997 lines
36 KiB
Markdown
997 lines
36 KiB
Markdown
。
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现在我来生成所有 6 个文件。
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根据文档分析：
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1. SM4-CBC 加密（带IV，IV拼在密文前面）
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2. SM3 with salt 签名（使用 sm3WithSalt，即 HMAC-SM3）
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3. 毫秒级时间戳
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4. 请求头携带 timestamp 和 sign，请求体为 encryptedData
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注意文档中的签名规则：
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- 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SM3算法结合预先约定的SM3 salt进行加密
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- 最终输出十六进制字符串作为sign值
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Java示例：`SmUtil.sm3WithSalt(sm3Salt.getBytes()).digestHex(timestamp+encryptedData)`
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这里的 sm3WithSalt 实际上是 HMAC-SM3，salt 作为 key。
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现在生成所有文件。
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// File: xy_sh/go.mod
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```go
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module xy_sh
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go 1.21
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require github.com/tjfoc/gmsm v1.4.1
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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
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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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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 判断是否成功
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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/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 下单请求业务参数
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type OrderRequest struct {
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ActCode string `json:"actCode"`
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GoodsCode string `json:"goodsCode"`
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ActOrderNum string `json:"actOrderNum"`
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Account string `json:"account,omitempty"`
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CallbackUrl string `json:"callbackUrl,omitempty"`
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}
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// OrderResponse 下单响应
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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"`
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}
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// OrderData 下单响应解密后数据
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type OrderData struct {
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OrderNo string `json:"orderNo"`
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CouponNo string `json:"couponNo,omitempty"`
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CouponCode string `json:"couponCode,omitempty"`
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Status int `json:"status"`
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ExpireTime string `json:"expireTime,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 查询请求业务参数
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type QueryRequest struct {
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ActCode string `json:"actCode"`
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OrderNo string `json:"orderNo"`
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}
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// QueryResponse 查询响应
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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"`
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}
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// QueryData 查询响应解密后数据
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type QueryData struct {
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OrderNo string `json:"orderNo"`
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Status int `json:"status"`
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Account string `json:"account,omitempty"`
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CardInfo *CardInfo `json:"cardInfo,omitempty"`
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CouponId string `json:"couponId,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"`
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CouponCode string `json:"couponCode"`
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ExpireTime string `json:"expireTime"`
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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 微信立减金充值请求业务参数
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type WechatRechargeRequest struct {
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ActCode string `json:"actCode"`
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OrderNo string `json:"orderNo"`
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GoodsCode string `json:"goodsCode"`
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ActOrderNum string `json:"actOrderNum"`
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AppId string `json:"appId"`
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OpenId string `json:"openId"`
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CallbackUrl string `json:"callbackUrl,omitempty"`
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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"`
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}
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// WechatRechargeData 微信立减金充值响应解密后数据
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type WechatRechargeData struct {
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OrderNo string `json:"orderNo"`
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Status int `json:"status"`
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CouponId string `json:"couponId,omitempty"`
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}
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// ===== 接口4：回调通知接口 =====
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// CallbackRequest 回调通知请求业务参数
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type CallbackRequest struct {
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OrderNo string `json:"orderNo"`
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ActOrderNum string `json:"actOrderNum"`
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Status int `json:"status"`
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Account string `json:"account,omitempty"`
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CardInfo *CardInfo `json:"cardInfo,omitempty"`
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CouponId string `json:"couponId,omitempty"`
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}
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// CallbackResponse 回调通知响应
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type CallbackResponse struct {
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StatusCode int
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Body string
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}
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// ===== 通用加密请求/响应结构 =====
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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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// EncryptedResponse 加密响应体
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type EncryptedResponse struct {
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Code int `json:"code"`
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Msg string `json:"msg"`
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Data json.RawMessage `json:"data"`
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}
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```
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Wait, I need to import encoding/json in types.go for json.RawMessage. Let me fix that.
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Actually, let me reconsider the structure. The EncryptedResponse should have Data as a string (since it's an encrypted JSON string), and then we decrypt it. Let me look at the response format again:
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```json
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{
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"code": 0,
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"msg": "请求成功",
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"data": "{\"orderNo\":\"HM17575805323790000127073398f3772c00\",...}"
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}
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```
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So `data` is a JSON string (encrypted), not an object. So it should be `string` type.
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Let me regenerate all files properly.
