smart_canteen/app/customer/svc/svc_wx_access_token.go

package svc

import (
	"applet/app/customer/md"
	"applet/app/db"
	"applet/app/enum"
	"applet/app/utils/cache"
	"applet/app/utils/logx"
	"github.com/medivhzhan/weapp/v2"
)

func GetWxAccessToken() (accessToken string, err error) {
	cacheKey := md.WxAccessToken
	// 获取之前生成的token
	accessToken, err = cache.GetString(cacheKey)
	if err != nil {
		_ = logx.Error(err)
	}

	// 没有获取到
	if err != nil || accessToken == "" {
		sysCfgDb := db.SysCfgDb{}
		sysCfgDb.Set()
		cfg := sysCfgDb.SysCfgFindWithDb(enum.WxAppletAppId, enum.WxAppletAppSecret)

		// 生成
		res, err1 := weapp.GetAccessToken(cfg[enum.WxAppletAppId], cfg[enum.WxAppletAppSecret])
		if err1 != nil {
			return "", err1
		}
		accessToken = res.AccessToken

		// 缓存
		_, err = cache.SetEx(cacheKey, accessToken, md.WxAccessTokenCacheTime)
		if err != nil {
			return "", err
		}
		return accessToken, nil
	}

	return accessToken, nil
}