.net 5读取appsetting.json

最新推荐文章于 2024-11-20 14:35:00 发布

原创最新推荐文章于 2024-11-20 14:35:00 发布 · 745 阅读

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本文介绍了一个使用C#实现的应用程序设置单例管理器，它通过锁机制确保实例唯一，并利用.NET配置API读取appsettings.json文件。

public class AppSetting
{
private static readonly object objLock = new object();
private static AppSetting instance = null;

    private IConfigurationRoot Config { get; }

    private AppSetting()
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
        Config = builder.Build();
    }

    public static AppSetting GetInstance()
    {
        if (instance == null)
        {
            lock (objLock)
            {
                if (instance == null)
                {
                    instance = new AppSetting();
                }
            }
        }

        return instance;
    }

    public static string GetConfig(string name)
    {
        return GetInstance().Config.GetSection(name).Value;
    }
}

引用报错添加nuget包
Microsoft.Extensions.Configuration

Microsoft.Extensions.Configuration.FileExtensions

Microsoft.Extensions.Configuration.Json