/// <summary>
/// 使用默认环境配置，appsettings.EnvironmentName.json
/// </summary>
/// <param name="env">环境信息</param>
/// <param name="isOptional">文件必须存在</param>
/// <param name="reloadOnChange">监听文件更改</param>
/// <returns></returns>
public static IConfigurationRoot UseDefaultAppsettings(this IHostingEnvironment env, bool isOptional = true,
bool reloadOnChange = true)
{
return(env.AddAppsettings($"appsettings.{env.EnvironmentName}.json", isOptional, reloadOnChange)
.Build());
}