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// 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 下单请求业务参数
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type OrderRequest struct {
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ActCode string `json:"actCode"`
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GoodsCode string `json:"goodsCode"`
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ActOrderNum string `json:"actOrderNum"`
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Account string `json:"account,omitempty"`
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CallbackUrl string `json:"callbackUrl,omitempty"`
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}
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// OrderResponse 下单响应
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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"`
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}
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// OrderData 下单响应解密后数据
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type OrderData struct {
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OrderNo string `json:"orderNo"`
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CouponNo string `json:"couponNo,omitempty"`
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CouponCode string `json:"couponCode,omitempty"`
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Status int `json:"status"`
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ExpireTime string `json:"expireTime,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 查询请求业务参数
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type QueryRequest struct {
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ActCode string `json:"actCode"`
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OrderNo string `json:"orderNo"`
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}
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// QueryResponse 查询响应
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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"`
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}
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// QueryData 查询响应解密后数据
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type QueryData struct {
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OrderNo string `json:"orderNo"`
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Status int `json:"status"`
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Account string `json:"account,omitempty"`
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CardInfo *CardInfo `json:"cardInfo,omitempty"`
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CouponId string `json:"couponId,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"`
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CouponCode string `json:"couponCode"`
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ExpireTime string `json:"expireTime"`
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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 微信立减金充值请求业务参数
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type WechatRechargeRequest struct {
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ActCode string `json:"actCode"`
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OrderNo string `json:"orderNo"`
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GoodsCode string `json:"goodsCode"`
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ActOrderNum string `json:"actOrderNum"`
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AppId string `json:"appId"`
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OpenId string `json:"openId"`
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CallbackUrl string `json:"callbackUrl,omitempty"`
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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"`
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}
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// WechatRechargeData 微信立减金充值响应解密后数据
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type WechatRechargeData struct {
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OrderNo string `json:"orderNo"`
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Status int `json:"status"`
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CouponId string `json:"couponId,omitempty"`
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}
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// ===== 接口4：回调通知接口 =====
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// CallbackRequest 回调通知请求业务参数
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type CallbackRequest struct {
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OrderNo string `json:"orderNo"`
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ActOrderNum string `json:"actOrderNum"`
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Status int `json:"status"`
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Account string `json:"account,omitempty"`
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CardInfo *CardInfo `json:"cardInfo,omitempty"`
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CouponId string `json:"couponId,omitempty"`
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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"` // 加密后的JSON字符串
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}
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```
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Now let me write the crypto.go file with the SM4 and SM3 implementations adapted for this SDK.
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For the SM3 with salt, the Java code `SmUtil.sm3WithSalt(sm3Salt.getBytes()).digestHex(timestamp+encryptedData)` is essentially HMAC-SM3 where the salt is the key. So I'll use HMAC-SM3.
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For SM4-CBC encryption, the encrypted data includes IV prepended to the ciphertext, encoded in base64.
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Let me write all files now.
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Actually, looking at the response format more carefully:
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```json
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{
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"code": 0,
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"msg": "请求成功",
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"data": "{\"orderNo\":\"HM17575805323790000127073398f3772c00\",...}"
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}
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```
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The `data` field is a JSON string (the encrypted data). So when we receive the response, we first parse the outer JSON to get `code`, `msg`, and `data` (as string), then decrypt `data` to get the inner JSON.
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Let me structure this properly.
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Now let me write all 6 files:
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1. go.mod
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2. errors.go
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3. types.go
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4. crypto.go
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5. client.go
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6. example_test.go
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Let me write them all now.</think>现在我来生成所有 6 个文件。
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// File: xy_sh/go.mod
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```go
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module xy_sh
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go 1.21
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require github.com/tjfoc/gmsm v1.4.1
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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/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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// ===== 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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// 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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// ===== 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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// ===== 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/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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|
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block, err := sm4.NewCipher(key)
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if err != nil {
|
||
return "", fmt.Errorf("创建SM4 cipher失败: %v", err)
|
||
}
|
||
|
||
padded := pkcs7Padding(plaintext, block.BlockSize())
|
||
|
||
iv := make([]byte, block.BlockSize())
|
||
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
|
||
return "", fmt.Errorf("生成IV失败: %v", err)
|
||
}
|
||
|
||
mode := cipher.NewCBCEncrypter(block, iv)
|
||
ciphertext := make([]byte, len(padded))
|
||
mode.CryptBlocks(ciphertext, padded)
|
||
|
||
result := append(iv, ciphertext...)
