HttpContext

获取httpContext

只能是API接口，不能是定是定时任务，定时任务是没有httpContext的

//ioc获取
public Class1(IHttpContextAccessor accessor) 
{
   this.httpContext=accessor.HttpContext
}

//方法中获取
var httpContext = DependencyResolver.GetService<IHttpContextAccessor>().HttpContext;

//根据上下文对象获取IOC对象
var class2=DependencyResolver.GetHttpContextRequiredService<Class2>();