网页API - 如何直接从OnActionExecuting过滤器停止Web管道 [英] Web Api - how to stop the web pipeline directly from an OnActionExecuting Filter

问题描述

我有一个pre-动作的web API钩子，将检查ModelState.IsValid。如果ModelState中是无效的，我不想要执行的动作，只是立即返回我的消息。我这样做究竟怎么办？

 公共类ValidateModelStateAttribute：ActionFilterAttribute
{
    公共覆盖无效OnActionExecuting（System.Web.Http.Controllers.HttpActionContext ActionContext中）{
        如果（！actionContext.ModelState.IsValid）
        {
            VAR味精= actionContext.Request.CreateErrorResponse（的HTTPStatus code.BadRequest，actionContext.ModelState）;
            // 怎么办？
        }
        base.OnActionExecuting（ActionContext中）;
    }
}
 

解决方案

设置Response.Result。如果结果不为空，将不会执行该操作。确切的语法逃避我的权利，但它是为

一样简单

 如果（actionContext.ModelState.IsValid == FALSE）
{
       VAR响应= actionContext.Request.CreateErrorResponse（...）;
       actionContext.Response =响应;
}
 

I have a pre-action web api hook that will check ModelState.IsValid. If the ModelState is not valid I do not want to execute the action and just return my message immediately. How exactly do I do this?

public class ValidateModelStateAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(System.Web.Http.Controllers.HttpActionContext actionContext) {
        if (!actionContext.ModelState.IsValid)
        {
            var msg = actionContext.Request.CreateErrorResponse(HttpStatusCode.BadRequest, actionContext.ModelState);
            // Now What?
        }
        base.OnActionExecuting(actionContext);
    }
}

解决方案

set the Response.Result. If the result is not null it will not execute the action. the exact syntax is escaping me right now, but it's as simple as

if(actionContext.ModelState.IsValid == false)
{
       var response = actionContext.Request.CreateErrorResponse(...);
       actionContext.Response = response;
}   

这篇关于网页API - 如何直接从OnActionExecuting过滤器停止Web管道的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！