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_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  }'
30

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

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