我想从配置文件只读一个连接字符串,因此
将一个名称为“AppAettings.json”的文件添加到我的项目中,并在其上添加此内容：
将一个名称为“AppAettings.json”的文件添加到我的项目中,并在其上添加此内容：
{
"ConnectionStrings": {
"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=aspnet-
WebApplica71d622;Trusted_Connection=True;MultipleActiveResultSets=true"
},"Logging": {
"IncludeScopes": false,"LogLevel": {
"Default": "Debug","System": "Information","Microsoft": "Information"
}
}
}
在asp.net我用这个：
var temp=ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
现在我如何读取c#中的“DefaultConnection”,并将其存储在.net核心中的字符串变量中？
解决方法
您可以使用GetConnectionString扩展方法：
string conString = Microsoft .Extensions .Configuration .ConfigurationExtensions .GetConnectionString(this.Configuration,"DefaultConnection"); System.Console.WriteLine(conString);
或使用DI的结构化类：
public class SmtpConfig
{
public string Server { get; set; }
public string User { get; set; }
public string Pass { get; set; }
public int Port { get; set; }
}
启动：
public IConfigurationRoot Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
// http://developer.telerik.com/featured/new-configuration-model-asp-net-core/
// services.Configure<SmtpConfig>(Configuration.GetSection("Smtp"));
Microsoft.Extensions.DependencyInjection.OptionsConfigurationServiceCollectionExtensions.Configure<SmtpConfig>(services,Configuration.GetSection("Smtp"));
然后在家庭控制器中：
public class HomeController : Controller
{
public SmtpConfig SmtpConfig { get; }
public HomeController(Microsoft.Extensions.Options.IOptions<SmtpConfig> smtpConfig)
{
SmtpConfig = smtpConfig.Value;
} //Action Controller
public IActionResult Index()
{
System.Console.WriteLine(SmtpConfig);
return View();
}
这在appsettings.json：
"ConnectionStrings": {
"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=aspnet-WebApplica71d622;Trusted_Connection=True;MultipleActiveResultSets=true"
},"Smtp": {
"Server": "0.0.0.1","User": "user@company.com","Pass": "123456789","Port": "25"
}
