Question

我有一个简单的CRUD操作控制器。所有操作都可以使用名为Delete的最后一个操作，即HTTP DELETE操作。当我尝试使用示例url调用删除操作时：

http://localhost/api/groups/1/attendances/10

然后应用程序返回404 Not Found并且操作未触发。

在我的其他控制器中，删除操作正常工作。一个区别是，在其他控制器中，我在控制器上有一个路由属性而不是每个操作。这是一个问题？

public class AttendancesController : Controller
{
  public AttendancesController(IGroupService groupService, IAttendanceService attendanceService, IPersonService personService, IPersonAttendanceService personAttendanceService)
  {
     //
  }

  [Route("api/groups/{groupId}/[controller]")]
  [HttpGet]
  public IActionResult GetAttendancesForGroup(int groupId)
  {
     //
  }

  [Route("api/groups/{groupId}/[controller]/{date}")]
  [HttpGet]
  public IActionResult GetAttendanceForGroup(int groupId,  DateTime date)
  {
     //
  }

  [Route("api/groups/{groupId}/[controller]")]
  [HttpPost]
  public IActionResult CreateAttendanceForGroup(int groupId, [FromBody] AttendanceCreateDto dto)
  {
     //
  }


  [Route("api/people/{personId}/[controller]")]
  [HttpGet]
  public IActionResult GetAttendancesForPerson(int personId)
  {
    //
  }

  [Route("api/groups/{groupId}/[controller]")]
  [HttpDelete("{id}")]
  public IActionResult Delete(int groupId, int id)
  {
     var group = _groupService.FindById(groupId);
     if (group == null)
        return NotFound();
     var attendance = _attendanceService.GetAttendanceByIdAndGroupId(id,groupId);
     if (attendance == null)
        return NotFound();

     _attendanceService.Delete(attendance);
     return NoContent();
  }
}

Answer 1

我不明白为什么在这种情况下[HttpDelete（“{id}”）]会被忽略。

你正在混合路线。

按如下方式重构该类。

将公共路由添加到控制器作为路由前缀，并利用路由约束

[Route("api/groups/{groupId}/[controller]")]
public class AttendancesController : Controller {
    public AttendancesController(IGroupService groupService, IAttendanceService attendanceService, IPersonService personService, IPersonAttendanceService personAttendanceService) {
        //
    }


    [HttpGet] // Matches GET api/groups/1/attendances
    public IActionResult GetAttendancesForGroup(int groupId) {
        //
    }


    [HttpGet("{date:datetime}")] //Matches GET api/groups/1/attendances/2017-05-27
    public IActionResult GetAttendanceForGroup(int groupId,  DateTime date) {
        //
    }

    [HttpPost] // Matches POST api/groups/1/attendances
    public IActionResult CreateAttendanceForGroup(int groupId, [FromBody] AttendanceCreateDto dto) {
        //
    }


    [HttpGet("~/api/people/{personId}/[controller]")] // Matches GET api/people/1/attendances
    public IActionResult GetAttendancesForPerson(int personId) {
        //
    }

    [HttpDelete("{id:int}")] // Matches DELETE api/groups/1/attendances/10
    public IActionResult Delete(int groupId, int id) {
        var group = _groupService.FindById(groupId);
        if (group == null)
            return NotFound();
        var attendance = _attendanceService.GetAttendanceByIdAndGroupId(id,groupId);
        if (attendance == null)
            return NotFound();

        _attendanceService.Delete(attendance);
        return NoContent();
    }
}

ASP.NET CORE Web API - 删除未触发的操作（未找到404）

1 个答案: