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86 lines
2.0 KiB
86 lines
2.0 KiB
package kashangwl
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import (
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"bytes"
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"crypto/md5"
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"encoding/hex"
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"encoding/json"
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"github.com/bitly/go-simplejson"
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"github.com/dtapps/go-library/utils/goparams"
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"io"
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"io/ioutil"
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"net/http"
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"sort"
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"strings"
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"time"
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)
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const api = "http://www.kashangwl.com/api/"
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// Parameter 参数
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type Parameter map[string]interface{}
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// ParameterEncode 参数
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type ParameterEncode []string
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// KaShangWl 每次请求需传入以下参数
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type KaShangWl struct {
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CustomerId int // 商家编号
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CustomerKey string // 商家密钥
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}
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// Send 发送 http://cha.kashangwl.com/api-doc/
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func (w *KaShangWl) Send(url string, param Parameter) (*simplejson.Json, error) {
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// 处理数据
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param.setRequestData(w)
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// 请求
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resp, e := http.Post(api+url, "application/json", strings.NewReader(param.getRequestData()))
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if e != nil {
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return nil, e
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}
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defer resp.Body.Close()
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// 返回结果
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body, _ := ioutil.ReadAll(resp.Body)
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respJson, err := simplejson.NewJson(body)
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if err != nil {
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return nil, err
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}
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return respJson, nil
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}
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// md5(key + 参数1名称 + 参数1值 + 参数2名称 + 参数2值...) 加密源串应为{key}customer_id1192442order_id827669582783timestamp1626845767
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func sign(params Parameter, customerKey string) string {
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// 参数按照参数名的字典升序排列
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var keys []string
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for k := range params {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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// 拼接
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query := bytes.NewBufferString(customerKey)
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for _, k := range keys {
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query.WriteString(k)
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query.WriteString(goparams.GetParamsString(params[k]))
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}
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// MD5加密
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h := md5.New()
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io.Copy(h, query)
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return strings.ToLower(hex.EncodeToString(h.Sum(nil)))
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}
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// 设置请求数据
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func (p Parameter) setRequestData(w *KaShangWl) {
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// 当前时间戳（单位：秒）
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timestamp := time.Now().UnixNano() / 1e6
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p["timestamp"] = timestamp
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p["customer_id"] = w.CustomerId
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// 设置签名
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p["sign"] = sign(p, w.CustomerKey)
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}
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// 获取请求数据
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func (p Parameter) getRequestData() string {
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j, _ := json.Marshal(p)
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return string(j)
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}
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