(精华)2020年7月2日 ASP.NET Core Castle实现服务注入和AOP(工具版)

实现服务注入和AOP需要安装如下包

Castle.Core.AsyncInterceptor

public void ConfigureServices(IServiceCollection services)
{
    #region 自动注入拥有ITransientDependency,IScopeDependency或ISingletonDependency的类
    services.AddFxServices();
    #endregion
}

private static readonly ProxyGenerator _generator = new ProxyGenerator();
/// 

/// 自动注入拥有ITransientDependency,IScopeDependency或ISingletonDependency的类
/// 
/// 服务集合
/// 
public static IServiceCollection AddFxServices(this IServiceCollection services)
{
    Dictionary<Type, ServiceLifetime> lifeTimeMap = new Dictionary<Type, ServiceLifetime>
    {
        { typeof(ITransientDependency), ServiceLifetime.Transient},
        { typeof(IScopedDependency),ServiceLifetime.Scoped},
        { typeof(ISingletonDependency),ServiceLifetime.Singleton}
    };
    //获取所有解决方案自定义类，aType为程序集所有类
    GlobalData.AllFxTypes.ForEach(aType =>
    {
        //aMap为生命周期接口
        lifeTimeMap.ToList().ForEach(aMap =>
        {
            //ITransientDependency,IScopeDependency或ISingletonDependency
            var theDependency = aMap.Key;
            //IsAssignableFrom判断是否相同或是另一个类的超类或接口，不等于aType类，aType不是抽象类，aType是类
            if (theDependency.IsAssignableFrom(aType) && theDependency != aType && !aType.IsAbstract && aType.IsClass)
            {
                //注入实现ServiceDescriptor（服务的类型，用于创建服务实现的新实例的工厂/实现的类型，服务的生存期）的类
                services.Add(new ServiceDescriptor(aType, aType, aMap.Value));
                //获取所有解决方案自定义类，aType为程序集所有接口，接口不等于生命周期接口
                var interfaces = GlobalData.AllFxTypes.Where(x => x.IsAssignableFrom(aType) && x.IsInterface && x != theDependency).ToList();
                //有接口则注入接口
                if (interfaces.Count > 0)
                {
                    interfaces.ForEach(aInterface =>
                    {
                        //注入AOP
                        services.Add(new ServiceDescriptor(aInterface, serviceProvider =>
                        {
                            CastleInterceptor castleInterceptor = new CastleInterceptor(serviceProvider);
                            //Castle的动态代理实现服务注入和AOP
                            return _generator.CreateInterfaceProxyWithTarget(aInterface, serviceProvider.GetService(aType), castleInterceptor);
                        }, aMap.Value));
                    });
                }
                //无接口则注入自己
                else
                {
                    services.Add(new ServiceDescriptor(aType, aType, aMap.Value));
                }
            }
        });
    });

    return services;
}

在服务层中的使用如下：特性必须是继承BaseAOPAttribute

[DataAddLog(UserLogType.系统用户管理, "RealName", "用户")]//操作日志
[DataRepeatValidate(
    new string[] { "UserName" },
    new string[] { "用户名" })]//校验用户
[Transactional]//多操作提供的事务特性
public async Task AddDataAsync(UserEditInputDTO input)
{
    await InsertAsync(_mapper.Map<Base_User>(input));
    await SetUserRoleAsync(input.Id, input.RoleIdList);
}

具体的其他相关类请移到类库中去查找本人博客都有