636 lines
17 KiB
Markdown
636 lines
17 KiB
Markdown
// File: xy_sh/types.go
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```go
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package xy_sh
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// ===== 接口1：卡券/直充权益下单接口 =====
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// OrderRequest 下单接口业务请求参数
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type OrderRequest struct {
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ActCode string `json:"actCode"` // 活动code
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GoodsCode string `json:"goodsCode"` // 供应商商品编号
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ActOrderNum string `json:"actOrderNum"` // 活动方订单号，唯一
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Account string `json:"account,omitempty"` // 充值账号
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CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址
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}
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// OrderData 下单接口响应解密后的业务数据
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type OrderData struct {
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OrderNo string `json:"orderNo"` // 供应商订单号
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CouponNo string `json:"couponNo,omitempty"` // 卡号/短链
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CouponCode string `json:"couponCode,omitempty"` // 卡密
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Status int `json:"status"` // 状态：-1发放中 0成功 1失败 2已核销 3已过期
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ExpireTime string `json:"expireTime,omitempty"` // 有效期 yyyy-MM-dd HH:mm:ss
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}
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// OrderResponse 下单接口响应
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type OrderResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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Data *OrderData `json:"data,omitempty"`
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}
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// ===== 接口2：卡券/直充/微信立减金订单查询接口 =====
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// QueryRequest 查询接口业务请求参数
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type QueryRequest struct {
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ActCode string `json:"actCode"` // 活动code
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OrderNo string `json:"orderNo"` // 供应商订单号
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}
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// QueryData 查询接口响应解密后的业务数据
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type QueryData struct {
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OrderNo string `json:"orderNo"` // 供应商订单号
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Status int `json:"status"` // 订单状态
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Account string `json:"account,omitempty"` // 充值账号，直充类型时存在
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CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息
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CouponId string `json:"couponId,omitempty"` // 微信优惠id
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}
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// QueryResponse 查询接口响应
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type QueryResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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Data *QueryData `json:"data,omitempty"`
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}
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// CardInfo 卡券信息
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type CardInfo struct {
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CouponNo string `json:"couponNo"` // 卡号/短链
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CouponCode string `json:"couponCode"` // 卡密
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ExpireTime string `json:"expireTime"` // 过期时间 yyyy-MM-dd HH:mm:ss
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}
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// ===== 接口3：微信立减金订单充值接口 =====
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// WechatRechargeRequest 微信立减金充值业务请求参数
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type WechatRechargeRequest struct {
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ActCode string `json:"actCode"` // 活动code
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OrderNo string `json:"orderNo"` // 供应商订单号
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GoodsCode string `json:"goodsCode"` // 供应商商品编号
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ActOrderNum string `json:"actOrderNum"` // 活动方订单号，唯一
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AppId string `json:"appId"` // 公众账号ID
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OpenId string `json:"openId"` // 微信用户标识
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CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址
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}
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// WechatRechargeData 微信立减金充值响应解密后的业务数据
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type WechatRechargeData struct {
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OrderNo string `json:"orderNo"` // 供应商订单号
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Status int `json:"status"` // 订单状态
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CouponId string `json:"couponId,omitempty"` // 微信优惠id
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}
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// WechatRechargeResponse 微信立减金充值响应
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type WechatRechargeResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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Data *WechatRechargeData `json:"data,omitempty"`
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}
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// ===== 接口4：回调通知接口 =====
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// CallbackRequest 回调通知业务请求参数
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type CallbackRequest struct {
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OrderNo string `json:"orderNo"` // 供应商订单号
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ActOrderNum string `json:"actOrderNum"` // 活动方订单号
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Status int `json:"status"` // 订单状态
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Account string `json:"account,omitempty"` // 直充账号
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CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息
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CouponId string `json:"couponId,omitempty"` // 微信优惠id
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}
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// CallbackResponse 回调通知响应（HTTP响应）
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type CallbackResponse struct {
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StatusCode int `json:"-"` // HTTP状态码
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Body string `json:"-"` // 响应体内容
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}
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// ===== 通用结构 =====
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// EncryptedRequest 加密请求体
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type EncryptedRequest struct {
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EncryptedData string `json:"encryptedData"`
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}
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// RawResponse 原始响应结构，data 字段为加密后的 JSON 字符串
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type RawResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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Data string `json:"data"`
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}
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```
