ASP.NET CORE讀取appsettings.json的配置

如何在appsettings.json配置應用程序設置，微軟給出的方法：https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration

下面是個人作法：

由於我創建的是空項目什麼都沒有，好多東西都須要新建和引用，新建appsettings.json文件，而後添加一個AppSettings字段，包含配置和值

 

在Models文件夾下建立一個AppSettingsModel.cs

 

NuGet包管理器引用或者在project.json寫入下面這些包

    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0"

 

而後在Startup.cs中配置

    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath)
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);

            Configuration = builder.Build();
        }
        public IConfigurationRoot Configuration { get; }
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
            services.AddOptions();
            services.Configure<AppSettingsModel>(Configuration.GetSection("AppSettings"));
            
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
　　　　　　　　//這裏的代碼跟主題無關
        }
    }

 

而後修改一下Controller

    public class BasicController : Controller
    {
        /// <summary>
        /// 獲取AccessToken
        /// </summary>
        /// <returns></returns>
        public string GetAccessToken(IOptions<AppSettingsModel> settings)
        {
            string accessToken = AccessTokenContainer.TryGetAccessToken(settings.Value.WeixinAppId, settings.Value.WeixinAppSecret);
            return accessToken;
        }
    }

 

這就算是配置成功了，也能夠看此博主的文章：http://blchen.com/asp-net-read-config-from-appsettings-json/