摘要

在学习asp.net core的时候，尝试在控制台，或者页面上输出中文，会出现乱码的问题。

问题重现

新建控制台和站点

public class Program    {        public static void Main(string[] args)        {                       Console.WriteLine("您好，北京欢迎你");            Console.Read();        }    }

站点

public class Startup    {        // This method gets called by the runtime. Use this method to add services to the container.        // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940        public void ConfigureServices(IServiceCollection services)        {        }        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)        {            loggerFactory.AddConsole();            if (env.IsDevelopment())            {                app.UseDeveloperExceptionPage();            }            app.Run(async (context) =>            {                await context.Response.WriteAsync("您好，北京欢迎你");            });        }    }

那么我们获取“GB2312”编码，然后对其编码呢？

public static void Main(string[] args)        {            Console.WriteLine("您好，北京欢迎你");            try            {                Console.WriteLine(Encoding.GetEncoding("GB2312"));            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }            Console.Read();        }    }

'GB2312' is not a supported encoding name. For information on defining a custom encoding, see the documentation for the Encoding.RegisterProvider method.

Parameter name: name

上面的大概意思是Encoding 不支持GB2312编码，需要使用Encoding.RegisterProvider方法进行注册Provider。

try            {                Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);                Console.WriteLine(Encoding.GetEncoding("GB2312"));            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }            Console.Read();

CodePagesEncodingProvider在包System.Text.Encoding.CodePages中

"System.Text.Encoding.CodePages/4.0.1": {        "type": "package",        "dependencies": {          "Microsoft.NETCore.Platforms": "1.0.1",          "System.Collections": "4.0.11",          "System.Globalization": "4.0.11",          "System.IO": "4.1.0",          "System.Reflection": "4.1.0",          "System.Resources.ResourceManager": "4.0.1",          "System.Runtime": "4.1.0",          "System.Runtime.Extensions": "4.1.0",          "System.Runtime.Handles": "4.0.1",          "System.Runtime.InteropServices": "4.1.0",          "System.Text.Encoding": "4.0.11",          "System.Threading": "4.0.11"        },        "compile": {          "ref/netstandard1.3/System.Text.Encoding.CodePages.dll": {}        },        "runtimeTargets": {          "runtimes/unix/lib/netstandard1.3/System.Text.Encoding.CodePages.dll": {            "assetType": "runtime",            "rid": "unix"          },          "runtimes/win/lib/netstandard1.3/System.Text.Encoding.CodePages.dll": {            "assetType": "runtime",            "rid": "win"          }        }      },

好了，我们修改下代码，先注册，然后输出中文

try            {                Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);                Console.WriteLine(Encoding.GetEncoding("GB2312"));                Console.WriteLine("您好，北京欢迎你");            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }

结语

所以在页面上输出，或者在控制台输出中文的时候，要注意进行注册Provider。

参考