1. 确保axios的请求格式为application/json
2. 在ASP.NET Core的Startup.cs文件中配置JsonSerializer

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using System.Text.Json;

namespace YourProjectNamespace
{
    public class Startup
    {
        //...
        public void ConfigureServices(IServiceCollection services)
        {
            //...
            services.AddControllers().AddJsonOptions(options =>
            {
                options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
                options.JsonSerializerOptions.DictionaryKeyPolicy = JsonNamingPolicy.CamelCase;
            });
        }
        //...
    }
}

3. 在控制器的方法中使用FromBody特性接收POST请求中的数据

[HttpPost]
public async Task Create([FromBody] YourModel model)
{
   //...
}