第二十六节：扩展如何在控制台中使用HttpClientFactory、读取配置文件、数据保护、注入类

 1           {
 2                 var serviceCollection = new ServiceCollection();
 3                 serviceCollection.AddHttpClient();
 4                 var serviceProvider = serviceCollection.BuildServiceProvider();
 5                 //var serviceProvider = new ServiceCollection().AddHttpClient().BuildServiceProvider();  //等价于以上三句话
 6                 IHttpClientFactory httpClientFactory = serviceProvider.GetService();
 7 
 8                 //下面是使用
 9                 string url2 = "http://XXX:8055/Home/SendAllMsg";
10                 var client = httpClientFactory.CreateClient();
11                 var content = new StringContent("msg=123", Encoding.UTF8, "application/x-www-form-urlencoded");
12                 var response = client.PostAsync(url2, content).Result;
13                 string result = "";
14                 if (response.IsSuccessStatusCode)
15                 {
16                     result = response.Content.ReadAsStringAsync().Result;
17                 }
18             }

 1  {
 2                 var serviceCollection = new ServiceCollection();
 3                 serviceCollection.AddDataProtection();
 4                 var serviceProvider = serviceCollection.BuildServiceProvider();
 5                 var dataProtectionProvider = serviceProvider.GetRequiredService();
 6                
 7                 //下面是使用
 8                 var protector = dataProtectionProvider.CreateProtector("DataProtectionSample.Program");
 9                 string input = "ypf001";
10                 string protetedPayload = protector.Protect(input);
11                 string unprotectedPayload = protector.Unprotect(protetedPayload);
12 }

 1  public interface IUserService
 2  {
 3    string GetInfor();
 4  }
 5  public class UserService : IUserService
 6  {
 7    public string GetInfor()
 8    {
 9      return "ypf123";
10    }
11  }
12  {
13    var serviceCollection = new ServiceCollection();
14    serviceCollection.AddSingleton();
15    var serviceProvider = serviceCollection.BuildServiceProvider();
16    IUserService userService = serviceProvider.GetRequiredService();
17 
18    //下面是使用
19    var result = userService.GetInfor();
20 }

1  {
2      //注：配置文件要改成始终复制
3      var configurationBuilder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
4      var Configuration = configurationBuilder.Build();
5      //下面是使用
6      var data1 = Configuration["MyFullName"];
7  }