.net core读取配置文件appsetting.json

一.引用

using Microsoft.Extensions.Configuration;

二.使用接口服务：IConfiguration

注：认真观察这个类，这已经被startup.cs自动注入了，无需手动做注入操作

控制器中要使用这个接口对象，需要在构造函数中获取它

[Route("IDCardOCR")]
    public class IDCardOCRController : ControllerBase
    {
        public IConfiguration Configuration { get; }
        public IDCardOCRController(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        [HttpGet("test")]
        public string Test()
        {
            string SecretId = Configuration.GetSection("AppConfig")["SecretId"];
            string SecretKey = Configuration.GetSection("AppConfig")["SecretKey"];
            return SecretId + ";" + SecretKey;
        }
    }

附注json内容结构：

读取数组结构的数据：

"mongo": [
    {
        "GameAngVersion": "default",
        "connectionString": "mongodb://0.0.0.0:27017",
        "databaseName": "GameEditorDefault"
    },
    {
        "GameAngVersion": "2021-SYY",
        "connectionString": "mongodb:/0.0.0.0:27017",
        "databaseName": "GameEditorSYY"
    }
]

对应的代码实体结构：

   public class MongoDbSetting
    {
        /// <summary>
        /// 游戏ID与版本号
        /// </summary>
        public string GameAngVersion { get; set; }

        /// <summary>
        /// 数据库连接串
        /// </summary>
        public string ConnectionString { get; set; }

        /// <summary>
        /// 数据库名称
        /// </summary>
        public string DatabaseName { get; set; }
    }

获取方式：

List<MongoDbSetting> list = config.GetSection("mongo").Get<List<MongoDbSetting>>()