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// File: xy_sh/errors.go
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```go
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package xy_sh
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import "fmt"
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// Error 自定义错误类型，包含返回码和错误信息
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type Error struct {
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Code int `json:"code"`
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Message string `json:"msg"`
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}
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// Error 实现 error 接口
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func (e *Error) Error() string {
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return fmt.Sprintf("code=%d, msg=%s", e.Code, e.Message)
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}
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// IsSuccess 判断业务返回码是否表示成功
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func IsSuccess(code int) bool {
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return code == 0
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}
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```
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// File: xy_sh/crypto.go
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```go
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package xy_sh
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import (
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"bytes"
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"crypto/cipher"
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"crypto/hmac"
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"crypto/rand"
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"encoding/base64"
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"encoding/hex"
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"fmt"
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"io"
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"time"
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"github.com/tjfoc/gmsm/sm3"
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"github.com/tjfoc/gmsm/sm4"
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)
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// GenerateTimestampMillis 生成毫秒级时间戳字符串
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func GenerateTimestampMillis() string {
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return fmt.Sprintf("%d", time.Now().UnixMilli())
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}
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// SM4Encrypt SM4-CBC模式加密
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// 使用随机IV，IV拼在密文前面，最终输出base64编码字符串
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func SM4Encrypt(plaintext []byte, key []byte) (string, error) {
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if len(key) != 16 {
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return "", fmt.Errorf("SM4密钥长度必须为16字节")
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}
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block, err := sm4.NewCipher(key)
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if err != nil {
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return "", fmt.Errorf("创建SM4 cipher失败: %v", err)
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}
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padded := pkcs7Padding(plaintext, block.BlockSize())
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iv := make([]byte, block.BlockSize())
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if _, err := io.ReadFull(rand.Reader, iv); err != nil {
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return "", fmt.Errorf("生成IV失败: %v", err)
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}
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mode := cipher.NewCBCEncrypter(block, iv)
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ciphertext := make([]byte, len(padded))
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mode.CryptBlocks(ciphertext, padded)
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result := append(iv, ciphertext...)
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return base64.StdEncoding.EncodeToString(result), nil
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}
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// SM4Decrypt SM4-CBC模式解密
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// 输入为base64编码字符串，前16字节为IV，后续为密文
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func SM4Decrypt(encryptedData string, key []byte) ([]byte, error) {
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if len(key) != 16 {
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return nil, fmt.Errorf("SM4密钥长度必须为16字节")
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}
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data, err := base64.StdEncoding.DecodeString(encryptedData)
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if err != nil {
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return nil, fmt.Errorf("base64解码失败: %v", err)
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}
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block, err := sm4.NewCipher(key)
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if err != nil {
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return nil, fmt.Errorf("创建SM4 cipher失败: %v", err)
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}
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blockSize := block.BlockSize()
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if len(data) < blockSize {
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return nil, fmt.Errorf("数据长度不足")
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}
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iv := data[:blockSize]
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ciphertext := data[blockSize:]
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mode := cipher.NewCBCDecrypter(block, iv)
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plaintext := make([]byte, len(ciphertext))
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mode.CryptBlocks(plaintext, ciphertext)
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plaintext, err = pkcs7UnPadding(plaintext)
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if err != nil {
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return nil, fmt.Errorf("去除填充失败: %v", err)
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}
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return plaintext, nil
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}
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// GenerateSign 生成签名
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// 签名规则：将毫秒级时间戳timestamp字符串与encryptedData字符串直接拼接，
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// 使用HMAC-SM3算法结合预先约定的SM3 salt进行加密，输出十六进制字符串
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func GenerateSign(timestamp string, encryptedData string, sm3Salt []byte) string {
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data := timestamp + encryptedData
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mac := hmac.New(sm3.New, sm3Salt)
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mac.Write([]byte(data))
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return hex.EncodeToString(mac.Sum(nil))
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}
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// pkcs7Padding PKCS7填充
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func pkcs7Padding(data []byte, blockSize int) []byte {
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padding := blockSize - len(data)%blockSize
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padText := bytes.Repeat([]byte{byte(padding)}, padding)
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return append(data, padText...)