|
||
return base64.StdEncoding.EncodeToString(result), nil
|
||
}
|
||
|
||
// SM4Decrypt SM4-CBC模式解密
|
||
// 输入为base64编码字符串，前16字节为IV，后续为密文
|
||
func SM4Decrypt(encryptedData string, key []byte) ([]byte, error) {
|
||
if len(key) != 16 {
|
||
return nil, fmt.Errorf("SM4密钥长度必须为16字节")
|
||
}
|
||
|
||
data, err := base64.StdEncoding.DecodeString(encryptedData)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("base64解码失败: %v", err)
|
||
}
|
||
|
||
block, err := sm4.NewCipher(key)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("创建SM4 cipher失败: %v", err)
|
||
}
|
||
|
||
blockSize := block.BlockSize()
|
||
if len(data) < blockSize {
|
||
return nil, fmt.Errorf("数据长度不足")
|
||
}
|
||
iv := data[:blockSize]
|
||
ciphertext := data[blockSize:]
|
||
|
||
mode := cipher.NewCBCDecrypter(block, iv)
|
||
plaintext := make([]byte, len(ciphertext))
|
||
mode.CryptBlocks(plaintext, ciphertext)
|
||
|
||
plaintext, err = pkcs7UnPadding(plaintext)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("去除填充失败: %v", err)
|
||
}
|
||
|
||
return plaintext, nil
|
||
}
|
||
|
||
// GenerateSign 生成签名
|
||
// 签名规则：将毫秒级时间戳timestamp字符串与encryptedData字符串直接拼接，
|
||
// 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
|
||
func GenerateSign(timestamp string, encryptedData string, sm3Salt []byte) string {
|
||
data := timestamp + encryptedData
|
||
mac := hmac.New(sm3.New, sm3Salt)
|
||
mac.Write([]byte(data))
|
||
return hex.EncodeToString(mac.Sum(nil))
|
||
}
|
||
|
||
// pkcs7Padding PKCS7填充
|
||
func pkcs7Padding(data []byte, blockSize int) []byte {
|
||
padding := blockSize - len(data)%blockSize
|
||
padText := bytes.Repeat([]byte{byte(padding)}, padding)
|
||
return append(data, padText...)
|
||
}
|
||
|
||
// pkcs7UnPadding 去除PKCS7填充
|
||
func pkcs7UnPadding(data []byte) ([]byte, error) {
|
||
length := len(data)
|
||
if length == 0 {
|
||
return nil, fmt.Errorf("数据为空")
|
||
}
|
||
padding := int(data[length-1])
|
||
if padding > length || padding == 0 {
|
||
return nil, fmt.Errorf("无效的填充")
|
||
}
|
||
for i := length - padding; i < length; i++ {
|
||
if data[i] != byte(padding) {
|
||
return nil, fmt.Errorf("无效的填充")
|
||
}
|
||
}
|
||
return data[:length-padding], nil
|
||
}
|
||
```
|
||
|
||
// File: xy_sh/client.go
|
||
```go
|
||
package xy_sh
|
||
|
||
import (
|
||
"bytes"
|
||
"context"
|
||
"encoding/json"
|
||
"fmt"
|
||
"io"
|
||
"net/http"
|
||
)
|
||
|
||
// Client 供应商接口客户端
|
||
type Client struct {
|
||
httpClient *http.Client
|
||
sm4Key []byte // SM4加密密钥，16字节
|
||
sm3Salt []byte // SM3签名盐值
|
||
orderURL string // 下单接口地址
|
||
queryURL string // 查询接口地址
|
||
rechargeURL string // 微信立减金充值接口地址
|
||
}
|
||
|
||
// NewClient 创建新的客户端
|
||
// - sm4Key: SM4加密密钥，必须为16字节
|
||
// - sm3Salt: SM3签名盐值
|
||
// - orderURL: 下单接口地址
|
||
// - queryURL: 查询接口地址
|
||
// - rechargeURL: 微信立减金充值接口地址
|
||
func NewClient(sm4Key []byte, sm3Salt []byte, orderURL, queryURL, rechargeURL string) (*Client, error) {
|
||
if len(sm4Key) != 16 {
|
||
return nil, fmt.Errorf("SM4密钥长度必须为16字节")
|
||
}
|
||
if len(sm3Salt) == 0 {
|
||
return nil, fmt.Errorf("SM3盐值不能为空")
