Question

对于依赖注入解析器技术主题，我是一种新知识。我可以知道如何通过配置文件部分来解决依赖性。下面是我的类和接口以及配置文件。

我确定缺少某些代码/设置。您能帮我吗？

public interface IUserAuthentication
{
    string Authenticate(string username, string password);
    string GetUserRole(string username);
}

public class CloudAppAuthetication : IUserAuthentication
{
    public string Authenticate(string username, string password)
    {
        //Jwt token based authentication logic should be there
        return "This Authenticate method executed from cloud class";
    }

    public string GetUserRole(string username)
    {
        //New logic to user management api call
        return "This GetUserRole method executed from cloud class";
    }
}

public class StandaloneAppAuthetication : IUserAuthentication
{
    public string Authenticate(string username, string password)
    {
        //current logic should be here
        return "This Authenticate method executed from standalone class";
    }

    public string GetUserRole(string username)
    {
        //current logic should be here
        return "This GetUserRole method executed from standalone class";
    }
}

控制台方法的控制台应用程序调用：

class Program
{
    static void Main(string[] args)
    {
        IUnityContainer container = new UnityContainer();
        container.LoadConfiguration("TestContainer");
        IUserAuthentication _userAuthentication = null;
        string validatedUser = _userAuthentication.Authenticate(
            "testuser@user.com", "testpassword");
        string validatedUserRole =
            _userAuthentication.GetUserRole("testuser@user.com");
    }
}

我的控制台应用程序的App.config文件是：

<?xml version="1.0" encoding="utf-8"?>
  <configuration>
    <configSections>
       <section name="unity"
  type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,
Microsoft.Practices.Unity.Configuration" />
    </configSections>
    <unity xmlns = "http://schemas.microsoft.com/practices/2010/unity" >
      < container name="TestContainer">
        <register
  type="UnityConfiguration_Testing.IUserAuthentication,UnityConfiguration_Testing"
  mapTo="UnityConfiguration_Testing.StandaloneAppAuthetication,UnityConfiguration_Testing"
        />
      </container>
    </unity>
  <startup>
    <supportedRuntime version = "v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
</configuration>

我正在将对象引用未设置为对象错误的实例。期望StandaloneAppAuthetication类方法将按照我的配置执行。

Answer 1

按照@qujck的建议，我进行了如下代码更改，效果很好。谢谢 qujck 。

using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace UnityConfiguration_Testing
{
    class Program
    {
        static void Main(string[] args)
        {
            IUnityContainer container = new UnityContainer();
            container.LoadConfiguration("TestContainer");
            var _userAuthentication = container.Resolve<IUserAuthentication>();
            string validatedUser = _userAuthentication.Authenticate("testuser@user.com", "testpassword");
            string validatedUserRole = _userAuthentication.GetUserRole("testuser@user.com");
        }
    }
}

无法解决配置文件设置的依赖性

1 个答案: