爲什麼我不能使用[HttpPost]而不是[HttpPost（「[action]」）]？

Question

我不明白爲什麼我需要使用[HttpPost("[action]")]而不是[HttpPost]？

如果使用[HttpPost("[action]")]，則來自角客戶端的請求會觸發控制器操作。

// POST: api/LeaveRequests 
[HttpPost("[action]")] 
public async Task<IActionResult> PostLeaveRequest([FromBody] LeaveRequest leaveRequest) 
{ 
    if (!ModelState.IsValid) 
    { 
     return BadRequest(ModelState); 
    } 

    _context.LeaveRequests.Add(leaveRequest); 
    await _context.SaveChangesAsync(); 

    return CreatedAtAction("GetLeaveRequest", new { id = leaveRequest.EmployeeNo }, leaveRequest); 
} 

但 如果我只是把[HttPost]然後從anglular客戶端的請求沒有命中控制器動作，而是它命中的方法與路徑[HttpGet("{id}")]

我的MVC路線

app.UseMvc(routes => 
      { 
       routes.MapRoute(
        name: "default", 
        template: "{controller=Home}/{action=Index}/{id?}"); 

       routes.MapSpaFallbackRoute(
        name: "spa-fallback", 
        defaults: new { controller = "Home", action = "Index" }); 
      }); 

我的角http.post

return this.http.post(this._apiUrl, body, options) 
    .map(res => res.json()) // ...and calling .json() on the response to return data 
    .catch((error: any) => Observable.throw(error.json().error || 'Server error')) 
    .subscribe(); 

Answer 1

這[HttpPost("blah blah")]是定義路線link

或者您可以使用Attribute routingRead this article

[HttpPost] 
[Route("PostLeaveRequest")] 
public async Task<IActionResult> PostLeaveRequest([FromBody] LeaveRequest leaveRequest) 
{ 
.................................. 

}