|
||
}
|
||
return &Client{
|
||
httpClient: &http.Client{},
|
||
sm4Key: sm4Key,
|
||
sm3Salt: sm3Salt,
|
||
orderURL: orderURL,
|
||
queryURL: queryURL,
|
||
rechargeURL: rechargeURL,
|
||
}, nil
|
||
}
|
||
|
||
// SetHTTPClient 设置自定义HTTP客户端
|
||
func (c *Client) SetHTTPClient(httpClient *http.Client) {
|
||
c.httpClient = httpClient
|
||
}
|
||
|
||
// doRequest 执行加密请求并解密响应
|
||
func (c *Client) doRequest(ctx context.Context, url string, bizReq interface{}) (*RawResponse, error) {
|
||
// 1. 序列化业务参数为JSON
|
||
bizBody, err := json.Marshal(bizReq)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("序列化业务参数失败: %v", err)
|
||
}
|
||
|
||
// 2. SM4加密业务参数
|
||
encryptedData, err := SM4Encrypt(bizBody, c.sm4Key)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("SM4加密失败: %v", err)
|
||
}
|
||
|
||
// 3. 生成时间戳和签名
|
||
timestamp := GenerateTimestampMillis()
|
||
sign := GenerateSign(timestamp, encryptedData, c.sm3Salt)
|
||
|
||
// 4. 构建加密请求体
|
||
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
|
||
req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(reqBytes))
|
||
if err != nil {
|
||
return nil, fmt.Errorf("创建HTTP请求失败: %v", err)
|
||
}
|
||
req.Header.Set("Content-Type", "application/json")
|
||
req.Header.Set("timestamp", timestamp)
|
||
req.Header.Set("sign", sign)
|
||
|
||
// 6. 发送请求
|
||
resp, err := c.httpClient.Do(req)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("发送HTTP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("读取响应体失败: %v", err)
|
||
}
|
||
|
||
// 8. 解析原始响应
|
||
var rawResp RawResponse
|
||
if err := json.Unmarshal(respBytes, &rawResp); err != nil {
|
||
return nil, fmt.Errorf("解析响应JSON失败: %v", err)
|
||
}
|
||
|
||
return &rawResp, nil
|
||
}
|
||
|
||
// decryptData 解密响应中的data字段
|
||
func (c *Client) decryptData(encryptedData string, target interface{}) error {
|
||
if encryptedData == "" {
|
||
return nil
|
||
}
|
||
plaintext, err := SM4Decrypt(encryptedData, c.sm4Key)
|
||
if err != nil {
|
||
return fmt.Errorf("SM4解密失败: %v", err)
|
||
}
|
||
if err := json.Unmarshal(plaintext, target); err != nil {
|
||
return fmt.Errorf("解析解密后数据失败: %v", err)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// Order 卡券/直充权益下单
|
||
// 适用于卡密、直充商品下单
|
||
func (c *Client) Order(ctx context.Context, req *OrderRequest) (*OrderResponse, error) {
|
||
rawResp, err := c.doRequest(ctx, c.orderURL, req)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
resp := &OrderResponse{
|
||
Code: rawResp.Code,
|
||
Msg: rawResp.Msg,
|
||
}
|
||
|
||
if rawResp.Data != "" {
|
||
var data OrderData
|
||
if err := c.decryptData(rawResp.Data, &data); err != nil {
|
||
return nil, err
|
||
}
|
||
resp.Data = &data
|
||
}
|
||
|
||
return resp, nil
|
||
}
|
||
|
||
// QueryOrder 卡券/直充/微信立减金订单查询
|
||
// 通过供应商订单号查询订单状态
|
||
func (c *Client) QueryOrder(ctx context.Context, req *QueryRequest) (*QueryResponse, error) {
|
||
rawResp, err := c.doRequest(ctx, c.queryURL, req)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
resp := &QueryResponse{
|
||
Code: rawResp.Code,
|
||
Msg: rawResp.Msg,
|
||
}
|
||
|
||
if rawResp.Data != "" {
