ASP.NET Core 5.0自定义中间件执行顺序

最新推荐文章于 2024-09-06 16:39:10 发布

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最新推荐文章于 2024-09-06 16:39:10 发布

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分类专栏： asp.net core 文章标签： asp.net core 中间件 c# 异步await

本文链接：https://blog.youkuaiyun.com/zythy/article/details/120367247

ASP.NET Core中可以自定义中间件对Request或Response进行额外处理。

下文代码已ASP.NET Core MVC为测试环境。

 public class Msg
    {        
        public static string Message = " TestString: ";
    }

    public class M1
    {
        private RequestDelegate nextDelegate;
        public M1(RequestDelegate next)
        {
            nextDelegate = next;
        }

        public async Task Invoke(HttpContext httpContext)
        {
            
            Msg.Message += " M1_1 ";//1
            await nextDelegate.Invoke(httpContext);//2
            Msg.Message += " M1_2 ";//3
            await httpContext.Response.WriteAsync(" M1 ");//4
            Msg.Message += " M1_3 ";//5
            await httpContext.Response.WriteAsync("\n\r"+ Msg.Message);//6
        }
    }

    public class M2
    {
        private RequestDelegate nextDelegate;
        public M2(RequestDelegate next) => nextDelegate = next;

        public async Task Invoke(HttpContext httpContext)
        {