Question

美好的一天偷看，

我一直坚持这个问题大约6个小时，我无法弄清楚它有什么问题。首先，我正在尝试向服务器端点发送请求，这需要某种形式的基本身份验证作为json 。但是当它命中方法“Execute”时它会抛出一个空引用异常。不是下面的代码：

        SomeObjectClass someObject = new SomeObjectClass();

        RestRequest request = new RestRequest();
        request.Method = Method.POST;
        request.JsonSerializer = new CustomJsonSerializer();
        request.RequestFormat = DataFormat.Json;

        ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(delegate { return true; });

        var client = new RestClient();

        client.BaseUrl = "https://www.somewebsite.com/someapi/something";
        client.Authenticator = new HttpBasicAuthenticator("username","password");
        client.AddHandler("application/json", new CustomerSerializer);

        request.AddBody(someObject);

        var result = client.Execute<dynamic>(request);

        return result;

我一直在 NullReferenceException ：

at RestSharp.HttpBasicAuthenticator.<Authenticate>b__0(Parameter p)
at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
at RestSharp.HttpBasicAuthenticator.Authenticate(IRestClient client, IRestRequest request)
at RestSharp.RestClient.AuthenticateIfNeeded(RestClient client, IRestRequest request)
at RestSharp.RestClient.Execute(IRestRequest request, String httpMethod, Func`3 getResponse)
at RestSharp.RestClient.Execute(IRestRequest request)
at RestSharp.RestClient.Execute[T](IRestRequest request)

我最初的猜测是我对 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback（委托{return true;}）; 缺乏理解导致了这个问题，但我无法确定它。我已经在这个问题上花了相当多的时间并试图发布问题，如果有专家可以提供答案，我将非常感激。

Answer 1

我的解决方案是添加一个参数名称（我只有一个参数）。

更改前的代码：

//...set up client and create new request...
request.AddParameter(new Parameter()
{
  //Name was not included and therefore null
  Type = ParameterType.RequestBody,
  Value = JsonConvert.SerializeObject(new
  {
    name,
    domains,
    custom_fields = customFields
  })
});

HttpBasicAuthenticator的{{3}}是抛出异常的地方，因为null的{{1}}值未被处理。

Name

我将代码更改为以下内容并且有效：

if (!request.Parameters.Any(p => p.Name.Equals("Authorization", StringComparison.OrdinalIgnoreCase)))

RestSharp Basic Auth null引用异常

1 个答案: