一、新建.net standard类库
二、修改.csproj项目文件
打开项目文件
修改TargetFramework为TargetFrameworks;注意:多了个s;增加framework版本;
然后保存;刷新项目;
三、然后项目依赖项会出来Framework和Core的版本
四、读取配置文件
#if NETFRAMEWORK
using System.Configuration;
#else
using Microsoft.Extensions.Configuration;
#endif
using System;
using System.IO;
namespace OMApiLibrary.Utils
{
public class ConfigHelper
{
public static string GetSectionValue(string key)
{
#if NETFRAMEWORK
var value = ConfigurationManager.AppSettings[key];
return value;
#else
IConfiguration _configuration;
var fileName = "appsettings.json";
var directory = AppContext.BaseDirectory;
directory = directory.Replace("\\", "/");
var filePath = $"{directory}{fileName}";
if (!File.Exists(filePath))
{
var length = directory.IndexOf("/bin");
filePath = $"{directory.Substring(0, length)}/{fileName}";
}
var builder = new ConfigurationBuilder()
.AddJsonFile(filePath, false, true);
_configuration = builder.Build();
return _configuration.GetSection(key).Value;
#endif
}
}
}