|
||
var data QueryData
|
||
if err := c.decryptData(rawResp.Data, &data); err != nil {
|
||
return nil, err
|
||
}
|
||
resp.Data = &data
|
||
}
|
||
|
||
return resp, nil
|
||
}
|
||
|
||
// WechatRecharge 微信立减金订单充值
|
||
func (c *Client) WechatRecharge(ctx context.Context, req *WechatRechargeRequest) (*WechatRechargeResponse, error) {
|
||
rawResp, err := c.doRequest(ctx, c.rechargeURL, req)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
resp := &WechatRechargeResponse{
|
||
Code: rawResp.Code,
|
||
Msg: rawResp.Msg,
|
||
}
|
||
|
||
if rawResp.Data != "" {
|
||
var data WechatRechargeData
|
||
if err := c.decryptData(rawResp.Data, &data); err != nil {
|
||
return nil, err
|
||
}
|
||
resp.Data = &data
|
||
}
|
||
|
||
return resp, nil
|
||
}
|
||
|
||
// SendCallback 发送回调通知（供应商调用行方回调接口）
|
||
// 返回的 CallbackResponse 中 StatusCode 为 HTTP 状态码，Body 为响应体内容
|
||
func (c *Client) SendCallback(ctx context.Context, callbackURL string, req *CallbackRequest) (*CallbackResponse, error) {
|
||
// 1. 序列化业务参数
|
||
bizBody, err := json.Marshal(req)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("序列化回调参数失败: %v", err)
|
||
}
|
||
|
||
// 2. SM4加密
|
||
encryptedData, err := SM4Encrypt(bizBody, c.sm4Key)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("SM4加密失败: %v", err)
|
||
}
|
||
|
||
// 3. 生成时间戳和签名
|
||
timestamp := GenerateTimestampMillis()
|
||
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)
|
||
}
|
||
```
|
||
|
||
=== SDK 生成完成 ===
|
||
|
||
## 加密实现
|
||
|
||
以下是从加密工具获取的完整实现：
|
||
|
||
### 加密实现 1
|
||
|
||
{
|
||
"success": true,
|
||
"data": "\n### 参数拼接规范\n\n**常见拼接方式**：\n\n1. **字典序排序**：按key字典序排序后拼接 `key=value\u0026key2=value2`\n2. **固定顺序**：按文档指定顺序拼接\n3. **JSON字符串**：整个请求体作为签名串\n\n**代码模板**：\n\n```go\npackage crypto\n\nimport (\n \"fmt\"\n \"sort\"\n \"strings\"\n)\n\n// BuildSignString 方式1：字典序排序拼接\nfunc BuildSignString(params map[string]string) string {\n keys := make([]string, 0, len(params))\n for k, v := range params {\n if v != \"\" \u0026\u0026 k != \"sign\" \u0026\u0026 k != \"signature\" {\n keys = append(keys, k)\n }\n }\n sort.Strings(keys)\n \n var parts []string\n for _, k := range keys {\n parts = append(parts, fmt.Sprintf(\"%s=%s\", k, params[k]))\n }\n return strings.Join(parts, \"\u0026\")\n}\n\n// BuildSignStringOrdered 方式2：固定顺序拼接\nfunc BuildSignStringOrdered(params map[string]string, orderedKeys []string) string {\n var parts []string\n for _, k := range orderedKeys {\n if v, ok := params[k]; ok \u0026\u0026 v != \"\" {\n parts = append(parts, fmt.Sprintf(\"%s=%s\", k, v))\n }\n }\n return strings.Join(parts, \"\u0026\")\n}\n```\n\n**注意事项**：\n- 确认文档指定的排序规则（字典序/固定顺序）\n- 确认空值是否要包含（通常排除空值）\n- 确认是否需要URL编码\n- 注意排除签名字段本身\n",
|
||
"tool": "param_concat"
|
||
}
|
||
|
||
### 加密实现 2
|
||
|
||
{
|
||
"success": true,
|
||
