.net core 读取 appsetting.json

文件 appsetting.json 

{
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Warning"
}
},
"ConnectionStrings": {
"DefaultConnection": "User ID=sa;Password=123@abcd;Initial Catalog=CommonPower;Data Source=AFOCL-703281007\\SQLEXPRESS",
"ProviderName": "SqlServer" //驱动提供者(数据库品牌) //sqlserver、oracle、mysql
},
//"AppSettings": {
// "ConnectionString": "Server=10.0.0.1;database=HasngCadreFile;uid=sa;pwd=123-abc", //数据库连接字符串
// //"ConnectionString": "Server=192.168.1.250;database=HasngCadreFile;uid=sa;pwd=123-abc", //数据库连接字符串
// "ProviderName": "SqlServer" //驱动提供者(数据库品牌) //sqlserver、oracle、mysql
//},
"RedisConfig": {
"Connection": "10.0.0.1:6379,abortConnect=false,password=123456"
//"Connection": "192.168.1.250:6379,abortConnect=false,password=123456"
},
"ServiceAddress": {
"Address": "http://10.0.0.1:5052",
//"Address": "http://192.168.1.250:5052",
"IsOpenOnlyUser": false, //一个账号多地点登陆 true,false
"PageTimeOut": 20 //数字 （分钟）
}
}

2.读取配置文件方式

            DbHelper.ConnectionString = Configuration.GetConnectionString("DefaultConnection");
            DbHelper.DatabaseTypeEnumParse(Configuration.GetConnectionString("ProviderName"));

            //DbHelper.ConnectionString = Configuration.GetSection("AppSettings").GetSection("ConnectionString").Value;
            //DbHelper.DatabaseTypeEnumParse(Configuration.GetSection("AppSettings").GetSection("ProviderName").Value);
            DbHelper.DbParmChar = DbFactory.CreateDbParmCharacter();
            //配置缓存信息
            CacheHelper.ConnectionString = Configuration.GetSection("RedisConfig").GetSection("Connection").Value;

            //读取守护程序地址
            GlobalStatus.Address = Configuration.GetSection("ServiceAddress").GetSection("Address").Value;
            //读取页面过期时间（分钟）
            GlobalStatus.PageTimeOut = Convert.ToInt32(Configuration.GetSection("ServiceAddress").GetSection("PageTimeOut").Value);
            //读取是否开启单用户登陆认证
            GlobalStatus.IsOpenOnlyUser = Convert.ToBoolean(Configuration.GetSection("ServiceAddress").GetSection("IsOpenOnlyUser").Value);

3.对象方式读取配置文件节点

 public class AppSettings
    {
        /// <summary>
        /// 连接字符串
        /// </summary>
        public string ConnectionString { get; set; }
        /// <summary>
        /// 驱动提供者
        /// </summary>
        public string ProviderName { get; set; }

        public string Connection { get; set; }

        public string Address { get; set; }
        public bool IsOpenOnlyUser { get; set; }
        public string PageTimeOut { get; set; }
    }

startup.cs

public void ConfigureServices(IServiceCollection services)
{
       services.AddSingleton(Configuration);
　　　  //关键点，配置映射文件
　　　　services.Configure<AppSettings>(Configuration.GetSection("AppSettings")); services.AddMvc();

}

controller.cs

public class AccountController : Controller
{
　　AppSettings _op;

　　public AccountController(IOptions<AppSettings> op)
　　{
　　　　_op = op.Value;
　　}

}