松弛发送带有附件的通知

I want to send a Slack notification with an attached file. This is my current code:

package Message

import (
    "fmt"
    "os"
    "github.com/ashwanthkumar/slack-go-webhook"
)

func Message(message string, cannalul string, attash bool) {
    f, err := os.Open(filename)
    if err != nil {
      return false
    }
    defer f.Close()

    _  = f

    fullName := "myServer"
    webhookUrl := "https://hooks.slack.com/services/......."

    attachment1 := slack.Attachment {}
    //attachment1.AddField(slack.Field { Title: "easySmtp", Value: "EasySmtp" }).AddField(slack.Field { Title: "Status", Value: "Completed" })
    if attash {
        attachment1.AddField(slack.Field { Title: "easySmtp", Value: fullName})
    }
    payload := slack.Payload {
      Text: message,
      Username: "worker",
      Channel: cannalul,
      IconEmoji: ":grin:",
      Attachments: []slack.Attachment{attachment1},
    }
    err := slack.Send(webhookUrl, "", payload)
    if len(err) > 0 {
      fmt.Printf("error: %s
", err)
    }
}

My code works, but I don't know how I can add an attached file in my current code. How I can do this?

You can not attach a file to an attachment through a webhook in Slack. That functionality does not exist in Slack.

If its just text you can add the content as part of the message or another attachments (up to a limit of currently 500,000 characters, which will soon be reduced to 40,000 - see here for reference).

Or you can directly upload a file to a channel with the API method files.upload.