"data": "\n### 时间戳和随机数生成规范\n\n**代码模板**：\n\n```go\npackage crypto\n\nimport (\n \"crypto/rand\"\n \"fmt\"\n \"math/big\"\n \"time\"\n)\n\n// GenerateTimestamp 生成秒级时间戳\nfunc GenerateTimestamp() string {\n return fmt.Sprintf(\"%d\", time.Now().Unix())\n}\n\n// GenerateTimestampMillis 生成毫秒级时间戳\nfunc GenerateTimestampMillis() string {\n return fmt.Sprintf(\"%d\", time.Now().UnixMilli())\n}\n\n// GenerateNonce 生成指定长度的随机字符串（加密安全）\nfunc GenerateNonce(length int) (string, error) {\n const charset = \"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789\"\n b := make([]byte, length)\n for i := range b {\n num, err := rand.Int(rand.Reader, big.NewInt(int64(len(charset))))\n if err != nil {\n return \"\", err\n }\n b[i] = charset[num.Int64()]\n }\n return string(b), nil\n}\n```\n\n**注意事项**：\n- 确认文档要求的是秒级还是毫秒级时间戳\n- 确认nonce的长度要求（通常16-32位）\n- 生产环境建议使用加密安全的随机数生成器\n",
|
||
"tool": "nonce_timestamp"
|
||
}
|
||
|
||
### 加密实现 3
|
||
|
||
{
|
||
"success": true,
|
||
"data": "\n### SM4-CBC 国密对称加密完整实现指南\n\n**⚠️ 重要：必须使用第三方库，不要自己实现 SM4 算法！**\n**推荐使用：github.com/tjfoc/gmsm**\n\n**前置要求**：\n```bash\ngo get github.com/tjfoc/gmsm\n```\n\n**配置参数**：\n- 编码方式: base64\n\n**完整代码模板（请直接复制使用）**：\n\n```go\npackage crypto\n\nimport (\n \"crypto/cipher\"\n \"crypto/rand\"\n \"encoding/base64\"\n \"encoding/hex\"\n \"fmt\"\n \"io\"\n \"bytes\"\n\n \"github.com/tjfoc/gmsm/sm4\" // ⚠️ 必须使用此库，不要自己实现SM4\n)\n\n// SM4CBCEncrypt SM4-CBC模式加密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4CBCEncrypt(plaintext []byte, key []byte) (string, error) {\n if len(key) != 16 {\n return \"\", fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n // 使用 gmsm 库创建 SM4 cipher\n block, err := sm4.NewCipher(key)\n if err != nil {\n return \"\", fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n padded := pkcs7Padding(plaintext, block.BlockSize())\n\n iv := make([]byte, block.BlockSize())\n if _, err := io.ReadFull(rand.Reader, iv); err != nil {\n return \"\", fmt.Errorf(\"生成IV失败: %v\", err)\n }\n\n mode := cipher.NewCBCEncrypter(block, iv)\n ciphertext := make([]byte, len(padded))\n mode.CryptBlocks(ciphertext, padded)\n\n result := append(iv, ciphertext...)\n if \"base64\" == \"hex\" {\n return hex.EncodeToString(result), nil\n }\n return base64.StdEncoding.EncodeToString(result), nil\n}\n\n// SM4CBCDecrypt SM4-CBC模式解密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4CBCDecrypt(encryptedData string, key []byte) ([]byte, error) {\n if len(key) != 16 {\n return nil, fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n var data []byte\n var err error\n if \"base64\" == \"hex\" {\n data, err = hex.DecodeString(encryptedData)\n } else {\n data, err = base64.StdEncoding.DecodeString(encryptedData)\n }\n if err != nil {\n return nil, fmt.Errorf(\"解码失败: %v\", err)\n }\n\n block, err := sm4.NewCipher(key)\n if err != nil {\n return nil, fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n blockSize := block.BlockSize()\n if len(data) \u003c blockSize {\n return nil, fmt.Errorf(\"数据长度不足\")\n }\n iv := data[:blockSize]\n ciphertext := data[blockSize:]\n\n mode := cipher.NewCBCDecrypter(block, iv)\n plaintext := make([]byte, len(ciphertext))\n mode.CryptBlocks(plaintext, ciphertext)\n\n plaintext, err = pkcs7UnPadding(plaintext)\n if err != nil {\n return nil, fmt.Errorf(\"去除填充失败: %v\", err)\n }\n\n return plaintext, nil\n}\n\n// pkcs7Padding PKCS7填充\nfunc pkcs7Padding(data []byte, blockSize int) []byte {\n padding := blockSize - len(data)%blockSize\n padText := bytes.Repeat([]byte{byte(padding)}, padding)\n return append(data, padText...)