* 对密文进行解密.

func Api_create_preauthcode(component_access_token string) string { if time.Now().Unix()-VerifyCache.Pre_auth_code_update >= VerifyCache.Pre_auth_code_expires_in-10 || strings.EqualFold(VerifyCache.Pre_auth_code, "") { params := map[string]string{"component_appid": OpenAppID} jd, err := json.Marshal(params) log.Println(err) fmt.Println(string(jd)) buf := bytes.NewBuffer(make([]byte, 0)) binary.Write(buf, binary.BigEndian, jd) resp, err := http.Post("https://api.weixin.qq.com/cgi-bin/component/api_create_preauthcode?component_access_token="+component_access_token, "application/json", buf) log.Println(err) b, err := ioutil.ReadAll(resp.Body) log.Println(err) fmt.Println(string(b)) var respData = &struct { Pre_auth_code string `json:"pre_auth_code"` Expires_in int64 `json:"expires_in"` }{} err = json.Unmarshal(b, respData) log.Println(err) VerifyCache.Pre_auth_code = respData.Pre_auth_code VerifyCache.Pre_auth_code_expires_in = respData.Expires_in VerifyCache.Pre_auth_code_update = time.Now().Unix() fmt.Println(respData) return VerifyCache.Pre_auth_code } else { return VerifyCache.Pre_auth_code } } */.