Rest Api 将 null 值传递给 ZAC5C74B64B4B8352EF2F18AZ1AFFB5AC2

Question

I have an Object which has a property statusDate of type DateTime. This property is a nullable type with implementation as:

public DateTime? statusDate {get;set;}

I am using Rest Api to insert data into the database. I get error 400 Bad Request. After some Googling I have realized that because the value is null my Rest Api url is throwing the error. How do I pass null values to Rest Api

Example: http://localhost:62733/api/Claims/InsertAsync/username=Zainalds&statusDate=null

        public static async Task<long> PostAsyncLong<T>(Uri uri, T postObject)
        {
           var httpContent = new StringContent(JsonSerializer.Serialize(postObject), Encoding.UTF8, "application/json");
           var response = await _httpClient.PostAsync(uri, httpContent, _cancellationToken).ConfigureAwait(false);

           return await GetResult<long>(response);
        }

Answer 1

It depends upon what type of API request you accessing [GET] or [POST]

GET REQUEST

Request accessing you need to handle on code level eg.

• API URL - api/testController/InsertAsync?username=Zainalds&statusDate=null

   [HttpGet] public string InsertAsync(string username, DateTime? statusDate) { return "value"; }

---

POST REQUEST

Request accessing you don't need to assign value for statusDate then default set to null eg.

Request Model

public class InsertAsyncRequest
{
     public string username { get; set; }
     public DateTime? statusDate { get; set; }
}

In API Controller

 [HttpPost]
 public string InsertAsync(InsertAsyncRequest _req)
 {    
     return "value";
 }

Answer 2

The answer is pretty straight forward make sure all submodules are updated to use latest POCO classes.