\n}\n\n// pkcs7UnPadding 去除PKCS7填充\nfunc pkcs7UnPadding(data []byte) ([]byte, error) {\n length := len(data)\n if length == 0 {\n return nil, fmt.Errorf(\"数据为空\")\n }\n padding := int(data[length-1])\n if padding \u003e length || padding == 0 {\n return nil, fmt.Errorf(\"无效的填充\")\n }\n for i := length - padding; i \u003c length; i++ {\n if data[i] != byte(padding) {\n return nil, fmt.Errorf(\"无效的填充\")\n }\n }\n return data[:length-padding], nil\n}\n```\n\n**⚠️ 重要提醒**：\n1. **不要自己实现 SM4 算法**，请直接使用 github.com/tjfoc/gmsm\n2. 这个库是国密官方推荐的 Go 实现，安全可靠\n3. 在 go.mod 中添加依赖：`require github.com/tjfoc/gmsm v1.4.1`\n\n**注意事项**：\n- SM4 密钥固定为 16 字节\n- IV 必须随机生成且每次不同\n- CBC 模式需要 IV，ECB 模式不需要\n",
|
||
"tool": "sm4_cbc_encrypt"
|
||
}
|
||
|
||
### 加密实现 4
|
||
|
||
{
|
||
"success": true,
|
||
"data": "\n### SM3 国密哈希算法完整实现指南\n\n**适用场景**：文档要求使用国密 SM3 算法进行摘要计算或签名验证\n\n**前置要求**：需要安装 github.com/tjfoc/gmsm\n\n```bash\ngo get github.com/tjfoc/gmsm\n```\n\n**配置参数**：\n- 编码方式: hex\n- 包含 HMAC: true\n\n**完整代码模板**：\n\n```go\npackage crypto\n\nimport (\n \"crypto/hmac\"\n \"encoding/base64\"\n \"encoding/hex\"\n \"fmt\"\n \"os\"\n \n \"github.com/tjfoc/gmsm/sm3\"\n)\n\n// SM3Hash 计算SM3哈希值\n// data: 待哈希的数据\n// encoding: 输出编码方式 (hex/base64)\n// 返回: 编码后的哈希值\nfunc SM3Hash(data []byte, encoding string) (string, error) {\n h := sm3.New()\n h.Write(data)\n hashBytes := h.Sum(nil)\n \n if encoding == \"base64\" {\n return base64.StdEncoding.EncodeToString(hashBytes), nil\n }\n return hex.EncodeToString(hashBytes), nil\n}\n\n// SM3HashString 计算字符串的SM3哈希值（便捷方法）\nfunc SM3HashString(data string, encoding string) (string, error) {\n return SM3Hash([]byte(data), encoding)\n}\n\n// SM3HashFile 计算文件的SM3哈希值\nfunc SM3HashFile(filePath string, encoding string) (string, error) {\n data, err := os.ReadFile(filePath)\n if err != nil {\n return \"\", fmt.Errorf(\"读取文件失败: %v\", err)\n }\n return SM3Hash(data, encoding)\n}\n\n// SM3Verify 验证数据与哈希值是否匹配\nfunc SM3Verify(data []byte, hash string, encoding string) (bool, error) {\n expected, err := SM3Hash(data, encoding)\n if err != nil {\n return false, err\n }\n return expected == hash, nil\n}\n\n// HMACSM3 HMAC-SM3计算\n// 使用标准HMAC算法，底层使用SM3哈希函数\nfunc HMACSM3(data []byte, key []byte) string {\n // 使用标准HMAC，底层哈希函数用SM3\n h := hmac.New(sm3.New, key)\n h.Write(data)\n return hex.EncodeToString(h.Sum(nil))\n}\n```\n\n**使用示例**：\n```go\n// 计算字符串哈希\nhash, _ := SM3HashString(\"hello world\", \"hex\")\nfmt.Println(hash) // 输出64位十六进制字符串\n\n// 验证哈希\nvalid, _ := SM3Verify([]byte(\"hello world\"), hash, \"hex\")\nfmt.Println(valid) // true\n\n// HMAC-SM3示例\nkey := []byte(\"secret_key\")\ndata := []byte(\"hello world\")\nhmacResult := HMACSM3(data, key)\nfmt.Println(hmacResult)\n```\n\n**注意事项**：\n- SM3 输出固定 256 位（32字节）的哈希值\n- 十六进制输出为 64 位字符串\n- 常用于数字签名、完整性校验等场景\n- SM3 是国密标准哈希算法，与 SHA-256 类似\n- HMAC-SM3 需要使用标准库 crypto/hmac，底层哈希函数使用 sm3.New\n",
|
||
"tool": "sm3_hash"
|
||
}
|
||
|