WebApi 通过拦截器设置特定的返回格式


  

public class ActionFilter : ActionFilterAttribute

         ///

        /// Action执行之后由MVC框架调用
        /// 
/// public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext) { var requestUrl = actionExecutedContext.Request.RequestUri.AbsolutePath; if (requestUrl.Equals("/api/restful/order") && actionExecutedContext.Response != null && actionExecutedContext.Response.StatusCode == HttpStatusCode.OK) {
        //获取原始返回结果 var datastr = actionExecutedContext.ActionContext.Response.Content.ReadAsAsync().Result;
//定义需要返回的格式类型 var responseModel = new ResponseModel() { errormsg = "", requestId = ((Titan.Api.Web.Outside.RESTful.Model.ExtApiResultBase)datastr).RequestId }; HttpResponseMessage result = new HttpResponseMessage { Content = new StringContent(JsonConvert.SerializeObject(responseModel), Encoding.GetEncoding("UTF-8"), "application/json") }; actionExecutedContext.Response = result; } base.OnActionExecuted(actionExecutedContext); }  
}

最后需要在Global中配置     config.Filters.Add(new ActionFilter());

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