为什么要用Https就不说了。

第一步：创建自签名的证书。在Windows下开启PowerShell，将以下文字粘贴进去：

# setup certificate properties including the commonName (DNSName) property for Chrome 58+$certificate = New-SelfSignedCertificate `    -Subject 改成自己想要的标题不要带乱七八糟的符号（安装证书的时候会显示这个） `    -DnsName 友好域名 `    -KeyAlgorithm RSA `    -KeyLength 2048 `    -NotBefore (Get-Date) `    -NotAfter (Get-Date).AddYears(2) `    -CertStoreLocation "cert:CurrentUser\My" `    -FriendlyName "证书的友好名称，在IIS指定的时候显示Certificate for .NET Core" `    -HashAlgorithm SHA256 `    -KeyUsage DigitalSignature, KeyEncipherment, DataEncipherment `    -TextExtension @("2.5.29.37={text}1.3.6.1.5.5.7.3.1") $certificatePath = 'Cert:\CurrentUser\My\' + ($certificate.ThumbPrint)  # create temporary certificate path$tmpPath = "C:\tmp"If(!(test-path $tmpPath)){New-Item -ItemType Directory -Force -Path $tmpPath}# set certificate password here$pfxPassword = ConvertTo-SecureString -String "证书的密码" -Force -AsPlainText$pfxFilePath = "c:\tmp\证书的名称.pfx"$cerFilePath = "c:\tmp\证书的名称.cer"# create pfx certificateExport-PfxCertificate -Cert $certificatePath -FilePath $pfxFilePath -Password $pfxPasswordExport-Certificate -Cert $certificatePath -FilePath $cerFilePath# import the pfx certificateImport-PfxCertificate -FilePath $pfxFilePath Cert:\LocalMachine\My -Password $pfxPassword -Exportable# trust the certificate by importing the pfx certificate into your trusted rootImport-Certificate -FilePath $cerFilePath -CertStoreLocation Cert:\CurrentUser\Root# optionally delete the physical certificates (don’t delete the pfx file as you need to copy this to your app directory)# Remove-Item $pfxFilePathRemove-Item $cerFilePath

　　把汉字部分修改成你想要的，然后运行一下，就可以在C：\tmp下面找到你的证书了,一般把它放在网站根目录下即可。

二、站点配置（ASP.NET Core 2.1）

* public void ConfigureServices(IServiceCollection services) 部分：

services.AddMvc(options =>

{

options.Filters.Add(new RequireHttpsAttribute());//所有请求都使用HTTPS

})

* public void Configure(IApplicationBuilder app, IHostingEnvironment env) 部分：

var options = new RewriteOptions().AddRedirectToHttps();

app.UseRewriter(options);

app.UseHttpsRedirection();

三、IIS配置：

经过这几步，你的网站就变成Https的了。