H5预签约

1curl -X POST \
2  https://api.mch.weixin.qq.com/v3/credit-repayment/partner/contracts/h5-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_mchid" : "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    "trade_info" : {
23      "out_trade_no" : "1217752501201407033233368018",
24      "deduct_amount" : "10000",
25      "description" : "信贷还款",
26      "attach" : "备注信息",
27      "notify_url" : "https://www.test.com"
28    },
29    "jump_info" : {
30      "jump_appid" : "example_jump_appid"
31    }
32  }'
33

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 * H5预签约
24 */
25public class PartnerPresignContractByH5 {
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/h5-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    PartnerPresignContractByH5 client = new PartnerPresignContractByH5(
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    PresignContractByH5Request request = new PresignContractByH5Request();
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.subMchid = "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    request.tradeInfo = new TradeInfo();
55    request.tradeInfo.outTradeNo = "1217752501201407033233368018";
56    request.tradeInfo.deductAmount = "10000";
57    request.tradeInfo.description = "信贷还款";
58    request.tradeInfo.attach = "备注信息";
59    request.tradeInfo.notifyUrl = "https://www.test.com";
60    request.jumpInfo = new JumpInfo();
61    request.jumpInfo.jumpAppid = "example_jump_appid";
62    try {
63      PresignContractByH5Response response = client.run(request);
64        // TODO: 请求成功，继续业务逻辑
65        System.out.println(response);
66    } catch (WXPayUtility.ApiException e) {
67        // TODO: 请求失败，根据状态码执行不同的逻辑
68        e.printStackTrace();
69    }
70  }
71
72  public PresignContractByH5Response run(PresignContractByH5Request request) {
73    String uri = PATH;
74    String reqBody = WXPayUtility.toJson(request);
75
76    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
77    reqBuilder.addHeader("Accept", "application/json");
78    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
79    reqBuilder.addHeader("Authorization", WXPayUtility.buildAuthorization(mchid, certificateSerialNo,privateKey, METHOD, uri, reqBody));
80    reqBuilder.addHeader("Content-Type", "application/json");
81    RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), reqBody);
82    reqBuilder.method(METHOD, requestBody);
83    Request httpRequest = reqBuilder.build();
84
85    // 发送HTTP请求
86    OkHttpClient client = new OkHttpClient.Builder().build();
87    try (Response httpResponse = client.newCall(httpRequest).execute()) {
88      String respBody = WXPayUtility.extractBody(httpResponse);
89      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
90        // 2XX 成功，验证应答签名
91        WXPayUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
92            httpResponse.headers(), respBody);
93
94        // 从HTTP应答报文构建返回数据
95        return WXPayUtility.fromJson(respBody, PresignContractByH5Response.class);
96      } else {
97        throw new WXPayUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
98      }
99    } catch (IOException e) {
100      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
101    }
102  }
103
104  private final String mchid;
105  private final String certificateSerialNo;
106  private final PrivateKey privateKey;
107  private final String wechatPayPublicKeyId;
108  private final PublicKey wechatPayPublicKey;
109
110  public PartnerPresignContractByH5(String mchid, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
111    this.mchid = mchid;
112    this.certificateSerialNo = certificateSerialNo;
113    this.privateKey = WXPayUtility.loadPrivateKeyFromPath(privateKeyFilePath);
114    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
115    this.wechatPayPublicKey = WXPayUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
116  }
117
118  public String encrypt(String plainText) {
119    return WXPayUtility.encrypt(this.wechatPayPublicKey, plainText);
120  }
121
122  public static class PresignContractByH5Request {
123    @SerializedName("appid")
124    public String appid;
125  
126    @SerializedName("plan_id")
127    public String planId;
128  
129    @SerializedName("out_contract_code")
130    public String outContractCode;
131  
132    @SerializedName("display_name")
133    public String displayName;
134  
135    @SerializedName("contract_notify_url")
136    public String contractNotifyUrl;
137  
138    @SerializedName("repayment_day")
139    public Long repaymentDay;
140  
141    @SerializedName("repayment_amount_limit")
142    public String repaymentAmountLimit;
143  
144    @SerializedName("sub_mchid")
145    public String subMchid;
146  
147    @SerializedName("sub_appid")
148    public String subAppid;
149  
150    @SerializedName("real_identity")
151    public RealIdentity realIdentity;
152  
153    @SerializedName("trade_info")
154    public TradeInfo tradeInfo;
155  
156    @SerializedName("jump_info")
157    public JumpInfo jumpInfo;
158  }
159  
160  public static class PresignContractByH5Response {
161    @SerializedName("redirect_url")
162    public String redirectUrl;
163  }
164  
165  public static class RealIdentity {
166    @SerializedName("identity_type")
167    public RealIdentityType identityType;
168  
169    @SerializedName("identity_id")
170    public String identityId;
171  
172    @SerializedName("real_name")
173    public String realName;
174  }
175  
176  public static class TradeInfo {
177    @SerializedName("out_trade_no")
178    public String outTradeNo;
179  
180    @SerializedName("deduct_amount")
181    public String deductAmount;
182  
183    @SerializedName("description")
184    public String description;
185  
186    @SerializedName("attach")
187    public String attach;
188  
189    @SerializedName("notify_url")
190    public String notifyUrl;
191  }
192  
193  public static class JumpInfo {
194    @SerializedName("jump_appid")
195    public String jumpAppid;
196  }
197  
198  public enum RealIdentityType {
199    @SerializedName("REAL_IDENTITY_TYPE_INVALID")
200    REAL_IDENTITY_TYPE_INVALID,
201    @SerializedName("REAL_IDENTITY_TYPE_ID_CARD")
202    REAL_IDENTITY_TYPE_ID_CARD
203  }
204  
205}
206

