autofac 循环依赖

 Autofac.Core.DependencyResolutionException: An exception was thrown while activating Prj.Service.ProRequirementService -> Prj.Service.PrjListService -> Prj.Service.PrjMemosService.

循环依赖问题处理方法：

方案一

调整代码结构，不允许出现循环依赖

方案二

加上

.PropertiesAutowired(PropertyWiringOptions.AllowCircularDependencies)

实测，为解决

方案三

使用Lazy

public class ClassA
{
    public string Name => "A";
    private readonly Lazy<ClassB> _b = null;
    public ClassA(Lazy<ClassB> b)
    {
        _b = b;
    }
    public void Execute()
    {
        Console.WriteLine(_b.Value.Name);
    }
}
public class ClassB
{
    public string Name => "B";
    private readonly Lazy<ClassA> _a = null;
    public ClassB(Lazy<ClassA> a)
    {
        _a = a;
    }
    public void Execute()
    {
        Console.WriteLine(_a.Value.Name);
    }
}

太麻烦，未测试