ASP.NET Core WebApi 返回統一格式參數

業務場景：

業務需求要求，須要對 WebApi 接口服務統一返回參數，也就是把實際的結果用必定的格式包裹起來，好比下面格式：

{
    "response":{ "code":200, "msg":"Remote service error", "result":"" } }

具體實現：

using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.Filters; public class WebApiResultMiddleware : ActionFilterAttribute { public override void OnResultExecuting(ResultExecutingContext context) { //根據實際需求進行具體實現 if (context.Result is ObjectResult) { var objectResult = context.Result as ObjectResult; if (objectResult.Value == null) { context.Result = new ObjectResult(new { code = 404, sub_msg = "未找到資源", msg = "" }); } else { context.Result = new ObjectResult(new { code = 200, msg = "", result = objectResult.Value }); } } else if (context.Result is EmptyResult) { context.Result = new ObjectResult(new { code = 404, sub_msg = "未找到資源", msg = "" }); } else if (context.Result is ContentResult) { context.Result = new ObjectResult(new { code = 200, msg = "", result= (context.Result as ContentResult).Content }); } else if (context.Result is StatusCodeResult) { context.Result = new ObjectResult(new { code = (context.Result as StatusCodeResult).StatusCode, sub_msg = "", msg = "" }); } } }

Startup添加對應配置：

public void ConfigureServices(IServiceCollection services) { services.AddMvc(options => { options.Filters.Add(typeof(WebApiResultMiddleware)); options.RespectBrowserAcceptHeader = true; }); }