将小程序获取ak的方式也抽象出来

miniprogram/context/access_token.go

@@ -1,87 +0,0 @@
-package context
-
-import (
-	"encoding/json"
-	"fmt"
-	"sync"
-	"time"
-
-	"github.com/silenceper/wechat/v2/util"
-)
-
-const (
-	//AccessTokenURL 获取access_token的接口
-	AccessTokenURL = "https://api.weixin.qq.com/cgi-bin/token"
-	//CacheKeyPrefix cache前缀
-	CacheKeyPrefix = "gowechat_miniprogram_"
-)
-
-//ResAccessToken struct
-type ResAccessToken struct {
-	util.CommonError
-
-	AccessToken string `json:"access_token"`
-	ExpiresIn   int64  `json:"expires_in"`
-}
-
-//GetAccessTokenFunc 获取 access token 的函数签名
-type GetAccessTokenFunc func(ctx *Context) (accessToken string, err error)
-
-//SetAccessTokenLock 设置读写锁（一个appID一个读写锁）
-func (ctx *Context) SetAccessTokenLock(l *sync.RWMutex) {
-	ctx.accessTokenLock = l
-}
-
-//SetGetAccessTokenFunc 设置自定义获取accessToken的方式, 需要自己实现缓存
-func (ctx *Context) SetGetAccessTokenFunc(f GetAccessTokenFunc) {
-	ctx.accessTokenFunc = f
-}
-
-//GetAccessToken 获取access_token
-func (ctx *Context) GetAccessToken() (accessToken string, err error) {
-	ctx.accessTokenLock.Lock()
-	defer ctx.accessTokenLock.Unlock()
-
-	if ctx.accessTokenFunc != nil {
-		return ctx.accessTokenFunc(ctx)
-	}
-	accessTokenCacheKey := fmt.Sprintf("%s_access_token_%s", CacheKeyPrefix, ctx.AppID)
-	val := ctx.Cache.Get(accessTokenCacheKey)
-	if val != nil {
-		accessToken = val.(string)
-		return
-	}
-
-	//从微信服务器获取
-	var resAccessToken ResAccessToken
-	resAccessToken, err = ctx.GetAccessTokenFromServer()
-	if err != nil {
-		return
-	}
-
-	accessToken = resAccessToken.AccessToken
-	return
-}
-
-//GetAccessTokenFromServer 强制从微信服务器获取token
-func (ctx *Context) GetAccessTokenFromServer() (resAccessToken ResAccessToken, err error) {
-	url := fmt.Sprintf("%s?grant_type=client_credential&appid=%s&secret=%s", AccessTokenURL, ctx.AppID, ctx.AppSecret)
-	var body []byte
-	body, err = util.HTTPGet(url)
-	if err != nil {
-		return
-	}
-	err = json.Unmarshal(body, &resAccessToken)
-	if err != nil {
-		return
-	}
-	if resAccessToken.ErrMsg != "" {
-		err = fmt.Errorf("get access_token error : errcode=%v , errormsg=%v", resAccessToken.ErrCode, resAccessToken.ErrMsg)
-		return
-	}
-
-	accessTokenCacheKey := fmt.Sprintf("%s_access_token_%s", CacheKeyPrefix, ctx.AppID)
-	expires := resAccessToken.ExpiresIn - 1500
-	err = ctx.Cache.Set(accessTokenCacheKey, resAccessToken.AccessToken, time.Duration(expires)*time.Second)
-	return
-}

miniprogram/context/context.go

@@ -1,18 +1,12 @@
 package context
 
 import (
-	"sync"
-
+	"github.com/silenceper/wechat/v2/credential"
 	"github.com/silenceper/wechat/v2/miniprogram/config"
 )
 
 // Context struct
 type Context struct {
 	*config.Config
-
-	//accessTokenLock 读写锁 同一个AppID一个
-	accessTokenLock *sync.RWMutex
-
-	//accessTokenFunc 自定义获取 access token 的方法
-	accessTokenFunc GetAccessTokenFunc
+	credential.AccessTokenHandle
 }