.NETCore获取配置文件内容

using Microsoft.Aspnetcore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Configuration.JSON;
using System;
using System.Collections.Generic;
using System.Text;

namespace Common
{
    public class AppSettings
    {
        public static IConfiguration Configuration { get; set; }

        public static void Initial(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        /// <summary>
        /// 封装要操作的字符
        /// </summary>
        /// <param name="sections"></param>
        /// <returns></returns>
        public static string app(params string[] sections)
        {
            try
            {
                var val = string.Empty;
                for (int i = 0; i < sections.Length; i++)
                {
                    val += sections[i] + ":";
                }

                return Configuration[val.TrimEnd(':')];
            }
            catch (Exception)
            {
                return "";
            }
        }
    }
}

public Startup(IConfiguration configuration, IWEBHostEnvironment env)
{
    AppSettings.Initial(configuration);
}