Restsharp不返回任何数据获取请求和发布请求 [英] Restsharp not returning any data get request and post request

问题描述

我正在学习如何使用RestSharp来进行web api调用。当我使用Postman发出get请求时它返回200并且在正文中它给我null而不是json当我用Postman发出一个帖子请求它返回204（没有内容）。

所有建议欢迎。谢谢。



我尝试过：



这是我的产品带有集合的类和获取方法：

I am learning how to use RestSharp to make my web api calls. When l make a get request with Postman it returns 200 and in the body it gives me null instead of json and when l make a post request with Postman it returns a 204(no content).
All suggestions are welcomed. Thanks.

What I have tried:

Here is my product class with the set and get mehtods:

public class Product
 {
  public string ProductName { get; set; }
  public string ProductPrice { get; set; }
  public string Manufacturer { get; set; }
  public string Shop { get; set; }
   }

这是我的产品控制器类：

Here is my products controller class:

  public class ProductsController : ApiController
   {
      Product[] p = new Product[]
       {
       new  Product { ProductName = "JIM", Manufacturer = "Kofi",  ProductPrice = "22", Shop = "12"}
       };



// GET: api/Products/5
public IEnumerable<product> GetAll()
{
    var client = new RestClient("http://localhost:4282/");
    var request = new RestRequest("api/products", Method.GET) { RequestFormat = DataFormat.Json };
    var response = client.Execute<List<product>>(request);

    }

// POST: api/Products
public void Post([FromBody] Product p)
  {
    var client = new RestClient("http://localhost:4282/");
    var request = new RestRequest("api/products", Method.POST);
    request.RequestFormat = DataFormat.Json;
    request.AddJsonBody(p);
    client.Execute(request);
      }

推荐答案

我还没有用过 RestSharp 之前，但这是我的看法：



首先，你的代码没有意义。您正在创建 Web API 端点，并且您正在端点实现中调用/使用相同的端点。正如我在google搜索后所了解的那样，RestSharp是一个REST Http客户端。这意味着您单独构建Web API并在.NET代码中使用RestSharp来使用它们。这是一篇很好的文章，演示了我在说什么： ASP.NET Web API， RestSharp和模型错误消息| DotNetCurry [ ^ ]



其次，确认您将内容类型设置为邮递员配置中的application / json 。



三，你的获取结束 - point没有返回，这就是为什么你得到 null 。你应该有类似的东西：

I haven't used RestSharp before but here's my take:

First off, your code doesn't make sense. You're creating a Web API endpoint and your are calling/consuming the same endpoint within the endpoint implementation. As I've understand after googling, RestSharp is a REST Http Client. This means that you build Web APIs separately and use RestSharp within your .NET code to consume them. Here's a good article that demonstrates what I am talking about: ASP.NET Web API, RestSharp and Model Error Messages | DotNetCurry[^]

Second, verify that you set the content-type to application/json in Postman configuration.

third, your Get end-point doesn't have a return that's why you are getting null. You should have something like:

public IEnumerable<product> GetAll()
{
    var client = new RestClient("http://localhost:4282/");
    var request = new RestRequest("api/products", Method.GET) { RequestFormat = DataFormat.Json };
    var response = client.Execute<List<product>>(request);

    if (response.Data == null)  
          throw new Exception(response.ErrorMessage);  
  
     return response.Data;  
}

第四，您的帖子端点无效，因此它返回 204 （无内容）。您可以返回 IHttpActionResult 之类的内容：

fourth, your Post endpoint is void, thus it is returning 204(No Nontent). You can return an IHttpActionResult something like:

public IHttpActionResult Post([FromBody] Product p)
{
    var client = new RestClient("http://localhost:4282/");
    var request = new RestRequest("api/products", Method.POST);
    request.RequestFormat = DataFormat.Json;
    request.AddJsonBody(p);
    return Ok(client.Execute(request));
}

最后，在设计 REST API 时Web API，我建议给这篇简短的文章读一读： ASP.NET核心和Web API：用于管理异常和一致响应的自定义包装器 [ ^ ]

and finally, when designing a REST API with Web API, I'd suggest to give this short article a read: ASP.NET Core and Web API: A Custom Wrapper for Managing Exceptions and Consistent Responses[^]

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