VS2019 自定义项目模板的实现方法

namespace $safeprojectname$
{
     /// <summary>
    /// 作者:$username$
    /// 时间:$time$
    /// 机器名:$machinename$
    /// 项目名:$projectname$
    /// </summary>
    public class program
    {
        public static void main(string[] args)
        {
            createhostbuilder(args).build().run();
        }
        public static ihostbuilder createhostbuilder(string[] args) =>
            host.createdefaultbuilder(args)
                .configurewebhostdefaults(webbuilder =>
                {
                    webbuilder.usestartup<startup>();
                });
    }
}

public void configureservices(iservicecollection services)
{
    //注册swagger生成器，定义一个和多个swagger 文档
    services.addswaggergen(c =>
    {
        c.swaggerdoc("v1", new openapiinfo { title = "$safeprojectname$ api", version = "v1" });
        // other
    });
}

<vstemplate version="3.0.0" xmlns="http://schemas.microsoft.com/developer/vstemplate/2005" type="project">
  <templatedata>
    <!--项目名称-->
    <name>apitemplate</name>
    <!--项目描述-->
    <description>基础api模板：支持swaggerui、认证、性能监控等基础功能</description>
    <!--项目类型-->
    <projecttype>csharp</projecttype>
    <projectsubtype>
    </projectsubtype>
    <sortorder>1000</sortorder>
    <!--指定在实例化项目时是否创建包含文件夹。-->
    <createnewfolder>true</createnewfolder>
    <!--缺省名称-->
    <defaultname>apitemplate</defaultname>
    <providedefaultname>true</providedefaultname>
    <locationfield>enabled</locationfield>
    <enablelocationbrowsebutton>true</enablelocationbrowsebutton>
    <createinplace>true</createinplace>
    <!--语言标签-->
    <languagetag>csharp</languagetag>
    <languagetag>javascript</languagetag>
    <!--平台标签-->
    <platformtag>windows</platformtag>
    <platformtag>linux</platformtag>
    <!--项目标签-->
    <projecttypetag>web</projecttypetag>
    <!--图标-->
    <icon>__templateicon.png</icon>
    <previewimage>__previewimage.png</previewimage>
  </templatedata>
  <templatecontent>
    <project targetfilename="apiprojecttemplates.csproj" file="apiprojecttemplates.csproj" replaceparameters="true">
      <folder name="properties" targetfoldername="properties">
        <projectitem replaceparameters="true" targetfilename="launchsettings.json">launchsettings.json</projectitem>
      </folder>
      <folder name="controllers" targetfoldername="controllers">
        <projectitem replaceparameters="true" targetfilename="weatherforecastcontroller.cs">weatherforecastcontroller.cs</projectitem>
      </folder>
      <projectitem replaceparameters="true" targetfilename="appsettings.json">appsettings.json</projectitem>
      <projectitem replaceparameters="true" targetfilename="appsettings.development.json">appsettings.development.json</projectitem>
      <projectitem replaceparameters="true" targetfilename="jwtsetting.cs">jwtsetting.cs</projectitem>
      <projectitem replaceparameters="true" targetfilename="program.cs">program.cs</projectitem>
      <projectitem replaceparameters="true" targetfilename="startup.cs">startup.cs</projectitem>
      <projectitem replaceparameters="true" targetfilename="weatherforecast.cs">weatherforecast.cs</projectitem>
    </project>
  </templatecontent>
</vstemplate>