ElectronicInvoice/util/qywx.go

package util

import (
	"context"
	"crypto/md5"
	"encoding/base64"
	"fmt"
	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/skip2/go-qrcode"
	"io"
	"net/http"
	"strings"
)

// SendQrImage2ChatBot 发送二维码给群聊机器人
func SendQrImage2ChatBot(qrContent string) error {
	res, err := qrcode.Encode(qrContent, qrcode.Medium, 256)
	if err != nil {
		return gerror.Wrap(err, "解密二维码异常")
	}
	rawStr := base64.StdEncoding.EncodeToString(res)
	h := md5.New()
	h.Write(res)
	hash := h.Sum(nil)
	hashStr := fmt.Sprintf("%x", hash)
	postBody := fmt.Sprintf(`{
		"msgtype": "image",
		"image": {
			"base64": "%s",
			"md5": "%s",
			"mentioned_list":["@%s"]
		}
	}`, rawStr, strings.ToLower(hashStr), "all")

	client := new(http.Client)
	req, err := http.NewRequest("POST", g.Cfg().MustGet(context.Background(), "qwxRobotUrl").String(),
		strings.NewReader(postBody))
	if err != nil {
		return gerror.Wrap(err, "请求企业微信机器人接口异常")
	}
	req.Header.Set("Content-Type", "application/json")
	resp, err := client.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	bb, _ := io.ReadAll(resp.Body)
	fmt.Println(string(bb))
	return nil
}