Unity [Dependency]属性无法解析

Question

我有以下代码,当我尝试运行它时,我可以看到BrokerProvider没有被解析.这是我的代码:

static void Main(string[] args)
        {
            IUnityContainer container = new UnityContainer();
            UnityConfigurationSection section = (UnityConfigurationSection) ConfigurationManager.GetSection("unity");
            section.Containers.Default.Configure(container);

            new TestBroker().RunTestBroker();              
        }


class TestBroker
    {
        private IBrokerProvider brokerProvider;

        public void RunTestBroker()
        {
            List<IPortfolio> portfolios = BrokerProvider.GetPortfolios();
        }

        [Dependency]
        public IBrokerProvider BrokerProvider
        {
            get { return brokerProvider; }
            set { brokerProvider = value; }
        }
    }

相关配置

 <unity>
    <typeAliases>
      <typeAlias alias="string" type="System.String, mscorlib" />
      <typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" />
      <typeAlias alias="IBrokerProvider" type="PA.Common.Interfaces.IBrokerProvider, PA.Common" />

      <typeAlias alias="PManager" type="PA.BrokerProviders.PManager, PA.BrokerProviders" />
    </typeAliases>
    <containers>
      <container>
        <types>
          <type type="IBrokerProvider" mapTo="PManager">
            <lifetime type="singleton" />
          </type>
        </types>
      </container>
    </containers>
  </unity>

另一个问题:我是否需要重复我在其他所有类中使用的相同的3行代码,我想使用统一或设置一次就足够了？

Answer 1

那是因为通过调用运算符直接创建TestBroker new:

new TestBroker().RunTestBroker();

为了统一来解决你的依赖关系,你需要像这样调用框架:

var broker = container.Resolve<TestBroker>();

IUnityContainer是将为您完成所有工作的接口 - 即将类型解析为实例.您只需要创建一次,然后只需将它传递到您需要它的应用程序.