我想把一个对象通过 HttpResponseMessage
从我的客户端代码中读取该对象,并在服务器端保存userId。
我的客户端看起来是这样的,在服务器端,它应该是这样的
public async Task<ViewResult> Add(Car car)
{
Car c;
using (Database db = new Database())
{
c = db.Cars.First(x => x.Id == car.Id);
}
HttpClient client = new HttpClient();
string json = JsonConvert.SerializeObject(c);
HttpContent httpContent = new StringContent(json);
string url = "https://localhost:5001/api/cars/Saved/userId = " + AccountController.curentUser;
HttpResponseMessage response = await client.PostAsync(url, httpContent);
return View("~/Views/Car/PreviewCar.cshtml");
}
而在服务器端,应该是这样的。
[HttpPost("Saved/userId = {userId}")]
public async Task<ActionResult<CarS>> PostSavedCar(string userId)
{
// car = get from client side
car.UserId = userId;
_context.SavedCars.Add(car);
await _context.SaveChangesAsync();
return CreatedAtAction("GetSavedCar", new { id = car.Id }, car);
}
我不知道应该在那个注释部分写上什么,才能得到对象,然后反序列化?
在你的客户端设置内容类型为json。
HttpContent httpContent = new StringContent(json, Encoding.UTF8,"application/json");
还有你的Api:
[HttpPost("Saved/userId = {userId}")]
public async Task<ActionResult<CarS>> PostSavedCar([FromBody]Car car, string userId)
{
car.UserId = userId;
_context.SavedCars.Add(car);
await _context.SaveChangesAsync();
return CreatedAtAction("GetSavedCar", new { id = car.Id }, car);
}
实际上你不需要单独传递userId - 为什么不在客户端设置car.UserId,因为你已经知道它是什么值(或者更好的是在服务器端设置它)?这样你就可以在请求体中传递car了。