ios请求后获取相关响应头参数

/*GET请求/

···

• (void)GET:(NSString *)url parameters:(NSDictionary *)params success:(CodeSuccessBlock)success failure:(FailureBlock)failure{

    NSMutableDictionary *totalParams = [NSMutableDictionary dictionary];
    [totalParams addEntriesFromDictionary:[self getCommonParameters]];
    [totalParams addEntriesFromDictionary:params];
    NSLog(@"URL:%@ params:%@",url,totalParams);
  

  //去除掉首尾的空白字符和换行字符
  NSString * removeUrlStr= [url stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
  //url字符串UTF-8编码
  NSString *endUrlStr = [removeUrlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

  [self.manager GET:endUrlStr parameters:totalParams headers:self.headParams progress:^(NSProgress * _Nonnull downloadProgress) {

  } success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
  dispatch_async(dispatch_get_main_queue(), ^{
  //统一处理Code状态
  NSInteger code = [self judgeCodeHandleWithJsonDic:responseObject];
  NSString * message = responseObject[@"message"];
  if (success) {
  success(code,responseObject,message);

             //设置响应头数据
              NSHTTPURLResponse * response = (NSHTTPURLResponse *)task.response;
              NSDictionary* headFilesDic = response.allHeaderFields;
              NSLog(@"GET+++响应头：%@ ",headFilesDic);
             
             //响应头中获取token参数，含有refresh-token的话，和本地token对比更新token
             [self refreshTokenWithHeadfilesDic:headFilesDic];
         }
    });
  

  } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
  [MBProgressHUD wj_showPlainText:error.description view:nil];
  if (failure) {
  failure(error);
  }
  }];
  }

#pragma mark - 响应头中获取token对比更新
-(void)refreshTokenWithHeadfilesDic:(NSDictionary *)headFilesDic{
NSString * refreshToken = headFilesDic[@"refresh-token"];
if (refreshToken.length > 0) {
//对比更新
NSString * localToken = GetToken;
if (![localToken isEqualToString:refreshToken]) {
//更新token
SaveToken(refreshToken);
}
}
}

···