public EmployeesTaskController(IEmployeeRepository employeeRepository, IMapper mapper, IEmployeeTaskRepository employeeTaskRepository, IPropertyMappingServiceForTask propertyMappingServiceForTask)
{
_mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
_employeeRepository = employeeRepository ?? throw new ArgumentNullException(nameof(employeeRepository));
_employeeTaskRepository = employeeTaskRepository ?? throw new ArgumentNullException(nameof(employeeTaskRepository));
_propertyMappingServiceForTask = propertyMappingServiceForTask ?? throw new ArgumentNullException(nameof(propertyMappingServiceForTask));
}
//再次犯错，这里必须要注入接口类型propertyMappingServiceForTask，容器里必须是接口类型或者抽象服务类
public EmployeeTaskRepository(Restful_DbContext context, IPropertyMappingServiceForTask propertyMappingServiceForTask)
{
_context = context ?? throw new ArgumentNullException(nameof(context));
_propertyMappingServiceForTask = propertyMappingServiceForTask ?? throw new ArgumentNullException(nameof(propertyMappingServiceForTask));
}
