asp.net core mvc中自定义ActionResult

在GitHub上有个项目，本来是作为自己研究学习.net core的Demo，没想到很多同学在看，还给了很多星，所以觉得应该升成3.0，整理一下，写成博分享给学习.net core的同学们。

项目名称：Asp.NetCoreExperiment

项目地址：https://github.com/axzxs2001/Asp.NetCoreExperiment

asp.net core mvc的模板中返回前端时可以用IActionResult的子类，来区分不同的返回内容，那怎么来实现自定义的ActionResult呢？

github代码如下：

https://github.com/axzxs2001/Asp.NetCoreExperiment/tree/master/Asp.NetCoreExperiment/Common/YamlResultDemo

首先引用一个三方包

PM> Install-Package YamlDotNet

YamlResult.cs

     /// <summary>

     /// YamlResul

     /// </summary>

     public class YamlResult : ActionResult

     {

         /// <summary>

         /// Yaml值

         /// </summary>

         public object Value { get; private set; }

         /// <summary>

         /// 构造

         /// </summary>

         /// <param name="value"></param>

         public YamlResult(object value)

         {

             Value = value;

         }

         /// <summary>

         /// Result执行者

         /// </summary>

         /// <param name="context">上下文</param>

         /// <returns></returns>

         public override async Task ExecuteResultAsync(ActionContext context)

         {

             var services = context.HttpContext.RequestServices;

             var executor = services.GetRequiredService<IActionResultExecutor<YamlResult>>();

             await executor.ExecuteAsync(context, new YamlResult(this));

         }

     }

YamlResultExecutor.cs

     /// <summary>

     /// YamlResult执行者

     /// </summary>

     /// <typeparam name="T"></typeparam>

     public class YamlResultExecutor<T> : IActionResultExecutor<T> where T : YamlResult

     {

         /// <summary>

         /// 执行

         /// </summary>

         /// <param name="context">上下文</param>

         /// <param name="result">值</param>

         /// <returns></returns>

         public async Task ExecuteAsync(ActionContext context, T result)

         {

             var serialize = new YamlDotNet.Serialization.Serializer();

             var valueString = serialize.Serialize(result.Value);

             // 把对象转成yaml字符串，用Response返回

             context.HttpContext.Response.ContentType = "Content-Type: text/html; charset=utf-8";

             await context.HttpContext.Response.WriteAsync(valueString);

         }

     }

TestController.cs中调用代码

        [HttpGet]

        public IActionResult Get()

        {

            return new YamlResult(new

            {

                Data = new { a = , B = "bbb", C = DateTime.Now, d = new string[] { "a", "b", "c" } },

                Status = true,

                Message = "成功"

            });

        }

运行结果：

巴特西

asp.net core mvc中自定义ActionResult

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