业务场景:
业务需求要求,需要对 WebApi 接口服务统一返回参数,也就是把实际的结果用一定的格式包裹起来,比如下面格式:
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| { "response":{ "code":200, "msg":"Remote service error", "result":"" } }
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具体实现:
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| using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.Filters;
public class WebApiResultMiddleware : ActionFilterAttribute { public override void OnResultExecuting(ResultExecutingContext context) { if (context.Result is ObjectResult) { var objectResult = context.Result as ObjectResult; if (objectResult.Value == null) { context.Result = new ObjectResult(new { code = 404, sub_msg = "未找到资源", 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 = "未找到资源", 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 = "" }); } } }
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Startup
添加对应配置:
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| public void ConfigureServices(IServiceCollection services) { services.AddMvc(options => { options.Filters.Add(typeof(WebApiResultMiddleware)); options.RespectBrowserAcceptHeader = true; }); }
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