[英]Refresh token in flutter
I'm working on a finance project (Flutter) where the auth token gotten from the back-end expires frequently .我正在从事一个金融项目(Flutter),其中从后端获取的身份验证令牌经常过期。
How can I keep the token from expiring as long as the user is using the app .只要用户正在使用该应用程序,我如何才能使令牌不过期。
What I suggest is you can handle the things in simple manner like when fetching the data if the token expires you get a 401 unAuthorized Exception where you can ask for a new token(refresh Token) and then make the fetch request again.我的建议是您可以以简单的方式处理这些事情,例如在令牌过期时获取数据时,您会收到 401 unAuthorized Exception,您可以在其中请求新令牌(刷新令牌),然后再次发出获取请求。 Let me know if it worked for you.让我知道它是否对您有用。
Use oauth_dio: ^0.2.3 https://pub.dev/packages/oauth_dio使用 oauth_dio:^ 0.2.3 https://pub.dev/packages/oauth_dio
OAuthToken token = oauth.requestToken(
RefreshTokenGrant(
refreshToken: '<YOUR REFRESH TOKEN>'
)
).then((token) {
print(token.accessToken);
});
How I solved this issue was:我如何解决这个问题是:
final accessToken = await CustomSharedPreferences().getUserToken('userToken');
then use it:然后使用它:
bool accessTokenHasExpired = JwtDecoder.isExpired(accessToken);
Using Dio with interceptors:使用带有拦截器的 Dio:
if (accessTokenHasExpired) { print('Inside Access Token has Expired'); dio.interceptors.requestLock.lock(); dio.interceptors.responseLock.lock(); dio.interceptors.errorLock.lock(); _refreshed = await _regenerateAccessToken(); dio.interceptors.requestLock.unlock(); dio.interceptors.responseLock.unlock(); dio.interceptors.errorLock.unlock(); print('Outside Access Token'); }
the _regenerateAccessToken method: _regenerateAccessToken 方法:
_regenerateAccessToken() async {
try{
var refreshToken = await CustomSharedPreferences().getRefreshToken('refreshToken');
print("This is the refresh token: $refreshToken");
var body = {
"refresh_token": refreshToken,
};
var dio = Dio();
Response response = await dio.post(ApiConstant.REFRESH_TOKEN, data: body,options: Options(
receiveTimeout: 5000,
headers:{
"Accept": "application/json",
"Content-Type": "application/json;charset=UTF-8",
},
validateStatus: (status){
return status! <= 500;
},
),
);
if (response.statusCode == 200 || response.statusCode == 201 ) {
RefreshTokenModel refreshToken = RefreshTokenModel.fromJson(response.data);
await CustomSharedPreferences().setUserToken(refreshToken.idToken);
var checkTime = JwtDecoder.getRemainingTime(refreshToken.idToken);
CustomSharedPreferences().setRefreshToken(refreshToken.refreshToken);
return true;
}
else {
print("Refresh Token Server Responded Back with: ${response.statusCode}");
return false;
}
}
on DioError{
return false;
}
catch (e) {
return false;
}
}
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