问题
I try to use WebClient with oauth2 in spring webflux. I fetch a token from an url access token and i set it into the webclient. but i do not like to fetch this access token in every call of other secured endpoints. Means that i want to fetch it only in the first time during the instanciation of the webclient and when the access token expire.
Here is the code that i am using :
@Configuration
public class OauthEmployeConfig{
/**
** ... String baseUrl, String accessUrl for the access token url
**/
@Bean
public WebClient webClient(UserRegistration userRegistr) {
ClientRequest clientRequest = ClientRequest
.create(HttpMethod.POST, URI.create(accessUrl))
.header(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE)
.header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_FORM_URLENCODED_VALUE)
.headers(headers -> headers.setBasicAuth(userRegistr.getClientId(), userRegistr.getClientSecret()))
.body(BodyInserters.fromFormData("grant_type", userRegistr.getAuthorizGrantType())
.with("scope", userRegistr.getScope().replaceAll(",", "")))
.build();
return WebClient.builder()
.baseUrl(baseUrl)
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.defaultHeader(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE)
.filter((request, next) -> next.exchange(clientRequest)
.flatMap(response -> response.body(org.springframework.security.oauth2.core.web.reactive.function.OAuth2BodyExtractors.oauth2AccessTokenResponse()))
.map(accessToken -> accessToken.getAccessToken().getTokenValue())
.map(token -> setBearer(request, token))
.flatMap(next::exchange))
.filter(logRequest())
.filter(handleResponseError())
.build();
}
private ClientRequest setBearer(ClientRequest request, String token) {
return ClientRequest.from(request)
.header("Authorization", "Bearer " + token).build();
}
private static ExchangeFilterFunction handleResponseError() {
return ExchangeFilterFunction.ofResponseProcessor(
response -> response.statusCode().isError()
? response.bodyToMono(String.class)
.flatMap(errorBody -> Mono.error(new RuntimeException(errorBody, response.statusCode())))
: Mono.just(response));
}
private static ExchangeFilterFunction logRequest() {
return ExchangeFilterFunction.ofRequestProcessor(clientRequest -> {
clientRequest.headers().forEach((name, values) -> values.forEach(value -> LOG.info("{}={}", name, value)));
return Mono.just(clientRequest);
});
}
}
回答1:
I followed this toturial and also spring doc, and i had to change my code.
So my code looks like :
application.properties
spring.security.oauth2.client.registration.chris.authorization-grant-type=client_credentials
spring.security.oauth2.client.registration.chris.client-id=chris-client-id
spring.security.oauth2.client.registration.chris.client-secret=chris-secret
spring.security.oauth2.client.provider.chris.token-uri=http://localhost:8085/oauth/token
The Configuration class:
@Configuration
public OauthEmployeConfig {
@Bean
WebClient webClient(ReactiveClientRegistrationRepository clientRegistrations) {
ServerOAuth2AuthorizedClientExchangeFilterFunction oauth =
new ServerOAuth2AuthorizedClientExchangeFilterFunction(
clientRegistrations,
new UnAuthenticatedServerOAuth2AuthorizedClientRepository());
oauth.setDefaultClientRegistrationId("chris");
oauth.setDefaultOAuth2AuthorizedClient(true);
return WebClient.builder()
.filter(oauth)
.filter(logRequest())
.filter(handleResponseError())
.build();
}
private static ExchangeFilterFunction handleResponseError() {
return ExchangeFilterFunction.ofResponseProcessor(
response -> response.statusCode().isError() ?
response.bodyToMono(String.class)
.flatMap(errorBody -> Mono.error(new RunTimeException(errorBody, response.statusCode()))) :
Mono.just(response));
}
private static ExchangeFilterFunction logRequest() {
return ExchangeFilterFunction.ofRequestProcessor(clientRequest -> {
// To log the headers details like Token ...
clientRequest.headers().forEach((name, values) -> values.forEach(value -> LOGGER.info("{}={}", name, value)));
return Mono.just(clientRequest);
});
}
}
Rest Call via webClient:
...
webClient.get()
.uri("http://localhost:8084/retrieve-resource")
.retrieve()
...
This approach will of course update the access token after it expiration via the refresh token.
来源:https://stackoverflow.com/questions/60498791/how-to-set-the-access-token-once-during-the-instanciation-of-the-webclient-in-sp