我已经在c#中使用Web api 2创建了一个控制器。
我的控制器方法是一篇文章,并成功完成,返回201
但是当客户端收到响应时,将返回500内部服务器错误。
有人可以告知为什么会这样吗?
我认为一旦控制器返回一个值,请求就完成了,显然不是这种情况。
[HttpPost]
[Route("PostProperty/{agentId}")]
public async Task<IActionResult> PostProperty(int agentId, [FromBody]CreatePropertyRequestDto value)
{
string result = await _mediator.Send(new NewPropertyRequest() { NewProperty = value, AgentId = agentId });
var c = CreatedAtRoute("getproperties", new { agentId, propertyIds = result }, result);
return c;
}
如果我在输出窗口中查看,可以看到抛出了500,但是我仍然不知道在哪里或为什么。请帮助
Application Insights Telemetry (unconfigured): {
"name": "Microsoft.ApplicationInsights.Dev.Request",
"time": "2018-08-13T20:51:39.9717971Z",
"tags": {
"ai.operation.name": "POST Properties/PostProperty [agentId]",
"ai.cloud.roleInstance": "DESKTOP-DM70VVS",
"ai.location.ip": "127.0.0.1",
"ai.application.ver": "1.0.0.0",
"ai.operation.id": "4d86444a-4e214be6ea456695",
"ai.internal.nodeName": "DESKTOP-DM70VVS",
"ai.internal.sdkVersion": "aspnet5c:2.1.1"
},
"data": {
"baseType": "RequestData",
"baseData": {
"ver": 2,
"id": "|4d86444a-4e214be6ea456695.",
"name": "POST Properties/PostProperty [agentId]",
"duration": "00:00:02.7187869",
"success": false,
"responseCode": "500",
"url": "http://localhost:63103/api/properties/PostProperty/1",
"properties": {
"httpMethod": "POST",
"AspNetCoreEnvironment": "Development",
"DeveloperMode": "true"
}
}
}
}
编辑:
如果我返回OK(result)
,则返回200。现在,我可以确认CreatedAtRoute()
是元凶。我已在Startup.cs中启用app.UseDeveloperExceptionPage();
,并向我显示了一条有用的消息
InvalidOperationException:没有路由与提供的值匹配。
正在阅读this线程,我可以看到我必须与要说的内容创建动作的参数相匹配。
更新后的操作
[HttpPost]
[Route("PostProperty/{agentId}")]
public async Task<IActionResult> PostProperty(int agentId, [FromBody]CreatePropertyRequestDto value)
{
string result = await _mediator.Send(new NewPropertyRequest() { NewProperty = value, AgentId = agentId });
return CreatedAtRoute($"GetProperty", new { agentId = agentId, propertyId = result });
}
上面引用的操作
[HttpGet]
[Route("GetProperty/{agentId}/{propertyId}")]
public async Task<IActionResult> GetProperty(int agentId, string propertyId)
{
if (agentId <= 0 || propertyId == null)
{
return BadRequest("agentId or propertyId was invalid. agentId must be a valid id and propertyId cannot be null");
}
IEnumerable<PropertyDto> properties = await GetPropertiesRequest(agentId, new List<string>(){ propertyId });
PropertyDto property = properties.FirstOrDefault();
if (property == null)
{
return NotFound();
}
return Ok(property);
}
即使更新了我的帖子操作,我仍然可以得到
InvalidOperationException:没有路由与提供的值匹配。
以下还返回相同的异常
CreatedAtRoute(routeName: "GetProperty", routeValues: new { agentId = agentId, propertyId = result }, value: result);
答案 0 :(得分:1)
我使用CreatedAtAction()
解决了我的问题。在这种情况下,CreatedAtRoute
更适合,因为它在同一控制器中。有关差异的更详细说明,请阅读this thread
CreatedAtAction($"GetProperty", new { agentId = agentId, propertyId = result }, result);