.Net Core公用方法读取配置文件的内容

参考https://blog.csdn.net/yenange/article/details/82457761

http://www.mamicode.com/info-detail-2602438.html

  private static string GetCustomSettings(string key)
    {
        var config = new ConfigurationBuilder()
                     .AddInMemoryCollection()
                     .SetBasePath(Directory.GetCurrentDirectory())
                     .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                     .Build();

        return config.GetSection("CustomSettings").GetValue(key, string.Empty);
    }
    // 获取自定义value
    public static string WXWarningClosedTemplateID => GetCustomSettings("xxx");

二

using Microsoft.Extensions.Configuration;
using System;

  namespace ConsoleApp4
{
class Program
{
    //安装 .net core 2.1 完整包
    //install-package Microsoft.AspNetCore.All -version 2.1.0
    //注意不要超过 依赖项->SDK->Microsoft.NETCore.App 的版本，我这里是 2.1.0 
    //否则会无法正常生成和运行
    static void Main(string[] args)
    {
        var builder = new ConfigurationBuilder()
            .AddJsonFile("appsettings.json");
        var configuration = builder.Build();
        Console.WriteLine($"ServerCode:{configuration["ServerCode"]}");
        UserInfo user1 = new UserInfo();
        UserInfo user2 = new UserInfo();
        configuration.GetSection("section0").Bind(user1);
        configuration.GetSection("section1").Bind(user2);

        Console.WriteLine(user1.ToString());
        Console.WriteLine(user2.ToString());
        Console.WriteLine($"section0:UserId:{configuration["section0:UserId"]}");
        Console.Read();
    }
}

public class UserInfo
{
    public long UserId { get; set; }
    public string UserName { get; set; }

    public override string ToString()
    {
        return string.Format($"UserId:{UserId}, UserName:{UserName}");
    }
}
}