AFN拦截重定向设置httpBody

1、拦截重定向获取里面的cookie

AFHTTPRequestOperation *requestOperation=[[AFHTTPRequestOperation alloc] initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@""]]];    [requestOperation setRedirectResponseBlock:^NSURLRequest *(NSURLConnection *connection, NSURLRequest *request, NSURLResponse *redirectResponse) {        if (redirectResponse) {            NSHTTPURLResponse *response = (NSHTTPURLResponse *)redirectResponse;            NSString *cookieString = [[response allHeaderFields] valueForKey:@"Set-Cookie"];            [self getMobileHtmlByCookie:cookieString];        }        return request;    }];    [requestOperation start];

2、设置body

AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];    NSString *requestUrlStr = @"";    NSMutableURLRequest *req = [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:finalRequestStr parameters:nil error:nil];    [req setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];    // 设置postBody    [req setHTTPBody:postBody];    [[manager dataTaskWithRequest:req completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {        if (!error) {             // 返回数据成功        } else {            // 解析失败        }    }] resume];