.Net Core控制台应用加载读取Json配置文件

⒈添加依赖

Microsoft.Extensions.Configuration

Microsoft.Extensions.Configuration.FileExtensions

Microsoft.Extensions.Configuration.Json

⒉在项目中添加Json配置文件并将其复制到输出目录属性设置为“始终复制”

1 {2 "ConnectionStrings": {3"StudyConnStr": "Data Source=.;Initial Catalog=Study;User ID=sa;Password=admin"4 }5 }

⒊在代码中加载配置文件并读取相应内容

1 using Microsoft.Extensions.Configuration; 2 using System; 3 using System.IO; 4 5 namespace Config_Test 6 { 7class Program 8{ 9 static void Main(string[] args)10 {11 var build = new ConfigurationBuilder();12 build.SetBasePath(Directory.GetCurrentDirectory());13 build.AddJsonFile("//Config//dbconfig.json", true, true);14 var dbConfig = build.Build();15 string dbConn = dbConfig.GetSection("ConnectionStrings").GetSection("StudyConnStr").Value;16 Console.WriteLine($"db连接字符串：{dbConfig["ConnectionStrings:StudyConnStr"]}");17 Console.WriteLine($"db连接字符串：{dbConn}");18 Console.ReadKey();19 }20}21 }