Question

我的DateTime对象需要精确度，因此我将Ticks从Windows服务发送到WebApi。这是我对api的调用，最后一个参数是datetime

V1 /产品/ 2/1 /636149434774700000分之1000

在Api上，请求命中一个如下所示的控制器：

[Route("api/v1/Product/{site}/{start?}/{pageSize?}/{from?}")]
public IHttpActionResult Product(Site site, int start = 1, int pageSize = 100, DateTime? fromLastUpdated = null)

默认模型绑定器无法将标记绑定到DateTime参数。任何提示将不胜感激。

Answer 1

独立使用long fromLastUpdated parse和cast to DateTime

[Route("api/v1/Product/{site}/{start?}/{pageSize?}/{from?}")]
public IHttpActionResult Product(Site site, int start = 1, int pageSize = 100, long? fromLastUpdated = null)
{
    if (fromLastUpdated.HasValue)
    {
        var ticks = fromLastUpdated.Value;
        var time = new TimeSpan(fromLastUpdated);
        var dateTime = new DateTime() + time;
        // ...
    }
    return ...
}

Answer 2

您可以使用以下路线调用 v1 / Product / 2/1/1000 / 2016-11-17T01：37：57.4700000 。模型绑定将正常工作。

或者您可以定义自定义模型装订器：

public class DateTimeModelBinder : System.Web.Http.ModelBinding.IModelBinder
{
    public bool BindModel(HttpActionContext actionContext, System.Web.Http.ModelBinding.ModelBindingContext bindingContext)
    {
        if (bindingContext.ModelType != typeof(DateTime?)) return false;

        long result;

        if  (!long.TryParse(actionContext.RequestContext.RouteData.Values["from"].ToString(), out result)) 
            return false;

        bindingContext.Model = new DateTime(result);

        return bindingContext.ModelState.IsValid;
    }
}

[System.Web.Http.HttpGet]
[Route("api/v1/Product/{site}/{start?}/{pageSize?}/{from?}")]
public IHttpActionResult Product(Site site, 
                                 int start = 1, 
                                 int pageSize = 100,
                                 [System.Web.Http.ModelBinding.ModelBinderAttribute(typeof(DateTimeModelBinder))] DateTime? fromLastUpdated = null)   
{
    // your code
}

将WebApi路由参数中的刻度绑定到DateTime

2 个答案: