asp.net-core - 为什么我不能使用 [HttpPost] 代替 [HttpPost ("[action]")]？

Question

我不明白为什么需要使用 [HttpPost("[action]")] 而不是 [HttpPost]？

如果使用[HttpPost("[action]")]，那么来自角度客户端的请求会触发 Controller 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);
}

但是如果我只放置 [HttPost] 那么来自 anglular 客户端的请求不会命中 Controller 操作，而是命中路径为 [HttpGet("{id}")] 的方法

我的MVC路线

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

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

我的角度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

这个[HttpPost("blah blah")]用于定义路由link

或者，您可以使用属性路由 Read this article

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

}