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  • .NET Core 控制台程序读 appsettings.json 、注依赖、配日志、设 IOptions

    .NET Core 控制台程序没有 ASP.NET Core 的 IWebHostBuilder 与 Startup.cs ,那要读 appsettings.json、注依赖、配日志、设 IOptions 该怎么办呢?因为这些操作与 ASP.NET Core 无依赖,所以可以自己动手,轻松搞定。

    1、读 appsettings.json ,ConfigurationBuilder 上

    var conf = new ConfigurationBuilder()
       .SetBasePath(Directory.GetCurrentDirectory())
       .AddJsonFile("appsettings.json", true, true)
       .AddJsonFile("appsettings.Development.json", true, true)
       .Build();
    需要安装 nuget 包 Microsoft.Extensions.Configuration 、Microsoft.Extensions.Configuration.FileExtensions 、Microsoft.Extensions.Configuration.Json

    2、注依赖,IServiceCollection + IServiceProvider 一起来

    IServiceCollection services = new ServiceCollection();//...services.AddSingleton();
    IServiceProvider serviceProvider = services.BuildServiceProvider();var cosClient = serviceProvider.GetService();
    需要安装 nuget 包 Microsoft.Extensions.DependencyInjection

    3、配日志, AddLogging 与 ILoggingBuilder 肩并肩

    services.AddLogging(builder => builder    
       .AddConfiguration(conf.GetSection("Logging"))
       .AddConsole());
    需要安装 nuget 包 Microsoft.Extensions.Logging 、Microsoft.Extensions.Logging.Configuration 、Microsoft.Extensions.Logging.Console

    4、设IOptions,AddOptions() 与 Configure 齐步走

    services.AddOptions();
    services.Configure(conf.GetSection("cosClient"));
    需要安装 nuget 包 Microsoft.Extensions.Options 与 Microsoft.Extensions.Options.ConfigurationExtensions

    完整代码:

    class Program
    {    
         static async Task Main(string[] args)
       {        var conf = new ConfigurationBuilder()
               .SetBasePath(Directory.GetCurrentDirectory())
               .AddJsonFile("appsettings.json", true, true)
               .AddJsonFile("appsettings.Development.json", true, true)
               .Build();

    IServiceCollection services = new ServiceCollection();
           services.AddLogging(builder => builder
               .AddConfiguration(conf.GetSection("Logging"))
               .AddConsole());
           services.AddOptions();
           services.Configure(conf.GetSection("cosClient"));
           services.AddSingleton();

    IServiceProvider serviceProvider = services.BuildServiceProvider();    
         var cosClient = serviceProvider.GetService();
       }
    }

    作者:dotNET跨平台
    来源:CSDN
    原文:https://blog.csdn.net/sD7O95O/article/details/78694739
    版权声明:本文为博主原创文章,转载请附上博文链接!

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  • 原文地址:https://www.cnblogs.com/littlewrong/p/10709586.html
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