu0MMXhA1suDzlpbNDDrYnAhb1eeMziSu8jW7lDouwJXjGh9zgFPUuTxfOpteJIZSy8HWR+QPugdXBNouEezDPN8kojKbJHRtjaBJY3n3agkXShI5yvnc+DCYM+4VgNWZpTx9D0w3KAylJPKAAluYMzj4VXzZurjpruDg2A=="), /*请传入wxpay_utility.EncryptOAEPWithPublicKey 加密结果*/
40		},
41	}
42
43	response, err := PartnerPresignContractByApp(config, request)
44	if err != nil {
45		fmt.Printf("请求失败: %+v\n", err)
46		// TODO: 请求失败，根据状态码执行不同的处理
47		return
48	}
49
50	// TODO: 请求成功，继续业务逻辑
51	fmt.Printf("请求成功: %+v\n", response)
52}
53
54func PartnerPresignContractByApp(config *wxpay_utility.MchConfig, request *PresignContractByAppRequest) (response *PresignContractByAppResponse, err error) {
55	const (
56		host   = "https://api.mch.weixin.qq.com"
57		method = "POST"
58		path   = "/v3/credit-repayment/partner/contracts/app-presign"
59	)
60
61	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
62	if err != nil {
63		return nil, err
64	}
65	reqBody, err := json.Marshal(request)
66	if err != nil {
67		return nil, err
68	}
69	httpRequest, err := http.NewRequest(method, reqUrl.String(), bytes.NewReader(reqBody))
70	if err != nil {
71		return nil, err
72	}
73	httpRequest.Header.Set("Accept", "application/json")
74	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
75	httpRequest.Header.Set("Content-Type", "application/json")
76	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), reqBody)
77	if err != nil {
78		return nil, err
79	}
80	httpRequest.Header.Set("Authorization", authorization)
81
82	client := &http.Client{}
83	httpResponse, err := client.Do(httpRequest)
84	if err != nil {
85		return nil, err
86	}
87	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
88	if err != nil {
89		return nil, err
90	}
91	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
92		// 2XX 成功，验证应答签名
93		err = wxpay_utility.ValidateResponse(
94			config.WechatPayPublicKeyId(),
95			config.WechatPayPublicKey(),
96			&httpResponse.Header,
97			respBody,
98		)
99		if err != nil {
100			return nil, err
101		}
102		response := &PresignContractByAppResponse{}
103		if err := json.Unmarshal(respBody, response); err != nil {
104			return nil, err
105		}
106
107		return response, nil
108	} else {
109		return nil, wxpay_utility.NewApiException(
110			httpResponse.StatusCode,
111			httpResponse.Header,
112			respBody,
113		)
114	}
115}
116
117type PresignContractByAppRequest struct {
118	Appid                *string       `json:"appid,omitempty"`
119	PlanId               *string       `json:"plan_id,omitempty"`
120	OutContractCode      *string       `json:"out_contract_code,omitempty"`
121	DisplayName          *string       `json:"display_name,omitempty"`
122	ContractNotifyUrl    *string       `json:"contract_notify_url,omitempty"`
123	RepaymentDay         *int64        `json:"repayment_day,omitempty"`
124	RepaymentAmountLimit *string       `json:"repayment_amount_limit,omitempty"`
125	SubMerchantCode      *string       `json:"sub_merchant_code,omitempty"`
126	SubAppid             *string       `json:"sub_appid,omitempty"`
127	RealIdentity         *RealIdentity `json:"real_identity,omitempty"`
128}
129
130type PresignContractByAppResponse struct {
131	PresignToken    *string `json:"presign_token,omitempty"`
132	RedirectService *string `json:"redirect_service,omitempty"`
133}
134
135type RealIdentity struct {
136	IdentityType *RealIdentityType `json:"identity_type,omitempty"`
137	IdentityId   *string           `json:"identity_id,omitempty"`
138	RealName     *string           `json:"real_name,omitempty"`
139}
140
141type RealIdentityType string
142
143func (e RealIdentityType) Ptr() *RealIdentityType {
144	return &e
145}
146
147const (
148	REALIDENTITYTYPE_REAL_IDENTITY_TYPE_INVALID RealIdentityType = "REAL_IDENTITY_TYPE_INVALID"
149	REALIDENTITYTYPE_REAL_IDENTITY_TYPE_ID_CARD RealIdentityType = "REAL_IDENTITY_TYPE_ID_CARD"
150)
151