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}
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// pkcs7UnPadding 去除PKCS7填充
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func pkcs7UnPadding(data []byte) ([]byte, error) {
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length := len(data)
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if length == 0 {
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return nil, fmt.Errorf("数据为空")
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}
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padding := int(data[length-1])
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if padding > length || padding == 0 {
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return nil, fmt.Errorf("无效的填充")
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}
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for i := length - padding; i < length; i++ {
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if data[i] != byte(padding) {
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return nil, fmt.Errorf("无效的填充")
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}
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}
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return data[:length-padding], nil
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}
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```
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// File: xy_sh/client.go
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```go
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package xy_sh
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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)
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// Client 供应商接口客户端
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type Client struct {
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httpClient *http.Client
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sm4Key []byte // SM4加密密钥，16字节
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sm3Salt []byte // SM3签名盐值
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orderURL string // 下单接口地址
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queryURL string // 查询接口地址
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rechargeURL string // 微信立减金充值接口地址
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}
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// NewClient 创建新的客户端
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// - sm4Key: SM4加密密钥，必须为16字节
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// - sm3Salt: SM3签名盐值
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// - orderURL: 下单接口地址
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// - queryURL: 查询接口地址
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// - rechargeURL: 微信立减金充值接口地址
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func NewClient(sm4Key []byte, sm3Salt []byte, orderURL, queryURL, rechargeURL string) (*Client, error) {
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if len(sm4Key) != 16 {
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return nil, fmt.Errorf("SM4密钥长度必须为16字节")
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}
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if len(sm3Salt) == 0 {
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return nil, fmt.Errorf("SM3盐值不能为空")
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}
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return &Client{
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httpClient: &http.Client{},
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sm4Key: sm4Key,
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sm3Salt: sm3Salt,
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orderURL: orderURL,
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queryURL: queryURL,
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rechargeURL: rechargeURL,
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}, nil
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}
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// SetHTTPClient 设置自定义HTTP客户端
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func (c *Client) SetHTTPClient(httpClient *http.Client) {
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c.httpClient = httpClient
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}
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// doRequest 执行加密请求并解密响应
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func (c *Client) doRequest(ctx context.Context, url string, bizReq interface{}) (*RawResponse, error) {
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// 1. 序列化业务参数为JSON
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bizBody, err := json.Marshal(bizReq)
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if err != nil {
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return nil, fmt.Errorf("序列化业务参数失败: %v", err)
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}
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// 2. SM4加密业务参数
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encryptedData, err := SM4Encrypt(bizBody, c.sm4Key)
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if err != nil {
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return nil, fmt.Errorf("SM4加密失败: %v", err)
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}
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// 3. 生成时间戳和签名
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timestamp := GenerateTimestampMillis()
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sign := GenerateSign(timestamp, encryptedData, c.sm3Salt)
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// 4. 构建加密请求体
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reqBody := EncryptedRequest{EncryptedData: encryptedData}
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reqBytes, err := json.Marshal(reqBody)
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if err != nil {
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return nil, fmt.Errorf("序列化请求体失败: %v", err)
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}
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// 5. 创建HTTP请求
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(reqBytes))
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if err != nil {
