详解ASP.NET Core WebApi 返回统一格式参数

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：

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

具体实现：

using microsoft.aspnetcore.mvc;
using microsoft.aspnetcore.mvc.filters;

public class webapiresultmiddleware : actionfilterattribute
{
  public override void onresultexecuting(resultexecutingcontext context)
  {
    //根据实际需求进行具体实现
    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 = "" });
    }
  }
}

startup添加对应配置：

public void configureservices(iservicecollection services)
{
  services.addmvc(options =>
  {
    options.filters.add(typeof(webapiresultmiddleware));
    options.respectbrowseracceptheader = true;
  });
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。