.NET Core 1.0 CentOS7 尝试(三、使用VSCode创建一个Web应用)

参考地址:https://docs.asp.net/en/latest/tutorials/your-first-mac-aspnet.html

一、使用VSCode创建一个目录FirstWebApp，File->Open Folder->Create Folder

二、初始一个基本的.NET项目

在VSCode中，Ctrl+Shift+P中没有找到这个命令，暂时没搞定，为啥？

命令:dotnet new

三、添加引用包

project.json中添加相关引用

VSCode中Ctrl+Shift+P 输入dotnet restore 单击加载恢复当前项目依赖包

四、添加Startup.cs文件

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions;
 
namespace FirstWebApp
{
    public class Startup
    {
        public void Configure(IApplicationBuilder app)
        {
            app.Run(async(context)=>
            {
                await context.Response.WriteAsync("Hello World!");
            });
        }
    }
}

Program.cs

using System;
using System.IO;
using Microsoft.AspNetCore.Hosting;
 
namespace FirstWebApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var host = new WebHostBuilder()
            .UseKestrel()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseStartup<Startup>()
            .Build();
 
            host.Run();
        }
    }
}

五、最终结果

VSCode中F5执行发现报错

    Unhandled Exception: System.AggregateException: One or more errors occurred. (Error -98 EADDRINUSE address already in use) --->      Microsoft.AspNetCore.Server.Kestrel.Networking.UvException: Error -98 EADDRINUSE address already in use

 如果发现这个错误，暂时不知道有啥解决方案，临时对策就是在CentOS 系统管理工具中，找到System Monitor 在Processes 干掉dotnet的全部进程。

    命令跑如下：

   

[sonny@bogon FirstWebApp]$ dotnet run
Project FirstWebApp (.NETCoreApp,Version=v1.) was previously compiled. Skipping compilation.
Hosting environment: Production
Content root path: /home/sonny/DotnetProject/FirstWebApp
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.

六、结果

浏览器中访问localhost:5000 就能看到Hello World！