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return nil, fmt.Errorf("创建HTTP请求失败: %v", err)
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("timestamp", timestamp)
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req.Header.Set("sign", sign)
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// 6. 发送请求
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resp, err := c.httpClient.Do(req)
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if err != nil {
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return nil, fmt.Errorf("发送HTTP请求失败: %v", err)
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}
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defer resp.Body.Close()
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// 7. 读取响应体
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respBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("读取响应体失败: %v", err)
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}
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// 8. 解析原始响应
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var rawResp RawResponse
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if err := json.Unmarshal(respBytes, &rawResp); err != nil {
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return nil, fmt.Errorf("解析响应JSON失败: %v", err)
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}
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return &rawResp, nil
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}
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// decryptData 解密响应中的data字段
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func (c *Client) decryptData(encryptedData string, target interface{}) error {
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if encryptedData == "" {
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return nil
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}
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plaintext, err := SM4Decrypt(encryptedData, c.sm4Key)
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if err != nil {
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return fmt.Errorf("SM4解密失败: %v", err)
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}
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if err := json.Unmarshal(plaintext, target); err != nil {
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return fmt.Errorf("解析解密后数据失败: %v", err)
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}
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return nil
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}
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// Order 卡券/直充权益下单
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// 适用于卡密、直充商品下单
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func (c *Client) Order(ctx context.Context, req *OrderRequest) (*OrderResponse, error) {
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rawResp, err := c.doRequest(ctx, c.orderURL, req)
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if err != nil {
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return nil, err
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}
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resp := &OrderResponse{
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Code: rawResp.Code,
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Msg: rawResp.Msg,
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}
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if rawResp.Data != "" {
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var data OrderData
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if err := c.decryptData(rawResp.Data, &data); err != nil {
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return nil, err
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}
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resp.Data = &data
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}
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return resp, nil
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}
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// QueryOrder 卡券/直充/微信立减金订单查询
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// 通过供应商订单号查询订单状态
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func (c *Client) QueryOrder(ctx context.Context, req *QueryRequest) (*QueryResponse, error) {
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rawResp, err := c.doRequest(ctx, c.queryURL, req)
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if err != nil {
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return nil, err
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}
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resp := &QueryResponse{
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Code: rawResp.Code,
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Msg: rawResp.Msg,
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}
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if rawResp.Data != "" {
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var data QueryData
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if err := c.decryptData(rawResp.Data, &data); err != nil {
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return nil, err
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}
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resp.Data = &data
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}
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return resp, nil
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}
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// WechatRecharge 微信立减金订单充值
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func (c *Client) WechatRecharge(ctx context.Context, req *WechatRechargeRequest) (*WechatRechargeResponse, error) {
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rawResp, err := c.doRequest(ctx, c.rechargeURL, req)
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if err != nil {
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return nil, err
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}
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resp := &WechatRechargeResponse{
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Code: rawResp.Code,
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Msg: rawResp.Msg,
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}
