public Dictionary <string, string> Get()
{
System.IO.File.WriteAllTextAsync("./Test.txt", "Hello");//当前类文件所在的目录
return(new Dictionary <string, string>
{
{ "Directory.GetCurrentDirectory()", Directory.GetCurrentDirectory() }, //当前类文件所在的目录
{ "AppDomain.CurrentDomain.BaseDirectory", AppDomain.CurrentDomain.BaseDirectory }, //当前执行程序集（dll或exe）所在目录
{ "IWebHostEnvironment", _env.AsJsonStr() }
});
}