調用任何其他接口的時候,都需要先獲取access_token
並且不能頻繁調用,需要有緩存機制
package wechat_kf_sdk import ( "bytes" "encoding/json" "encoding/xml" "errors" "fmt" "github.com/patrickmn/go-cache" "io" "io/ioutil" "log" "net/http" "sync" "time" ) // 定義獲取access_token的響應數據結構體 type AccessTokenResponse struct { ErrCode int `json:"errcode"` // 錯誤碼 ErrMsg string `json:"errmsg"` // 錯誤信息 AccessToken string `json:"access_token"` // access_token ExpiresIn int `json:"expires_in"` // 過期時間 } // 定義微信客服API的封裝結構體 type KefuWework struct { corpid string // 企業ID corpsecret string // 企業密鑰 Token string // 令牌 EncodingAESKey string // AES加密密鑰 mutex sync.Mutex // 互斥鎖,用於保護access_token的獲取 } var weworkCache = cache.New(5*time.Minute, 10*time.Minute) // 緩存,用於存儲access_token // 創建微信客服API的封裝結構體實例 func NewKefuWework(corpid string, corpsecret, Token, EncodingAESKey string) *KefuWework { return &KefuWework{ corpid: corpid, corpsecret: corpsecret, Token: Token, EncodingAESKey: EncodingAESKey, } } // 獲取access_token的函數 func (s *KefuWework) GetAccessToken() (string, error) { // 加鎖,避免併發調用獲取access_token接口 s.mutex.Lock() defer s.mutex.Unlock() // 判斷access_token是否過期,如果未過期則直接返回 cacheKey := "wework_access_" + s.corpid if accessToken, ok := weworkCache.Get(cacheKey); ok { return accessToken.(string), nil } // 發送GET請求,構建請求URL reqURL := fmt.Sprintf("%s?corpid=%s&corpsecret=%s", "https://qyapi.weixin.qq.com/cgi-bin/gettoken", s.corpid, s.corpsecret) resp, err := http.Get(reqURL) if err != nil { return "", err } defer resp.Body.Close() // 解析響應數據到AccessTokenResponse結構體 var tokenResp AccessTokenResponse if err := json.NewDecoder(resp.Body).Decode(&tokenResp); err != nil { return "", err } // 判斷獲取access_token是否成功 if tokenResp.ErrCode != 0 { return "", fmt.Errorf("GetAccessToken failed: %s", tokenResp.ErrMsg) } weworkCache.Set(cacheKey, tokenResp.AccessToken, time.Duration(tokenResp.ExpiresIn-3600)*time.Second) log.Printf("GetAccessToken kefuWework:%s\n", tokenResp.AccessToken) // 返回access_token return tokenResp.AccessToken, nil }
測試用例
func TestGetAccessToken(t *testing.T) { corpid := "xx" corpsecret := "xxxxxxxxxxx" // 創建微信客服API的封裝結構體實例 kefuWework := NewKefuWework(corpid, corpsecret, "", "") // 獲取access_token accessToken, err := kefuWework.GetAccessToken() if err != nil { fmt.Println(err) return } fmt.Println(accessToken) }
可以正確拿到access_token