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if rawResp.Data != "" {
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var data WechatRechargeData
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if err := c.decryptData(rawResp.Data, &data); err != nil {
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return nil, err
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}
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resp.Data = &data
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}
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return resp, nil
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}
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// SendCallback 发送回调通知（供应商调用行方回调接口）
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// 返回的 CallbackResponse 中 StatusCode 为 HTTP 状态码，Body 为响应体内容
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func (c *Client) SendCallback(ctx context.Context, callbackURL string, req *CallbackRequest) (*CallbackResponse, error) {
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// 1. 序列化业务参数
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bizBody, err := json.Marshal(req)
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if err != nil {
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return nil, fmt.Errorf("序列化回调参数失败: %v", err)
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}
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// 2. SM4加密
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encryptedData, err := SM4Encrypt(bizBody, c.sm4Key)
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if err != nil {
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return nil, fmt.Errorf("SM4加密失败: %v", err)
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}
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// 3. 生成时间戳和签名
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timestamp := GenerateTimestampMillis()
|
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sign := GenerateSign(timestamp, encryptedData, c.sm3Salt)
|
||
|
||
// 4. 构建请求体
|
||
reqBody := EncryptedRequest{EncryptedData: encryptedData}
|
||
reqBytes, err := json.Marshal(reqBody)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("序列化请求体失败: %v", err)
|
||
}
|
||
|
||
// 5. 创建HTTP请求
|
||
httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, callbackURL, bytes.NewReader(reqBytes))
|
||
if err != nil {
|
||
return nil, fmt.Errorf("创建HTTP请求失败: %v", err)
|
||
}
|
||
httpReq.Header.Set("Content-Type", "application/json")
|
||
httpReq.Header.Set("timestamp", timestamp)
|
||
httpReq.Header.Set("sign", sign)
|
||
|
||
// 6. 发送请求
|
||
resp, err := c.httpClient.Do(httpReq)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("发送回调请求失败: %v", err)
|
||
}
|
||
defer resp.Body.Close()
|
||
|
||
// 7. 读取响应体
|
||
respBytes, err := io.ReadAll(resp.Body)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("读取回调响应失败: %v", err)
|
||
}
|
||
|
||
return &CallbackResponse{
|
||
StatusCode: resp.StatusCode,
|
||
Body: string(respBytes),
|
||
}, nil
|
||
}
|
||
```
|
||
|
||
// File: xy_sh/example_test.go
|
||
```go
|
||
package xy_sh
|
||
|
||
import (
|
||
"context"
|
||
"fmt"
|
||
"log"
|
||
)
|
||
|
||
func ExampleClient_Order() {
|
||
// 初始化客户端
|
||
sm4Key := []byte("1234567890abcdef") // 16字节SM4密钥
|
||
sm3Salt := []byte("my_sm3_salt") // SM3盐值
|
||
orderURL := "https://api.example.com/order"
|
||
queryURL := "https://api.example.com/query"
|
||
rechargeURL := "https://api.example.com/recharge"
|
||
|
||
client, err := NewClient(sm4Key, sm3Salt, orderURL, queryURL, rechargeURL)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
// 下单
|
||
req := &OrderRequest{
|
||
ActCode: "ACT001",
|
||
GoodsCode: "123456",
|
||
ActOrderNum: "00001",
|
||
Account: "19912345678",
|
||
CallbackUrl: "https://xxx/notice",
|
||
}
|
||
|
||
resp, err := client.Order(context.Background(), req)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
fmt.Printf("code: %d, msg: %s\n", resp.Code, resp.Msg)
|
||
if resp.Data != nil {
|
||
fmt.Printf("orderNo: %s, status: %d\n", resp.Data.OrderNo, resp.Data.Status)
|
||
}
|
||
}
|
||
|
||
func ExampleClient_QueryOrder() {
|
||
sm4Key := []byte("1234567890abcdef")
|
||
sm3Salt := []byte("my_sm3_salt")
|
||
|
||
client, err := NewClient(sm4Key, sm3Salt, "https://api.example.com/order", "https://api.example.com/query", "https://api.example.com/recharge")
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
req := &QueryRequest{
|
||
ActCode: "FBG6vdYqGE4mGX7EH/woEg==",
|
||
OrderNo: "HM1757046717684000102707339840b23222",
|
||
}
|
||
|
||
resp, err := client.QueryOrder(context.Background(), req)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
fmt.Printf("code: %d, msg: %s\n", resp.Code, resp.Msg)
|
||
if resp.Data != nil {
|
||
fmt.Printf("orderNo: %s, status: %d\n", resp.Data.OrderNo, resp.Data.Status)
|
||
}
|
||
}
|
||
|
||
func ExampleClient_WechatRecharge() {
|
||
sm4Key := []byte("1234567890abcdef")
|
||
sm3Salt := []byte("my_sm3_salt")
|
||
|
||
client, err := NewClient(sm4Key, sm3Salt, "https://api.example.com/order", "https://api.example.com/query", "https://api.example.com/recharge")
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
req := &WechatRechargeRequest{
|
||
ActCode: "FBG6vdYqGE4mGX7EH/woEg==",
|
||
GoodsCode: "0001",
|
||
ActOrderNum: "0001",
|
||
OpenId: "0001",
|
||
AppId: "00001",
|
||
}
|
||
|
||
resp, err := client.WechatRecharge(context.Background(), req)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
fmt.Printf("code: %d, msg: %s\n", resp.Code, resp.Msg)
|
||
if resp.Data != nil {
|
||
fmt.Printf("orderNo: %s, status: %d, couponId: %s\n", resp.Data.OrderNo, resp.Data.Status, resp.Data.CouponId)
|
||
}
|
||
}
|
||
|
||
func ExampleClient_SendCallback() {
|
||
sm4Key := []byte("1234567890abcdef")
|
||
sm3Salt := []byte("my_sm3_salt")
|
||
|
||
client, err := NewClient(sm4Key, sm3Salt, "https://api.example.com/order", "https://api.example.com/query", "https://api.example.com/recharge")
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
req := &CallbackRequest{
|
||
OrderNo: "HM202509291010001",
|
||
ActOrderNum: "XY2025092910100001",
|
||
Status: 3,
|
||
Account: "19912345678",
|
||
}
|
||
|
||
resp, err := client.SendCallback(context.Background(), "https://bank.example.com/callback", req)
|
||
if err != nil {
|
||
log.Fatal(err)
|
||
}
|
||
|
||
fmt.Printf("statusCode: %d, body: %s\n", resp.StatusCode, resp.Body)
|
||
}
|
||
``` |