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 := &PresignContractByH5Request{
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		SubMchid:             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		TradeInfo: &TradeInfo{
42			OutTradeNo:   wxpay_utility.String("1217752501201407033233368018"),
43			DeductAmount: wxpay_utility.String("10000"),
44			Description:  wxpay_utility.String("信贷还款"),
45			Attach:       wxpay_utility.String("备注信息"),
46			NotifyUrl:    wxpay_utility.String("https://www.test.com"),
47		},
48		JumpInfo: &JumpInfo{
49			JumpAppid: wxpay_utility.String("example_jump_appid"),
50		},
51	}
52
53	response, err := PartnerPresignContractByH5(config, request)
54	if err != nil {
55		fmt.Printf("请求失败: %+v\n", err)
56		// TODO: 请求失败，根据状态码执行不同的处理
57		return
58	}
59
60	// TODO: 请求成功，继续业务逻辑
61	fmt.Printf("请求成功: %+v\n", response)
62}
63
64func PartnerPresignContractByH5(config *wxpay_utility.MchConfig, request *PresignContractByH5Request) (response *PresignContractByH5Response, err error) {
65	const (
66		host   = "https://api.mch.weixin.qq.com"
67		method = "POST"
68		path   = "/v3/credit-repayment/partner/contracts/h5-presign"
69	)
70
71	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
72	if err != nil {
73		return nil, err
74	}
75	reqBody, err := json.Marshal(request)
76	if err != nil {
77		return nil, err
78	}
79	httpRequest, err := http.NewRequest(method, reqUrl.String(), bytes.NewReader(reqBody))
80	if err != nil {
81		return nil, err
82	}
83	httpRequest.Header.Set("Accept", "application/json")
84	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
85	httpRequest.Header.Set("Content-Type", "application/json")
86	authorization, err := wxpay_utility.BuildAuthorization(config.MchId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), reqBody)
87	if err != nil {
88		return nil, err
89	}
90	httpRequest.Header.Set("Authorization", authorization)
91
92	client := &http.Client{}
93	httpResponse, err := client.Do(httpRequest)
94	if err != nil {
95		return nil, err
96	}
97	respBody, err := wxpay_utility.ExtractResponseBody(httpResponse)
98	if err != nil {
99		return nil, err
100	}
101	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
102		// 2XX 成功，验证应答签名
103		err = wxpay_utility.ValidateResponse(
104			config.WechatPayPublicKeyId(),
105			config.WechatPayPublicKey(),
106			&httpResponse.Header,
107			respBody,
108		)
109		if err != nil {
110			return nil, err
111		}
112		response := &PresignContractByH5Response{}
113		if err := json.Unmarshal(respBody, response); err != nil {
114			return nil, err
115		}
116
117		return response, nil
118	} else {
119		return nil, wxpay_utility.NewApiException(
120			httpResponse.StatusCode,
121			httpResponse.Header,
122			respBody,
123		)
124	}
125}
126
127type PresignContractByH5Request struct {
128	Appid                *string       `json:"appid,omitempty"`
129	PlanId               *string       `json:"plan_id,omitempty"`
130	OutContractCode      *string       `json:"out_contract_code,omitempty"`
131	DisplayName          *string       `json:"display_name,omitempty"`
132	ContractNotifyUrl    *string       `json:"contract_notify_url,omitempty"`
133	RepaymentDay         *int64        `json:"repayment_day,omitempty"`
134	RepaymentAmountLimit *string       `json:"repayment_amount_limit,omitempty"`
135	SubMchid             *string       `json:"sub_mchid,omitempty"`
136	SubAppid             *string       `json:"sub_appid,omitempty"`
137	RealIdentity         *RealIdentity `json:"real_identity,omitempty"`
138	TradeInfo            *TradeInfo    `json:"trade_info,omitempty"`
139	JumpInfo             *JumpInfo     `json:"jump_info,omitempty"`
140}
141
142type PresignContractByH5Response struct {
143	RedirectUrl *string `json:"redirect_url,omitempty"`
144}
145
146type RealIdentity struct {
147	IdentityType *RealIdentityType `json:"identity_type,omitempty"`
148	IdentityId   *string           `json:"identity_id,omitempty"`
149	RealName     *string           `json:"real_name,omitempty"`
150}
151
152type TradeInfo struct {
153	OutTradeNo   *string `json:"out_trade_no,omitempty"`
154	DeductAmount *string `json:"deduct_amount,omitempty"`
155	Description  *string `json:"description,omitempty"`
156	Attach       *string `json:"attach,omitempty"`
157	NotifyUrl    *string `json:"notify_url,omitempty"`
158}
159
160type JumpInfo struct {
161	JumpAppid *string `json:"jump_appid,omitempty"`
162}
163
164type RealIdentityType string
165
166func (e RealIdentityType) Ptr() *RealIdentityType {
167	return &e
168}
169
170const (
171	REALIDENTITYTYPE_REAL_IDENTITY_TYPE_INVALID RealIdentityType = "REAL_IDENTITY_TYPE_INVALID"
172	REALIDENTITYTYPE_REAL_IDENTITY_TYPE_ID_CARD RealIdentityType = "REAL_IDENTITY_TYPE_ID_CARD"
173)
174