我正在尝试从MVC POST操作方法调用Web API并接收结果,但不确定如何接收,例如:
[HttpPost]
public ActionResult Submit(Model m)
{
// Get the posted form values and add to list using model binding
IList<string> MyList = new List<string> { m.Value1,
m.Value2, m.Value3, m.Value4};
return Redirect???? // Redirct to web APi POST
// Assume this would be a GET?
return Redirect("http://localhost:41174/api/values")
}
我希望将上面的MyList发送到Web Api进行处理,然后它会将结果(int)发送回原始控制器:
// POST api/values
public int Post([FromBody]List<string> value)
{
// Process MyList
// Return int back to original MVC conroller
}
不知道如何进行,任何帮助都表示感谢。
您不应该使用POST重定向,重定向几乎总是使用GET,但无论如何您都不想重定向到API:浏览器将如何处理响应?
您必须从MVC控制器执行POST并返回数据。
类似这样的东西:
[HttpPost]
public ActionResult Submit(Model m)
{
// Get the posted form values and add to list using model binding
IList<string> postData = new List<string> { m.Value1, m.Value2, m.Value3, m.Value4 };
using (var client = new HttpClient())
{
// Assuming the API is in the same web application.
string baseUrl = HttpContext.Current
.Request
.Url
.GetComponents(UriComponents.SchemeAndServer, UriFormat.SafeUnescaped);
client.BaseAddress = new Uri(baseUrl);
int result = client.PostAsync("/api/values",
postData,
new JsonMediaTypeFormatter())
.Result
.Content
.ReadAsAsync<int>()
.Result;
// add to viewmodel
var model = new ViewModel
{
intValue = result
};
return View(model);
}
}
您的Web API控制器本身不应该做太多工作。在具有适当的关注点分离的应用程序中,您的处理应该在其他地方进行。例如:
这可能在您的域模型中。
public class StringUtilities
{
//Just a representative method of one way of processing the strings
public int CountSomeStrings(IEnumerable<string> strings)
{
return strings.Count();
}
}
Web API 的一部分
// POST api/values
public int Post([FromBody]List<string> value)
{
return StringUtilities.CountSomeStrings(value);
}
然后调用你的MVC控制器,不需要调用Web API。只需调用它直接调用的方法。
[HttpPost]
public ActionResult Submit(Model m)
{
// Get the posted form values and add to list using model binding
IList<string> MyList = new List<string> { m.Value1,
m.Value2, m.Value3, m.Value4};
int NumStrings = StringUtilities.CountSomeStrings(MyList);
ViewBag["NumStrings"] = NumStrings;
return View();
}
在控制器中使用
public async Task<ActionResult> EmployeeRegister(CreateEmployee model)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:8082/");
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Accept.Clear();
HttpResponseMessage response = await client.PostAsJsonAsync("api/CreateEmployee/PostEmployee", model);
if (response.IsSuccessStatusCode == true)
{
return View();
}
return View();
}