go http请求

func Send(notification model.Notification, defaultRobot string) (err error) {

    markdown, robotURL, err := transformer.TransformToMarkdown(notification)

    if err != nil {
       return
    }

    data, err := json.Marshal(markdown)
    if err != nil {
       return
    }

    var wechatRobotURL string

    if robotURL != "" {
       wechatRobotURL = robotURL
    } else {
       wechatRobotURL = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=" + defaultRobot
    }

    req, err := http.NewRequest(
       "POST",
       wechatRobotURL,
       bytes.NewBuffer(data))

    if err != nil {
       return
    }

    req.Header.Set("Content-Type", "application/json")
    client := &http.Client{}
    resp, err := client.Do(req)

    if err != nil {
       return
    }

    defer resp.Body.Close()
    fmt.Println("response Status:", resp.Status)
    fmt.Println("response Headers:", resp.Header)

    return
}