今天,我正在尝试新的 asp.net core 2.0,但使用 JSON 配置文件时遇到了一些麻烦,我没有在 IConfiguration 配置构造函数属性中注入该文件。
在 asp.net core 1.1 中,我将在 StartUp 中使用以下代码:
public static IConfigurationRoot Configuration;
Public Startup(IHostingEnvironment env) {
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appSettings.json", optional: false, reloadOnChange: true)
Configuration = builder.Build();
}
并可以从以下代码访问它:
private string _mailTo = Startup.Configuration["mailSettings:mailToAddress"];
然而,在 Core 2.0 中,它们更改为 IConfiguration 并且它已经定义了,而且我看不到任何可以在其他类中使用该配置的方法,所以我对如何继续感到有点无能为力。
启动类:
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Configuration;
using Microsoft.AspNetCore.Mvc.Formatters;
using NLog.Web;
using NLog.Extensions.Logging;
using cityInfoTestApi.Services;
namespace cityInfoTestApi
{
public class Startup
{
public IConfiguration Configuration { get; private set; }
public Startup(IConfiguration configuration, IHostingEnvironment env)
{
Configuration = configuration;
env.ConfigureNLog("nlog.config");
}
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc()
.AddMvcOptions(o => o.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter()));
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddNLog();
app.AddNLogWeb();
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseStatusCodePages();
app.UseMvc();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}
}
}
我的 json 文件:
{
"mailSetings": {
"mailToAddress": "[email protected] /cdn-cgi/l/email-protection",
"mailFromAddress": "[email protected] /cdn-cgi/l/email-protection"
}
}
我的自定义类想要使用这些设置(请注意,这是我使用核心 1.1 的方式:
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
namespace cityInfoTestApi.Services
{
public class LocalMailService : IMailService
{
private string _mailTo = Startup.Configuration["mailSettings:mailToAddress"];
private string _mailFrom = Startup.Configuration["mailSettings:mailFromAddress"];
public void Send(string subject, string message)
{
Debug.WriteLine($"Mail from {_mailFrom} to {_mailTo}, with LocalMailService");
Debug.WriteLine($"Subject: {subject}");
Debug.WriteLine($"Message: {message}");
}
}
}
任何帮助将不胜感激,干杯!