在我的应用程序中,我实现了Retrofit来调用WebServices,我使用OkHttp来使用Interceptor和Authenticator.有些请求需要
token,我已经实现了Authenticator接口来处理刷新(遵循官方
documentation).但我有以下问题：在我的应用程序中不时,我必须立即调用多个请求.因此,对于其中一个我将有401错误.
public static <S> S createServiceAuthentication(Class<S> serviceClass,boolean hasPagination) {
final String jwt = JWT.getJWTValue(); //Get jwt value from Realm
if (hasPagination) {
Gson gson = new GsonBuilder().
registerTypeAdapter(Pagination.class,new PaginationTypeAdapter()).create();
builder =
new Retrofit.Builder()
.baseUrl(APIConstant.API_URL)
.addConverterFactory(GsonConverterFactory.create(gson));
}
OkHttpClient.Builder httpClient =
new OkHttpClient.Builder();
httpClient.addInterceptor(new AuthenticationInterceptor(jwt));
httpClient.authenticator(new Authenticator() {
@Override
public Request authenticate(Route route,Response response) throws IOException {
if (responseCount(response) >= 2) {
// If both the original call and the call with refreshed token Failed,// it will probably keep failing,so don't try again.
return null;
}
if (jwt.equals(response.request().header("Authorization"))) {
return null; // If we already Failed with these credentials,don't retry.
}
APIRest apiRest = createService(APIRest.class,false);
Call<JWTResponse> call = apiRest.refreshToken(new JWTBody(jwt));
try {
retrofit2.Response<JWTResponse> refreshTokenResponse = call.execute();
if (refreshTokenResponse.isSuccessful()) {
JWT.storeJwt(refreshTokenResponse.body().getJwt());
return response.request().newBuilder()
.header(CONTENT_TYPE,APPLICATION_JSON)
.header(ACCEPT,APPLICATION)
.header(AUTHORIZATION,"Bearer " + refreshTokenResponse.body().getJwt())
.build();
} else {
return null;
}
} catch (IOException e) {
return null;
}
}
});
builder.client(httpClient.build());
retrofit = builder.build();
return retrofit.create(serviceClass);
}
private static int responseCount(Response response) {
int result = 1;
while ((response = response.priorResponse()) != null) {
result++;
}
return result;
}
问题很简单,第一个请求将成功刷新令牌,但其他请求将失败,因为他们将尝试刷新已刷新的令牌. WebService返回错误500.有没有优雅的解决方案来避免这种情况？
谢谢 ！
