pub static GRANT_TYPE: &str = "grant_type";
pub static AUTHORIZATION_CODE: &str = "authorization_code";
pub static CODE: &str = "code";
pub static JS_CODE: &str = "js_code";
pub static CLIENT_CREDENTIAL: &str = "client_credential";
pub static APPID: &str = "appid";
pub static OPENID: &str = "openid";
pub static LANG: &str = "lang";
pub static ZH_CN: &str = "zh_CN";
pub static SECRET: &str = "secret";
pub static ACCESS_TOKEN: &str = "access_token";
pub static REFRESH_TOKEN: &str = "refresh_token";