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  • .Net Core Web应用加载读取Json配置文件

    ⒈添加Json配置文件并将“复制到输出目录”属性设置为“始终复制”

    1 {
    2   "Logging": {
    3     "LogLevel": {
    4       "Default": "Warning"
    5     }
    6   },
    7   "AllowedHosts": "*"
    8 }
    1 {
    2   "ConnectionStrings": {
    3     "StudyConnStr": "Data Source=.;Initial Catalog=Study;User ID=sa;Password=admin"
    4   }
    5 }

    ⒉在Program中加载配置文件

     1 using System;
     2 using System.Collections.Generic;
     3 using System.IO;
     4 using System.Linq;
     5 using System.Threading.Tasks;
     6 using Microsoft.AspNetCore;
     7 using Microsoft.AspNetCore.Hosting;
     8 using Microsoft.Extensions.Configuration;
     9 using Microsoft.Extensions.Logging;
    10 
    11 namespace EF_SqlServer
    12 {
    13     public class Program
    14     {
    15         public static void Main(string[] args)
    16         {
    17             CreateWebHostBuilder(args).Build().Run();
    18 
    19         }
    20 
    21         public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
    22             WebHost.CreateDefaultBuilder(args)
    23             .ConfigureAppConfiguration((hostingContext, config) =>
    24             {
    25                 config.SetBasePath(Directory.GetCurrentDirectory());
    26                 config.AddJsonFile("//Config//dbconfig.json", true, true);
    27                 config.AddJsonFile("appsettings.json", true, true);
    28             }).UseStartup<Startup>();
    29     }
    30 }

    ⒊使用配置文件中的相关属性

     1 using System;
     2 using System.Collections.Generic;
     3 using System.Linq;
     4 using System.Threading.Tasks;
     5 using Microsoft.AspNetCore.Builder;
     6 using Microsoft.AspNetCore.Hosting;
     7 using Microsoft.AspNetCore.Http;
     8 using Microsoft.AspNetCore.HttpsPolicy;
     9 using Microsoft.AspNetCore.Mvc;
    10 using Microsoft.Extensions.Configuration;
    11 using Microsoft.Extensions.DependencyInjection;
    12 
    13 namespace EF_SqlServer
    14 {
    15     public class Startup
    16     {
    17         public Startup(IConfiguration configuration)
    18         {
    19             Configuration = configuration;
    20         }
    21 
    22         public IConfiguration Configuration { get; }
    23 
    24         // This method gets called by the runtime. Use this method to add services to the container.
    25         public void ConfigureServices(IServiceCollection services)
    26         {
    27             services.Configure<CookiePolicyOptions>(options =>
    28             {
    29                 // This lambda determines whether user consent for non-essential cookies is needed for a given request.
    30                 options.CheckConsentNeeded = context => true;
    31                 options.MinimumSameSitePolicy = SameSiteMode.None;
    32             });
    33             string dbConn = Configuration.GetSection("ConnectionStrings").GetSection("StudyConnStr").Value;
    34             string logDef = Configuration["Logging:LogLevel:Default"];
    35             services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
    36         }
    37 
    38         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    39         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    40         {
    41             if (env.IsDevelopment())
    42             {
    43                 app.UseDeveloperExceptionPage();
    44             }
    45             else
    46             {
    47                 app.UseExceptionHandler("/Home/Error");
    48                 // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    49                 app.UseHsts();
    50             }
    51 
    52             app.UseHttpsRedirection();
    53             app.UseStaticFiles();
    54             app.UseCookiePolicy();
    55 
    56             app.UseMvc(routes =>
    57             {
    58                 routes.MapRoute(
    59                     name: "default",
    60                     template: "{controller=Home}/{action=Index}/{id?}");
    61             });
    62         }
    63     }
    64 }
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  • 原文地址:https://www.cnblogs.com/fanqisoft/p/10806862.html
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